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Orlov [11]
2 years ago
13

Jonas mixes citric acid with baking soda. How does he know the reaction is endothermic?

Chemistry
1 answer:
Kipish [7]2 years ago
6 0

Answer:

D. The temperature of the the solution increases

Explanation:

Endothermic. Endo means in and thermic means a temperature, so Endothermic means the taking in of an temperature and the only answer choices that deal with temperature is,A and D. If it absorbs temperature it's going to rise.

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Number 2

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What type of bond is this combination likely to form
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A combination is certainly possible, but you should not take formal charges so literally

Normally, when a covalent bond is found, the two atoms both bring in one electron. As you identify correctly, in the case of nitric acid that would not be possible completely. If you draw the different possible resonance structures, the most likely structure has a single bond between the nitrogen and an oxygen where the oxygen has 3 lone pairs and both electrons in the bond are donated by the nitrogen. This makes the nitrogen "positive" and that oxygen "negative", but in fact the electrons move more freely in the molecule and charges are more distributed. You will not be able to find "the negatively charged" oxygen atom.

Explanation:

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4 0
3 years ago
What is the concentration of each ion in a solution that is prepared by dissolving 5.00 g of ammonium chloride in enough water t
const2013 [10]

Answer:

C = 0.08M

Explanation:

molar mass of AlCl3

Al =27

Cl = 35.5

27+3(35.5) =133.5g/mol

n= mass/Molar mass

n =CV

CV = mass/molar mass

C x 500 x 10^-³ = 5/133.5

C x 500 x 10^-³ = 0.04

C = 0.04/500 x 10^-³

C = 0.08M

4 0
3 years ago
Which best describes why it is important for a scientist to use the metric system when recording data?
Andrews [41]

Answer:

Either C or D

Explanation

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8 0
2 years ago
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Which of the following electron configurations for neutral atoms is correct?
pochemuha

Answer:

the correct answer is argon: 1s 2^2s 2^2p 6^3s 2^3p^6​

Explanation:

4 0
3 years ago
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