Can someone answer question 3 ASAP please

Can Someone Answer Question 3 ASAP Please

Answers

Answer 1

Answer:

Molecules must collide with sufficient energy, known as the activation energy, so that chemical bonds can break. Molecules must collide with the proper orientation. A collision that meets these two criteria, and that results in a chemical reaction, is known as a successful collision or an effective collision.


Related Questions

B 1. What type of signal is represented by discrete values?
A analog
B continuous
C sine wave
D digital​

Answers

Answer:

digital signal is the answer

PLEASE ANSWER QUICKLY!! LOTS OF POINTS!❤

Phosphorous has two common isotopes, phosphorous - 30 and phosphorous - 31. Using the periodic table what can you infer about these two isotopes?​

Answers

Explanation:

The idea here is that you need to use the Periodic Table of elements to find the mass number of the most common isotope of phosphorus, P.

You decide to race your buddy after school. The race starts at the 10 yard line and ends at the 50 yard line. How long was the race

Answers

Answer:

Long of the race = 40 yard

Explanation:

The long of the race is measured from the distance in the beginning (10 yard line) to the distance and the end of the race (50 yard line). The distance of the race is the difference between both lines. That is:

Long of the race = 50 yard - 10 yard

Long of the race = 40 yard

A boy inherited genes that would ordinarily allow him to grow tall.his growth is stunted as a result of poor nutrition.this is an example of

Answers

It is an example of how the boys environment affected him, making him an outlier to what should typically happen. Hope this helps!

High levels and long periods of stress can increase a person’s risk for many diseases.

True

False

Answers

Answer:

true

Explanation:

You have 1.29 moles of hydrogen peroxide, H2O2. How many grams is this?

Answers

Answer:

m = 43.87 grams

Explanation:

Given that,

Number of moles, n = 1.29 moles

The molar mass of H₂O₂ is, M = 34.0147 g/mol

We know that,

[tex]n=\dfrac{m}{M}[/tex]

Where

m is mass of H₂O₂

So,

[tex]m=n\times M\\\\m=1.29\times 34.0147 \\\\m=43.87\ g[/tex]

So, there are 43.87 grams of H₂O₂.

Gas particles that are at low temperature and high pressure and are close to changing phases are considered:
a)Real Gases

b)Ideal Gases

c)Both Ideal and Real Gases

Answers

Answer is a ........

The reaction is run at two temperatures where temperature 1 is lower than temperature 2. Which relationship is correct for either rate constant (k1 or k2) or activation energy (Ea,1 and Ea,2)

Answers

Answer:

The answer is "[tex]K_1 < K_2[/tex]"

Explanation:

In the given question, the value of the [tex]K=Ae^{-\frac{Ea}{RT}}[/tex] and the [tex]T_1 <T_2[/tex]is the rate value which is the constant that is  [tex]K_2>K_1[/tex]. As per the temperature value when its increase rate is constantly increasing. [tex]E_a[/tex] is activation energy it is not dependent on the temperature that why the answer is [tex]K_1 < K_2[/tex].


If a .05 gram pill of aspirin is dissolved into 50 grams of water, what is the
percent by mass concentration of aspirin in water?

Answers

Answer:

0.10 % w/w

Explanation:

The percent by mass (%w/w) is defined as one hundred times the ratio between the mass of solute (In this case aspirin, 0.05g) and the mass of solution (Mass solute + mass of water = 0.05g + 50g = 50.05g). The percent by mass is:

0.05g Aspirin / 50.05g * 100 =

0.10 % w/w

Global average temperature increases when energy absorbed by the surface ___?
increases
decreases
remains the same

Answers

Answer:

Increases

Explanation:

The main reason of increase earth's temperature is the increase of CO2 gas in the air which causes global warming and the ice burgs in the poles are getting melted and it results in the increase of the sea water level.

This is the main our problem in the future.

An airplane starts at rest and accelerates down the runway for 20 sec. at the end of the runway, its velocity is 80m/sec. What is its acceleration?

Answers

Answer:

The correct answer is - 4 m/s

Explanation:

Given:

time = 20 sec

velocity= 80 m/s

Accelaration = ?

Solution:

formula for the accelaration can be drive from the for

vi = vf + ( a.t)

0 m/s (rest) = 80 m/s + (a.20s.-1)

a.20.-1= -80,

we check if this is true;

0 m/s= 80 + -80 = 0 so its true.

so a.20.-1= -80,

a= 80/20 ,

Thus, the correct answers a = 4 m/s

What is scientific method? a. A plane for forming a scientific hypothesis. b. A technique for carrying out a scientific explement c. A formula for analyzing scientific data d. An organized way to test scientific ideas

Answers

Answer:

d. An organized way to test scientific ideas

Explanation:

Science can be defined as a branch of intellectual and practical study which systematically observe a body of fact in relation to the structure and behavior of non-living and living organisms (animals, plants and humans) in the natural world through experiments.

An experiment can be defined as an investigation which typically involves the process of manipulating an independent variable (the cause) in order to be able to determine or measure the dependent variable (the effect).

This ultimately implies that, an experiment can be used by scientists to show or demonstrate how a condition causes or gives rise to another i.e cause and effect, influence, behavior, etc in a sample.

A scientific method can be defined as a research method that typically involves the use of experimental and mathematical techniques which comprises of a series of steps such as systematic observation, measurement, and analysis to formulate, test and modify a hypothesis.

A hypothesis is considered to be tentative or an educated guess and can be defined as a testable explanation for an observation or a scientific problem. An example of a hypothesis is saying, Corona virus is caused by the introduction of the "5G" technology.

Thus, for any hypothesis to be true and acceptable in science, it must be supported by observations and the results of control experiments; this give rise to factual informations, theories and by extension solutions to problems.

In conclusion, we can deduce from the aforementioned paragraphs that a scientific method is simply an organized way to test scientific ideas and hypothesis.

What is the pH of a solution with a 3.2 x 10-5 M hydronium ion concentration? (5 points)
4.3
11
4.5
12.

Answers

Answer: 4.5

Explanation: Got it right on the exam. Hope this helps!

Please help me. I am doing a test and, I don’t know this one.

Answers

Answer: 22

Explanation:

The compound consists of 40.1% carbon, 6.6% hydrogen and 53.3% oxygen. Its relative density with respect to hydrogen is -15. What is the formula of the compound?

Answers

Answer:

https://socratic.org/answers/220339

this is the answer , my grandpa create this page

Explanation:

A 600-ml solution of alcohol contains 350 mL of water. What
is the mass percent of alcohol?
answer options:
41.7 % alcohol solution
71.4 % alcohol solution
2.5 % alcohol solution
40% alcohol solution

Answers

41.7% alcohol solution because you should find out that it is about 58% water because 350/600. Then you should know that 250/600 is alcohol

Why is copper a popular mineral? Is it in danger of depletion? Use details to support your answer.

Answers

Answer:

yes it is a danger.Copper doesn't break down in the environment, leading to its accumulation in plants and animals. Absorption of some copper into the body is essential for human health. Acute industrial exposure to copper fumes, dusts or mists can result in chronic copper poisoning.Copper is a mineral and an element essential to our everyday lives. It is a major industrial metal because of its high ductility, malleability, thermal and electrical conductivity and resistance to corrosion. It is an essential nutrient in our daily diet.

Can the excess reactant control the percentage yield

Answers

No it cant not reactant control

Why does breaking up a solid reactant increase the rate of reaction?

Question 2 options:

a)

it creates more solid


b)

it increases the concentration


c)

it increases the surface area


d)

it creates more energy

Answers

Answer:

B...

Explanation:

sorry if i got it wrong, mines was right..

Balance this chemical equation

Ca(OH)2 + HCl ---> CaCl2 + H2O​

Answers

Answer:

The balance equation of Ca(OH)2 + HCl ---> CaCl2 + H2O​

is

Ca(OH)2(s) + 2HCl(aq) ---> CaCl2(aq) +2H2O​ (l) (balanced equation)

list the universities of nepal and explain about one of them.​

Answers

Answer:

Tribhuvan University is a university in Tribhuvan, Nepal. Tribhuvan University (TU) is a pioneering higher education institution in Nepal, having been founded in 1959. ......

Pokhara University... Kathmandu University...

Purbanchal University is located in Purbanchal, India.

Lumbini Bauddha University (LBU) is a university in Lumbini, Nepal...

Nepal Sanskrit University is a university dedicated to the study of Sanskrit in Nepal.

Midwestern University is a public university in the Midwest...

Nepal Open University is a public university in Nepal.

Explanation:

how many moles are in 456 g of CaCO3

Answers

Answer:

4.556 moles

Explanation:

mole=mass/ molar mass

mole= 456/100.08

mole= 4.556

Does anyone have the chemistry paper 1 higher 2019 mark scheme thank you

Answers

no

Explanation:

i simply answered the question

you didnt ask for it you simply asked if i had it

being mad is no use, same with reporting and taking this down

in thoery my answer is correct

so, dont get mad, dot report, dont take this down

this is my protest

Help please ! ASAP neeeeeed and answerrrrrr

Answers

Answer:

The answer is D

Explanation:

Answer:

A. Heater will only become warm when switch is closed.

Explanation:

Switches are used to control the flow of electrons (basically electricity). If you look at the other trials, you see that when switch is open, the bulb or fan does not run cuz no electricity can get to them. But when switch is closed, electricity gets to them. Thus, they will experience similar thing with the heater I assume cuz they have not said anything about battery voltage or anything preventing heater from heating.

2Na + 2H2O --> 2NaOH + H2 How many moles of NaOH can be produced from 7.0 moles of Na Find theoretical yield in moles PLSS HELP ME SOMEBODY 3

Answers

Answer:

[tex]n_{NaOH}=7.0molNaOH[/tex]

Explanation:

Hello there!

In this case, according to the given information about this problem, we first consider the given chemical reaction:

2Na + 2H2O --> 2NaOH + H2

Whereas there is 2:2 mole ratio of NaOH to Na; thus, we calculate the required theoretical yield of NaOH in moles as shown below:

[tex]n_{NaOH}=7.0molNa*\frac{2molNaOH}{2molNa} \\\\n_{NaOH}=7.0molNaOH[/tex]

Regards!

Can someone help me with this?

Answers

yeah so you have to start of with converting your first two values into moles (forget the third one)

97.5 g NO * 1 mol/30.01 g NO = 3.25 moles NO

88.0 g O2 * 1 mol/16.00 g O2 = 5.5 moles O2

now we can find the limiting reactant by checking for the amount of product each reactant should give us by using molar ratios

3.25 mol NO * 2 mol NO2/2 mol NO = 3.25 mol NO2

5.5 mol O2 * 2 mol NO2/ 1 mol O2 = 11

so NO is the limiting reactant since it produces less product/gets used up quicker

3.25 mol NO * 2 mol NO2/2molNO = 3.25 mol NO2

so this is our theoretical yield and the question provides us with the actual yield (2.68 moles). since the actual yield is given in moles, we don't have to convert to grams. our percent yield formula goes like: actual yield/theoretical yield * 100

2.68 mol/3.25 mol * 100 = 82.46%

1. Which of the following factors does not affect the voltage produced in a voltaic cell?

A. concentrations of lons

B. pressure

C. metal of the electrodes

Answers

It will be B cause pressure doesn’t do anything

The voltage is the potential difference between the two ends of the conductor. The factor that does not affect the voltage produced in a voltaic cell is pressure. The correct option is B.

What is a Voltaic cell?

A voltaic cell uses a chemical reaction to convert electrochemical energy to electrical energy. It consists of cathode and ions which flow through the cathode and anode.

The pressure has nothing to do with the Electrochemical devices.

The factor does not influence the voltage produced in a voltaic cell is pressure. The correct option is B.

Learn more about Voltaic cell.

https://brainly.com/question/1370699

#SPJ2

Acid-base neutralization means having a pH of 7. true or false ?

Answers

Answer:

True

Explanation:

A pH of 7 is greater than basic but lesser than acidic. Therefore, it's neutral

True, When a strong acid is neutralized by a strong base there are no excess hydrogen ions left in the solution.

A student places three ice cubes in a beaker and allows them to partially melt. If she measures the temperature of the water in the beaker, what will she most likely observe? Explain your answer.

Answers

Answers to the whole assignment:

**Check for proof photos at the bottom.**

**Answers are in bold.**

__________________________________________________________

A student places three ice cubes in a beaker and allows them to partially melt. If she measures the temperature of the water in the beaker, what will she most likely observe? Explain your answer.

She will see that the temperature of the water is 0 degrees Celsius and it stays at that temperature until all the ice cubes completely melt.

__________________________________________________________

Use the table on the right to calculate each required quantity. Record values to 3 significant digits.

First answer: 35.8 kJ

Second answer: 871 g

Third answer: Fe

__________________________________________________________

An iron sphere with a mass of 75.00 g is heated to a temperature of 385.0°C. It is then placed in a beaker containing 150.0 g H2O at 100.0°C.

First answer: 339 kJ

Second answer: 9.02  kJ

Third answer: No

__________________________________________________________

A sample of water has a mass of 100.0 g. Calculate the amount of heat required to change the sample from ice at –45.00°C to water vapor at 175.0°C. Relevant constant values are given to the right.

First answer: 325  kJ

Second answer: boiling the water

__________________________________________________________

Identify the correct description for each part labeled on the diagram.  

A: ✔ heating solid

B: ✔ melting

C: ✔ heating liquid

D: ✔ boiling

E: ✔ heating gas

F: ✔ melting point

G: ✔ boiling point

Where are the particles closest together?

✔ A

Explanation:

When ice partially melts, the surrounding water remains at 0° Celsius. This is because ice melting only involves the water molecules overcoming intermolecular forces, or forces holding molecules together. The water molecules themselves aren't increasing in kinetic energy when turning into liquid. Since temperature measures kinetic energy, the temperature in this case, remains at 0°.

To find how much energy it takes to cause a phase change in a substance, you must find the number of moles, and determine whether to use ΔHvap and ΔHfus. ΔHvap is used to show how much energy is involved in evaporation and condensation, and ΔHfus is the same but used for melting and freezing. To find number of moles of a given substance, use the formula: mass of given substance divided by atomic mass. Both numbers have to use the same mass unit. Then, multiply number of moles by ΔHvap or ΔHfus to get kJ.

In a heating curve graph, the flat lines represent no change in energy, or the phase changes. The steep lines are change in energy, which are either heating or cooling. The bottom line is a heating/cooling solid. A heating/cooling solid is the coldest phase, which is why the line is at the bottom.

Here are photos of Edge to make things easier.

You have 11.27 moles of Cl2 gas. How many moles of NaBr do you need to completely undergo this reaction?

Answers

Answer:

22.54 moles of NaBr are needed

Explanation:

The reaction of Cl2 with NaBr occurs as follows:

Cl2 + 2NaBr → 2NaCl + Br2

Where 1 mole of Cl2 requires 2 moles of NaBr for a complete reaction

As in the problem, we have 11.27 moles of Cl2, the moles of NaBr required are:

11.27mol Cl2 * (2mol NaBr / 1mol Br2) =

22.54 moles of NaBr are needed
Other Questions
Please write a story about a moment or a time that you try something new for the first time this year( 3 paragraphs plz) Ill make you brain list Find the 8th term of the geometric sequence 7, 28, 112, ... In what ways might life for workers change as a result of the Industrial Revolution? Civilizations in the Americas 17.8.1: Writing a recursive math function. Write code to complete raise_to_power(). Note: This example is for practicing recursion; a non-recursive function, or using the built-in function math.pow(), would be more common. Unger has the following third party and intersegment revenue for its 10 operating segments Third party revenue $5,000,000 Intersegment revenue $1,000,000 Unger must disclose enough segments so that: a. The sum of the intersegment revenues of the disclosed segments exceeds $3,750,000. b. The sum of the third party revenues of the disclosed segments exceeds $3,750,000 c. The sum of the third party and intersegment revenues of the disclosed segments exceeds $4,500,000 d. The sum of the third party and intersegment revenues of the disclosed segments exceeds $3,750,000 e. The sum of the third party revenues of the disclosed segments exceeds $4,500,000 Find the Surface Area of this Prism Trying to find the surface area and can not get the answer. QUESTION FROM CHAPTER 3How does Nya describe the pond? In long walk to water According to the graph, what is the value of the constant in the equation below?(0.5, 1) (2,4) (3,6) (5, 10)A. 1B. 2C. 0.5D. 5 How long did the Tulsa Race Massacre last? Tim has been brainstorming ideas, getting ready to write a paper about his best friend, Gerardo.If Tim wants his readers to understand what makes Gerardo unique, which idea should Tim be sure to include in his paper?1. Gerardo speaks three languages.2.Gerardo attends the same school as Tim.3. Gerardo and Tim have been friends for years.4. Gerardo and Tim are both 5 foot 4 inches tall. Write the equation of the line in fully simplified slope-intercept form. if u can answer this that would rlly help:) PLS HELP During which phase of meiosis does crossing over occur?A. InterphaseB. Prophase 1 C. Metaphase 1 D. Anaphase 1E. Telophase 1 f(x)=x. What is g(x)? A. g(x) = 2x B. g(x) = (x) C. g(x) = (4x) D. g(x) = (2x) Question 4(Multiple Choice Worth 4 points)(LC)Which of the following words does not suggest an intense tone?DangerousO LostO Last timeO Available select the equivalent expression PLEASE HELP WILL MARK BRAINLIEST Help me !! PlzzzzzConsider the sets:K = {1, 2, 3, 4, 5)L = {1,4,5,7}List the elements in Kand L.A)6B) 9C){1,4,5)D) {1,2,3,4,5,7) Describe wildfires. How is climate change impacting wildfires ?