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rosijanka [135]
3 years ago
8

Which response is a positive way to manage stress?

Chemistry
1 answer:
Xelga [282]3 years ago
6 0

Answer: Eating healthy is a postive way

Explanation:

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The chemical formula for magnesium oxide is MgO. A chemist determined by measurements that 0.030 moles of magnesium oxide partic
tamaranim1 [39]

Answer:

1.209g of MgO participates

Explanation:

In this problem, we have 0.030 moles of MgO that participates in a particular reaction.

And we are asked to solve for the mass of MgO that participates, that means, we need to convert moles to grams.

To convert moles to grams we need to use molar mass of the compound:

<em>1 atom of Mg has a molar mass of 24.3g/mol</em>

<em>1 atom of O has a molar mass of 16g/mol</em>

<em />

That means molar mass of MgO is 24.3g/mol + 16g/mol = 40.3g/mol

And mass of 0.030 moles of MgO is:

0.030 moles MgO * (40.3g/mol) =

<h3>1.209g of MgO participates</h3>
3 0
2 years ago
An aqueous solution is analyzed and found to contain potassium ions and sulfite ions. write the equation for the dissolution of
enot [183]
1) T<span>he dissolution of the salt potassium sulfite:
K</span>₂SO₃(aq) → 2K⁺(aq) + SO₃²⁻(aq).
Potassium has +1 charge because it lost one electron to accomplish stabile electron configuration of noble gas argon.
2) From dissolution reaction: n(K⁺) : n(SO₃²⁻) = 2 : 1.
n(K⁺) = 0.700 mol.
0.700 mol : n(SO₃²⁻) = 2 : 1.
n(SO₃²⁻) = 0.700 mol ÷ 2.
n(SO₃²⁻) = 0.350 mol; amount of sulfite anions.
7 0
3 years ago
The function of the respiratory system is to ________. create oxygen and break down carbon dioxide supply the body with oxygen a
rosijanka [135]

Answer:

Explanation: the function of the respiratory system is to supply the blood with oxygen in order for the blood to deliver oxygen to all parts of the body.

6 0
2 years ago
Which element has a complete valence electron shell? selenium (Se) oxygen (O) fluorine (F) argon (Ar)
kirill115 [55]

Answer:

oxygen (O)

Explanation:

.

3 0
3 years ago
Read 2 more answers
Which substance is composed of atoms that all have the same atomic number
Ierofanga [76]

Answer:

dont just go off of me because im not sure but i think its c

Explanation:

6 0
2 years ago
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