HEEEEELPPPPP PLZZZZZZ How many liters of water would you need to add to 4.36 moles of NaCl to create a 1.3 M solution?

Answers

Answer 1

Answer:

4.67 moles of Li2SO3 dissolved to make 2.04 liters of solution. 4.67 mol ... water. In the second solution, I use 1.0 mole of salt to make a 1.0 L solution. Do the two ... How many milliliters are needed to make. 100.0 mL of ... 4. If I add 25 mL of water to 125 mL of a 0.15 M Naoh solution, what will the molarity of the diluted ...

Explanation:

Related Questions

What is energy measured in

Answers

Answer:

The unit of energy you measure in is joule.

3. The mass percent of nitrogen in NH4Cl is *
O 16.7% nitrogen
0 25.0% nitrogen
0 26.2% nitrogen
O none of these

Answers

Answer:

None of these

Explanation:

The mass percent is 35.4% (3 s.f.)

14/4+35.5 = 14/39.5 x 100 = 35.4 (3 s.f.)

The United States has landed a device on Mars.

Answers

Answer:

They landed a Rover!

Explanation:

Isn't that Awesome!?!

Help plz 10 pointsss———-

Answers

first would be homeostasis, second is a wolf panting after chasing

Answer:

the first question is homeostasis. and the second question is the wolf panting

Explanation:

let me know if u need an explanation n ill try to give one :)

How many grams of oxygen, O 2 , is consumed when 41.9 g of propane, C 3 H 8 , burns?

Answers

Answer:

152.4 g of O₂ are consumed.

Explanation:

We start from the combustion reaction:

C₃H₈ + 5O₂ → 3CO₂ + 4H₂O

We convert the mass of propane to moles:

41.9 g . 1mol /44g = 0.952 moles

Ratio is 1:5. 1 mol of propane consumes 5 moles of oxygen at propane combustion

Then, 0.952 moles may consume (0.952 . 5) /1 = 4.76 moles.

We convert moles to mass → 4.76 mol . 32g/mol = 152.4 g

. Chalk is made of CaCO 3 . How many molecules are in 5 grams of chalk?

Answers

Answer:

20.02 grams of chalk.

Explanation:

which situation best represents convection

Answers

Answer:

A hot air balloon taking off

Explanation:

Is specific heat capacity always equal to heat capacity?

Answers

Answer:

No specific heat capacity and heat capacity are not equal

helllllppppppp pleaseeeeeee

Answers

Just look it up :) hope this helps

which contain more heat a cup of coffee or a glass of iced tea? thank you

Answers

Answer:

Relationship between heat and temperature

The water molecules in a cup of hot coffee have a higher average kinetic energy than the water molecules in a cup of iced tea, which also means they are moving at a higher velocity.

name two examples which are not considered as matter

Answers

Answer:

Light and Sound can be considered as non-matter.

Explanation:

Various forms of Energy like Heat, Sound, Light can be considered as non-matter

is the distilled water/acidic/basic/netural?

Answers

Distilled water is neutral, because the H+ and OH- ions are balanced. Litmus is a natural acid-base indicator extracted from a type of lichen.

Distilled Water Has A Neutral pH, Which Means It Is Neither Acidic Nor Basic. Therefore, It's Neutral.

Except for the noble gases, most non-metals become anions.

True
False

Answers

It’sssss trueeee!!!!

PLEASE HELP ME!!!

A 38.8g piece of metal alloy absorbs 181J as its temperature increases from 25.0°C to 36.0°C°. What is the alloy's specific heat? Show your work.

Answers

Answer:

0.424 J/g °C

General Formulas and Concepts:

Math

Pre-Algebra

Order of Operations: BPEMDAS

Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to Right

Equality Properties

Multiplication Property of Equality Division Property of Equality Addition Property of Equality Subtraction Property of Equality

Chemistry

Thermochemistry

Specific Heat Formula: q = mcΔT

q is heat (in Joules)m is mass (in grams)c is specific heat (in J/g °C)ΔT is change in temperatureExplanation:

Step 1: Define

[Given] m = 38.8 g

[Given] q = 181 J

[Given] ΔT = 36.0 °C - 25.0 °C = 11.0 °C

[Solve] c

Step 2: Solve for Specific Heat

Substitute in variables [Specific Heat Formula]: 181 J = (38.8 g)c(11.0 °C)Multiply: 181 J = (426.8 g °C)c[Division Property of Equality] Isolate c: 0.424086 J/g °C = cRewrite: c = 0.424086 J/g °C

Step 3: Check

Follow sig fig rules and round. We are given 3 sig figs.

0.424086 J/g °C ≈ 0.424 J/g °C

A 20.0 mL of 0.27 M solution of the salt NaA has a pH of 8.70.

a) Calculate the pk, value of the acid HA.

(Correct to 3 sig. fig)

b) Calculate the pH of a solution containing 0.3 M HA and 0.1 M NaA.

(Correct to 3 sig. fig)

Answers

Answer:

a) 3.969

b) 3.489

Explanation:

a) Calculate the pk, value of the acid HA

PH of salt hydrolysis

P[tex]^{H}[/tex] = 1/2 ( pkw + pka + logC )

8.7 * 2 = 14 + log ( 0.27 ) + Pka

∴ Pka = 3.9686 ≈ 3.969

b) Calculate the PH of a solution containing 0.3 M HA and 0.1 M NaA

PH = Pka + log ( salt / acid )

= 3.9686 + log ( 0.1 / 0.3 )

= 3.9686 - 0.48 = 3.489

What is needed for our cells to get energy from our food?

Answers

Answer:

cellular respiration is needed for our cells to get energy from our food.

Explanation:

Through the process of cellular respiration, the energy in food is converted into energy that can be used by the body's cells. During cellular respiration, glucose and oxygen are converted into carbon dioxide and water, and the energy is transferred to ATP.

The phenomenon that allows water to travel against gravity through thin openings (for
example, to the top of trees) is called:

Answers

Answer:

El motor que las permite vencer la gravedad es la evaporación del agua que tiene lugar en las hojas.

Explanation:

label the parts of the wave

Answers

first one would be amplitude second one up would be crest third one down would be the trough last one left is the wave length

true or false: covalent compounds are formed when two nonmetals share valance electrons

Answers

Answer:

true

Explanation:

H2O : 2 covalent bonds are established between O atom and 2 H atom (H--O--H) by mutual shearing of their valence electrons.

help, please ( rando words )

Answers

Answer:

ionic

Explanation:

Answer:

the answer is ionic

Explanation:

hope this helps!

please can i also have brainliest too?

One step in the production of copper is to heat copper (I) sulfide, Cu2S, with oxygen. This
produces copper (I) oxide and sulfur dioxide gas according to the following reaction:

2Cu2S(s)
+ 3O2(g)
→ 2Cu2O(s)

+ 2SO2(g)

What is the greatest mass of SO2 that can be produced from 15.0 mol Cu2S?

Answers

Answer:

9.61 x 10^2 g SO2

Explanation:

Ur welcome

Help please if link will report

Answers

All i know is the first one is electromagnet, the second one is attraction, the third is magnetism, the fourth is magnetize, the fifth is repulsion, the sixth is lines of force, the seventh is magnetic pole, the eighth is electromagnetism, the ninth is magnetic field, and the tenth is permanent magnet

is Tungsten carbide an elementary substance
or compound?

Answers

Answer:

Tungsten carbide (chemical formula: WC) is a chemical compound (specifically, a carbide) containing equal parts of tungsten and carbon atoms.

Answer:compound

Explanation:

Two tons of water is pumped into a tank 15 ft. High in 5 minutes. Determine the power output of the pump. (Note: One ton is equal to 2,000 lb. And remember to convert the minutes to seconds.)

Answers

Answer:

200 lb•ft/s

Explanation:

From the question given above, the following data were obtained:

Force (F) = 2 tons

Time (t) = 5 mins

Height (h) = 15 ft

Power (P) =?

Next, we shall convert 2 tons to pound. This can be obtained as follow:

1 ton = 2000 lb

Therefore,

2 tons = 2 × 2000

2 tons = 4000 lb

Next, we shall convert 5 mins to seconds. This can be obtained as follow:

1 min = 60 s

Therefore,

5 mins = 5 × 60

5 mins = 300 s

Finally, we shall determine the power of the pump. This can be obtained as follow:

Force (F) = 4000 lb

Time (t) = 300 s

Height (h) = 15 ft

Power (P) =?

P = F × h / t

P = 4000 × 15 / 300

P = 60000 / 300

P = 200 lb•ft/s

Thus, the power of the pump is 200 lb•ft/s

Answer:

It's 200 ft-lb/sec

Explanation:

I did it before!

A sample of hydrogen changes its pressure from 756 torr to 499 torr while the temperature remains constant. After the pressure is reduced, the volume of the gas is 789 mL. What was the original volume?

Answers

P1 = 756 torr

P2 = 499 torr

V2 = 789 mL

V1 = ?

applying Boyle's Law

P1 * V1 = P2 * V2

756 torr * V1 = 499 torr * 789 mL

V1 = 499 torr * 789 mL / 756 torr

V1 = 520.78 mL

Question 7 (1 point
What is the general pattern seen in the periodic table that helps a person quickly identify if an element is a nonmetal? (Where are nonmetals
generally found on the periodic table?)

Answers

Answer:

the elements to the right including hydrogen

Explanation:

as you know non-metal tend to gain eletrons

basically group 5, 6, and 7 are nonmetals

group 1, 2, and 3 are metals and group 4 are transitional metals so be careful with group 4

Well, the simple is that metals will be located on the left side of the periodic table and non metals will be located on the right side. But, what you can do is whatever elements is located on the LEFT side of the STAIRCASE (where the metalloids are) are considered METALS and the elements to the RIGHT of the staircase are NONMETALS and the elements that are touching the staircase are metalloids. Also Hydrogen is a NONMETAL, yes it’s located to the left BUT it’s a no metals because it has the properties/requirements of a nonmetal. Another element I’ll like to mention is Aluminum. Aluminum is touching the staircase BUT it is not a metalloid. It is a metal.

Bronsted Lowry reactions can use hydroxide ions.
True
False

Answers

Answer:

Explanation:

Looking at page 14 of the earth science tables, how does the temperature change as a balloon rises through the Troposphere Stratosphere and Mesosphere?

Increase, decreases, increases again

Decreases, increases, decreases again

Increases

Decreases

Answers

Answer:

Decreases

Explanation:

The temperature decreases when latitude increases.

How can an unbalanced force affect an object?
O Unbalanced forces keep an object at rest.
Unbalanced forces cause objects to accelerate.
O Unbalanced forces cannot affect on object.

Answers

Unbalanced forces cause objects to accelerate. This is respecting Newton’s 1st law of motion.

Which property of sulphuric acid makes it suitable to use as a catalyst for the preparation of esters?

Answers

In Fisher esterification, sulfuric acid is used as a catalyst and its function is to convert the carboxylic compound in its conjugate acid. This favours the nucleophilic attack of the alcohol. To act as a catalyst you need a strong acid, therefore sulphuric acid is suitable for this kind of reaction.

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The tests and ovaries are structures in which of the following two body systems?A. Reproductive and Muscular B. Reproductive and EndocrineC. Reproductive and NervousD. Endocrine and Nervous How might the meaning of this sentence apply to Charlies life in Flowers for Algernon?Include evidence from both texts to support your answer. Plz help me well mark brainliest if correct Find the missing dataA) 41B) 42OC) 44OD 53 Determine if the triangles are similar. If they are similar state why they are similar andcomplete the similarity statement. If the triangles are not similar, select "N/A" for the lasttwo dropdowns.RQ1114UV2228S[ Select)The triangles arevby[ Select].SUV-A [Select] How many grams are in 2.4mol sulfur, S?A.)77gB.)6.2x10^2gC.) 0.075g Consider a students work in determining the solution set of x > 2(y 1)^2 2.Test point: (2.25, 1.25)x > 2(y 1)^2 22.25 > 2(1.25 1)^2 22.25 > 2(0.25)^2 22.25 > 2(0.0625) 22.25 > 0.125 22.25 > 1.875Conclusion: The point (2.25, 1.25) satisfies the given inequality.Solution set:Which element, if any, shows an error in the students work? There are no errors.The conclusion statement is incorrect.The graph of the solution set is incorrect.The substitution of x and y values is incorrect. dicuss the results of global warming Two other criteria that are required in order to be considered for bachelor's degree The expression on the left side of an equation is shown below.3 x + 9 = boxIf the equation has no solution, which expression can be written in the box on the other side of the equation? Help me with number 2 and Ill mark you brainliest please! In a bowl there are 15 candy bars.6 are Snickers5 are Kit KatThe rest of the candy bars are Milky WaysIf you eat a candy bar and then choose another candy bar, what is the probability that the first bar will be a Snickers and the second will be a Milky Way? 8)3 cm3 cm2 cm2 cm6 cm9 cmFind the area of the figure.1)A)96 cm2B)110 cm2120 cm?D150 cm2 In XYZ, z = 49 inches, X=9 and Y=108. Find the area of XYZ, to the nearest square inch. Answer this correctly and explain your answer Ill give you brainalist + 10 points What a pity that the sun ________ in the sea in Varna. 1isn't settingnot setdont setdoesn't set What is the value of letter D on the number line? Three and seventy-five hundredthsThree and two tenthsThree and twenty-five hundredthsThree and three tenths Read the excerpt from Roll of Thunder, Hear My Cry.For a long moment no one moved or said a word as Mr. Barnett shone the light directly on T.J., then on R.W. and Melvin, their faces darkened by the stockings. But when Mr. Barnett saw the cabinet lock busted, he flew into frenzied action, hopping madly down the stairs and trying to grab the metal box from Melvin. They struggled, with Mr. Barnett getting the better of Melvin, until R.W. whopped Mr. Barnett solidly on the head from behind with the flat of the axe, and Mr. Barnett slumped into a heap upon the floor as if dead.Which detail in the excerpt best helps the reader determine the frantic tone?For a long moment no one moved or said a wordhe flew into frenzied action, hopping madly down the stairsMr. Barnett slumped into a heap upon the floor as if deadtheir faces darkened by the Give 4 sentences why reading is important. Ill mark brainless who does it.... What is x when y = 100?A.about 21B.about 19C.about 13D.about 5 what is the median of these numbers