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Sedbober [7]
3 years ago
13

What is shared when molecules are formed?

Chemistry
2 answers:
Scrat [10]3 years ago
7 0
I believe your answer is D
zimovet [89]3 years ago
3 0
D electrons
a bond is not a physical material, it's an action
protons and neutrons are specific to that atom, and the amount doesn't change.
when atoms bond together, they share electrons to make themselves neutral
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3 years ago
18. What is the maximum temperature for holding cold, potentially hazardous food?
satela [25.4K]

Answer: I believe the correct answer is C.  41 degrees Fahrenheit.

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Hope this helps! ^^

8 0
3 years ago
The constant- pressure heat capacity of a sample of a perfect gas was found to vary with temperature according to the expression
vivado [14]

A perfect gas, commonly known as an ideal gas, would be a gas that, in physical behavior, conforms towards the general gas law, which would be a <u><em>specific, idealized relationship between pressure, volume, and temperature,</em></u> and further calculation can be defined as follows:

For question a:

q=\int C_p dT=\int^{200+273K}_{25+273 K} [20.17 + 0.3665 (\frac{T}{K})] dT JK^{-1}\\\\

  =[(20.17)T +\frac{1}{2}(0.3665)\times (\frac{T^2}{K})]^{473K}_{298K}\ JK^{-1}\\\\=[(20.17)\times(473-293) +\frac{1}{2}(0.3665)\times (473^2-293^2)]\ J\\\\=[(20.17)\times(180) +\frac{1}{2}(0.3665)\times (223729-85849)]\ J\\\\=[3630.6 +(0.18325)\times (137880)]\ J\\\\=[3630.6 +25266.51]\ J\\\\=[28897.11]\ J\\\\=[28.8 \times 10^{3}] \ J\\\\

W= -p \Delta V= -nR\Delta T= -(1.00\ mol) \times 8.3145\ J K^{-1}\ mol^{-1} \times 100\ K=-831\ J\\\\\Delta U= q+w=(28.8 -0.831)\ KJ= 27.969\ KJ\\\\

 For question b:

In this question, the energy and enthalpy of a perfect gas depend on temperature alone, therefore \Delta H= 28.8 \ KJ and \Delta U= 27.969\ KJ as above at constant volume w=0 and \Delta U=q so, q=27.969 \ KJ.

Learn more:

brainly.com/question/4270867

6 0
3 years ago
What is the answer to #11 and how do you find it?
Greeley [361]
The answer to number 11 is 76.04 g!! I have attached a picture showing you my work. You want to go from mass to moles, so i first wrote down the info that we know- 2.00 mol. I then determined the mass of H2O2 in one mol

I did this by looking at the periodic table and looking at the atomic mass (bottom number) for each element and it’s quantity.

I then multiplied 2.00 by 38.03 because the bottom number on the fence post (1 mol) cancels out! I hope this helps you!














3 0
3 years ago
12. If a reaction is exothermic,
Ksenya-84 [330]

Answer:

In the case of an exothermic reaction, the reactants are at a higher energy level as compared to the products, as shown below in the energy diagram. In other words, the products are more stable than the reactants. Overall Δ H ΔH ΔH for the reaction is negative, i.e., energy is released in the form of heat.

Explanation:

3 0
3 years ago
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