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Kryger [21]
2 years ago
15

Which of the following is a statement of Hess's law?

Chemistry
1 answer:
attashe74 [19]2 years ago
7 0

Answer:

C

Explanation:

the enthalpy of reaction is independent of the reaction path

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PLS HELP ASAP <br><br> How does the mass of an object affect its force?
seraphim [82]

Answer:

If mass increases, force increases.

Explanation:

hope this helps, pls mark brainliest :D

5 0
3 years ago
In the unbalanced equation given below, what is the element that is gaining electrons?
viktelen [127]

Hey there!:

HCl + MnO2 → MnCl2 + H2O + Cl2

* in HCl the oxidation state of Cl is -1 .

* on the product side the oxidation state is 0 .

* therefore Cl gains electrons .

* in  MnO2 the oxidation state of Mn is +4

* in MnCl2 the oxidation state of Mn is +2

Therefore Mn loses electrons

Answer A

Hope That helps!

4 0
2 years ago
Read 2 more answers
NaOH(aq) is transferred into a test tube. CaCl2(aq) is added to the tube. What is the formula for the precipitate (if any) that
Ilya [14]

Answer:

2NaOH (aq) + CaCl2 (aq) -> 2NaCl(aq) + Ca(OH)2(s)

Formula of precipitate: Ca(OH)2 <em>(s)</em>

Explanation:

First, we do the double replacement reaction to determine our chemical equation between the reactants and products. Once we have our products, with a solubility chart (I added one below) we can determine which of the products is soluble or insoluble.

In this case NaCl is soluble or aqueous (meaning it can dissolve in water) and Ca(OH)2 is insoluble (meaning that when the reactions takes place, these two will form a solid/precipitate)

6 0
2 years ago
Mr. Anthony has set up the lab many times for the experiment with acids and bases using litmus paper. In fact, he says he can pr
DiKsa [7]

Answer :script memory

Explanation:Script memory refers

to a particular theoretical

memory for the typical activities

that take place

during regular events.

He already knew that Blue litmus would turn red in an acid and red litmus turns blue in a base

5 0
3 years ago
7. You should see a diagonal band from top left to bottom right across your graph. These are called "main sequence stars". Descr
igor_vitrenko [27]

Answer: mmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm

Explanation:

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2 years ago
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