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liq [111]
4 years ago
12

Why is this reaction considered to be exothermic? a Because energy difference A is greater than energy difference C. b Because e

nergy difference A and energy difference C are about equal. c Because energy difference B is greater than energy difference A. d Because energy difference B is greater than energy difference C. e Because energy difference B is greater than energy difference C plus energy difference A.
Chemistry
1 answer:
Pani-rosa [81]4 years ago
4 0

Answer:

we would need a bit more info for this

Explanation:

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Which of the following is fact-based science rather than part of a belief system
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Answer:

c. chemistry

Explanation:

it uses science and math which are based on facts.

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3 years ago
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Photosynthesis is a redox reaction. This means that H2O is _____ during the light reactions and CO2 is _____ during the Calvin c
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Answer:

A. consumed; consumed

Explanation:

Photosynthesis is the process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water. Photosynthesis in plants generally involves the green pigment chlorophyll and generates oxygen as a byproduct.

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3 years ago
650.J is the same amount of energy as? <br>2720cal<br>1550cal<br>650.cal<br>2.72cal
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<u>Ans: 650 J = 155 calories</u>


<u>Given:</u>

Energy in joules = 650 J

<u>To determine:</u>

The energy in calories

<u>Explanation:</u>

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3 years ago
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A 46.2 mL,0.568 M calcium nitrate solution is mixed with 80.5mL of 1.396M calcium nitrate solution.Calculate tge concentration o
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Answer:

1.09 M

Explanation:

Let's define the equation that will be used to calculate the final concentration of the resultant calcium nitrate solution. In order to calculate it, we need to find the total number of moles of calcium nitrate and divide by the total volume of the resultant solution:

c=\frac{n}{V}

This equation firstly helps us find the number of moles of calcium nitrate. Multiplying molarity by volume will yield the moles. Adding the moles from the first component to the second component will provide us with the total number of moles of calcium nitrate:

n_{Ca(NO_3)_2}=46.2 mL\cdot0.568 M+80.5 mL\cdot1.396 M=138.62 mmol

Now, the total volume of this solution can be found by adding the volume values of each component:

V_total=46.2 mL+80.5 mL=126.7 mL

Finally, dividing the moles found by the total volume will yield the final molarity:

c_{final}=\frac{138.62 mmol}{126.7 mL}= 1.09 M

6 0
3 years ago
What bond forms from an unequal sharing of electrons between atoms in a molecule? a nonpolar covalent bond a hydrophobic interac
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Sharing of electrons always means its a covalent bond, and unequal means it is polar, so it is a polar covalent bond
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