Answers
Answer:
Nice! If only....
Explanation:
Answer:
omg lol what even is this
Related Questions
The murder weapon weighs 150 grams. The initial temperature of the weapon before being tested was 100 oC. After placing the weapon in the water, the temperature dropped to 25.13 oC. Find the specific heat capacity of the unknown metal by first calculating the heat energy gained by the water.
Water
Mass = 2500 g
Initial temperature = 25 o C Final temperature = 25.13 oC
Equations
q = m C p Δ T C p = q / (mΔT)
1. How much heat energy (q) did the water gain?
2. What is the specific heat capacity (C p) of the unknown metal?
3. Compare the heat capacity you calculated with the one below, which one matches?
Specific heat capacity of metal (J / g or C)
Silver 0.235
Gold 0.129 Lead 0.121
Copper
4. What metal was the murder weapon made of?
0.385
Answers
1. heat gained : 1358.5 J
2. Cp metal = 0.121 J/g C
3/4 The metal = Lead
Further explanationThe law of conservation of energy can be applied to heat changes, i.e. the heat received/absorbed is the same as the heat released
Q in = Q out
Heat can be calculated using the formula:
Q = mc∆T
Q water(gained) = Q metal (lost)
1. Heat of water gained
[tex]\tt Q=2500\times 4.18\times (25.13-25)=1358.5~J[/tex]
2. The specific heat capacity (C p) of the unknown metal :
[tex]\tt Cp=\dfrac{1358.5}{150\times (100-25.13)}=0.121~J/g^oC[/tex]
does SiF4 have polar covalent bonds?
Answers
Answer:
SiF4 is not a polar covalent bond.
Explanation:
SiF4 is a nonpolar molecule because the fluorine's are arranged around the central silicon atom in a tetrahedral molecule with all of the regions of negative charge cancelling each other out.
I NEED ANSWER ASAP Which of the following statements is true for a scientific theory? It is a well-tested hypothesis. It is verified by only one scientist. It is based on only one experiment. It is investigated over a short period.
Answers
Answer:
A.) It is a well-tested hypothesis.
Answer:
Its is a well-tested hypothesis
Explanation:
i took the test
When glucose is totally oxidized to CO2 and H2O, how many ATP molecules are made by oxidative phosphorylation out of a maximum yield of how many ATP molecules?
Answers
Answer: 26 out of 30.
Explanation:
Out of 30 ATP molecules, 26 are produced from maximum oxidative phosphorylation production. Two more come from glycolysis and two more are from the citric acid cycle.
To power other cellular processes, ATP captures and releases chemical energy obtained from the breakdown of food molecules.
Please if you don't know don't answer
Answers
Answer:
Mass = 50kg, a = 20m/sec^2
F = MA
F = 50 * 20
F = 1000N
F = MA
650 = M * 10
M = 650/10 = 65kg
The phenomenon of weightlessness occurs when there is no force of support on your body. when your body is effectively in free fall, accelerating downward at the acceleration of gravity, then you are not being supported.
F = Gm1m2/distance^2
F = 6.6726* 10 ^-11 * 70 * 5.98 * 10^24/(6.38 * 10^6)^2
hope it helps you
Ratan started business with cash Rs 50000
Answers
Answer:
what's the question here then ?????
Explanation:
nepal ????
New colors produced when any two of the primary colors of pigment are mixed; red, green, and blue
Answers
Answer:
A simulated example of additive color mixing. Additive primaries act as sources of light. The primaries red, green, and blue combine pairwise to produce the additive secondaries cyan, magenta, and yellow. Combining all three primaries (center) produces white.
when all of the primary colors are mixed it makes black
Explanation:
Potassium + Bromine
Lewis dot diagram
Answers
Answer:
Explanation:
.. | .. | -
K. + : Br . ----> K⁺ | : Br : |
.. | .. |
Can someone tell me the answer plz plz I’ll give you brainlist and points plz This is my final test No wrong answers
Answers
Answer:
Energy can enter or exit an open system
Explanation:
D
how do humans benefit from photosynthesis
Answers
Answer:
Explanation:
Without photosynthesis there would be no oxygen in the earth's atmosphere and we wouldn't be here!
What is the similarity between teeth and eggshells?
Answers
Explanation:
Because they share a similar composition, similar chemicals affect their structures in positive or negative ways. For example, fluoride – a staple in many dental practices – strengthens both enamel and eggshells and helps protect them from acids. Acids weaken and break down both substances. Scientists find this particularly concerning given that the ocean is growing increasingly acidic. They fear this may weaken the eggs of some marine species and harm their chance of survival. Most dentists recommend limiting aggressively acidic foods and beverages such as soft drinks.
Determine the number of moles in a sample of calcium that contains 6.34 x 1022
atoms.
Answers
Answer:
0.105 molesExplanation:
To find the number of moles in a substance given it's number of entities we use the formula
[tex]n = \frac{N}{L} \\[/tex]
where n is the number of moles
N is the number of entities
L is the Avogadro's constant which is
6.02 × 10²³ entities
From the question we have
[tex]n = \frac{6.34 \times {10}^{22} }{6.02 \times {10}^{23} } \\ = 0.105315...[/tex]
We have the final answer as
0.105 molesHope this helps you
I WILL DIE I HAVE A KNIFE IN MY HAND. ANSWER WITH EXPLANATION. If the sound is high pitched, then the wave's frequency would have a:
A.high frequency, short wavelength
B. high frequency, long wavelength
C. low frequency, long wavelength
D. low frequency, short wavelength
Answers
Answer:
A
Explanation:
High frequency, short wavelength
how is wind energy captured?
where is wind energy found?
how is water energy captured?
where is water energy found?
plz use the passage i put. plz and thank you!!!!!
Answers
What of these should Hailey include in her list?
Synthetic polymers are biodegradable.
Synthetic polymers are not flexible.
Synthetic polymers are recycled cheaply.
Synthetic polymers are inexpensive to produce.
Answers
Answer:
Hailey should add, they are inexpensive to produce.
Explanation:
Reason being why they are inexpensive to produce, is due to them being chemical based and easy to product in the factory setting. Which makes them extremely cheap to make.
Reason being why the others are wrong, synthetic polymers are not biodegradable as they are made in a factory with oils. Synthetic polymers are not flexible due to them being used for harder products. Synthetic polymers are not recycled cheaply as they are made with chemicals which makes it very hard to recycle.
answer:D
Explanation: i took it
SOMEONE HELP ME PLEASE ILL GIVE BRAINLY
Answers
Answer:
true
Explanation:
just did it
Which learning theory is based on associative learning?
Answers
Answer:
1. Classical conditioning. Classical conditioning is a type of associative learning based on the association between a neutral stimulus with another that is significant for a person or an animal in order to generate a similar response.
Have a great day/night, and stay safe!
How does knowing the meaning of prefix-trans help you remember what happens to light that strikes a translucent object ?
Answers
Explanation:
The prefix trans- and its variant tra- mean "across".
A translucent substance allows some light to go "across" it to the other side. Also, think about a transparent substance: it allows light to go "across" it; or a translation, it is a going "across" from one language into another.
A ball is moving at a speed of 6.70 m/s. If the kinetic energy of the ball is 3.10 J, what is the mass of the ball?
Answers
Answer:
0.14 kgExplanation:
The mass of the ball can be found by using the formula
[tex]m = \frac{2k}{ {v}^{2} } \\ [/tex]
v is the velocity
k is the kinetic energy
From the question we have
[tex]m = \frac{2(3.10)}{ {6.70}^{2} } = \frac{6.20}{44.89} \\ = 0.138115...[/tex]
We have the final answer as
0.14 kgHope this helps you
Once a ball is hit and no longer touches the mallet, it continues moving.
What causes the ball to continue moving?
Answers
What math is used to find density?
Answers
Answer:
[tex]\huge\mathtt{{\colorbox{silver}{ANSWER~~~↴}}}[/tex]
Density is the mass of an object divided by its volume. Density often has units of grams per cubic centimeter (g/cm3). Remember, grams is a mass and cubic centimeters is a volume (the same volume as 1 milliliter).
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bigger size elements have low ionization energy and high shielding effect .justify the statement
Answers
Bigger size elements have low ionization energy and high shielding effect because:
Shielding effect:This effect describes the decrease in attraction between an electron and the nucleus in any atom with more than one electron shell. The more electron shells there are, the greater the shielding effect experienced by the outermost electrons.When shielding effect decreases the attraction force exerted by the nucleus increases on valence electrons.As a result, atoms will be larger.Find more information about Shielding effect here:
brainly.com/question/26366780
According to Le Chatelier's principle, what happens to the equilibrium constant (K) when the concentration of the reactants is doubled? The value of the equilibrium constant (K) is doubled. The value of the equilibrium constant (K) is halved. The value of the equilibrium constant (K) remains the same. The value of the equilibrium constant (K) changes unpredictably.
Answers
Answer:
The value of the equilibrium constant (K) remains the same.
Explanation:
A state of dynamic equilibrium is said to have been achieved in a reaction system when the rate of forward reaction equals the rate of reverse reaction.
At equilibrium, doubling the initial concentration of reactants have no effect on the equilibrium constant K. The equilibrium will rather shift to the left or right as required in order to annul the constraint.
Answer:
C
Explanation:
Which sample contains the same number of atoms as a gram-atomic mass of He?
1.
6 g of C
2.
7 g of Li
3.
8 g of o
4.
9 g of F
Submit Answer
Answers
Answer: 2. 7g of Li
Explanation: A mole of any substance contains the same number of particles (Avogadro's number, 6.02*10^23). 1 gram atomic mass of He (4g) is equivalent to 1 mole; so is 1 gram atomic mass (7g) of Li
Which example shows how genetic engineering can be used in the agricultural industry?
A.
Two tomato plants that produce sweet tomatoes are crossed to produce offspring that also produce sweet tomatoes.
B.
A horse is bred with a donkey to produce a hybrid offspring that has characteristics of both parents.
C.
A gene for pest resistance is inserted into the genome of a corn plant.
D.
A sheep is cloned to produce an exact copy of the original sheep.
Answers
Answer:
c. a gene for pest resistance is inserted into the genome of a corn plant
Explanation:
Answer: A duh
Explanation:
becastse
What did you include in your response? Check all that
apply.
O No, thermal energy is not being transferred by
radiation in this image.
O The eggs are in direct contact with the metal pan,
which is in direct contact with the gas flame.
O Thermal energy is being transferred by conduction.
O Radiation transfers thermal energy by
electromagnetic waves.
O Radiation does not transfer thermal energy by
direct contact.
Answers
It requires energy to melt ice. Applying salt to the ice created a chemical reaction melting the ice. Were did the energy come from to melt the ice? *
Answers
Answer:
HOPE IT HELPS...
Explanation:
When added to ice, salt first dissolves in the film of liquid water that is always present on the surface, thereby lowering its freezing point below the ices temperature. Ice in contact with salty water therefore melts, creating more liquid water, which dissolves more salt, thereby causing more ice to melt, and so on
The table shows data for two groups of plants one grown with fertilizer and the other without fetalizer was the mean height of the plant given fertilizer
Answers
Answer:
What is the question?
Explanation:
the filament in an electric light bulb is made from a. platinum b. fiberglass c. aluminum d. tungsten
Answers
which of the following is a renewable resource a. copper b. aluminum c. peanut oil d. natural gas
Answers
Answer: c. peanut oil
Explanation: