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irga5000 [103]
3 years ago
6

I need help please!!​

Chemistry
1 answer:
Ivahew [28]3 years ago
6 0

Answer: number 4

Explanation:

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If an M&amp;M weighs 0.88 grams, how much would a mole of M&amp;Ms<br> weigh?
Snezhnost [94]

Answer:

5.30x10²³g

Explanation:

A mole can be understood as an amount of something.

One mole of eggs are 6.022x10²³ eggs

One mole of atoms are 6.022x10²³ atoms

One mole of molecules are 6.022x10²³ molecules

And 1 mole of M&M are 6.022x10²³ M&M. As 1 M&M weighs 0.88g, 1 mole will weigh:

0.88g*6.022x10²³ =

<h3>5.30x10²³g</h3>
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4 years ago
A solution is prepared by mixing 0.10 of 0.12 M sodium chloride with 0.23 L of a 0.18 M magnesium chloride solution. What is the
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Answer:

pCl⁻ = 0.54

Explanation:

First we <u>calculate how many Cl⁻ moles are coming from each substance</u>, using the <em>given volumes and concentrations</em>:

  • 0.12 M NaCl * 0.10 L = 0.012 mol NaCl = 0.012 mol Cl⁻
  • 0.18 M MgCl₂ * 0.23 L = 0.0414 mol MgCl₂ = (0.0414 * 2) 0.0828 mol Cl⁻

The final volume of the mixture is = 0.10 L + 0.23 L = 0.33 L

Now we <u>calculate [Cl⁻]</u>, using the<em> total number of Cl⁻ moles and the final volume:</em>

  • [Cl⁻] = (0.012 mol + 0.0828 mol) / 0.33 L = 0.29 M

Finally we <u>calculate the pCl⁻ of the resulting solution</u>:

  • pCl⁻ = -log[Cl⁻]
  • pCl⁻ = 0.54
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1: What is needed for photosynthesis? What are the results of photosynthesis?
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Carbon dioxide is an atmospheric constituent that plays several vital roles in the environment. It is a greenhouse gas that traps infrared radiation heat in the atmosphere. It plays a crucial role in the weathering of rocks. ... It is stored in biomass, organic matter in sediments, and in carbonate rocks like limestone.

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Repulsion Forces create the bent triatomic shape of a water molecule.

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Answer:=1

Explanation:H = 1, O = 16, C = 12, N = 14 and 14--13 = 1 and your answer is 1

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