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Lelu [443]
3 years ago
7

NEED HELP! FAST! WILL CHOOSE BRAINLIEST ANSWER!

Chemistry
1 answer:
Jobisdone [24]3 years ago
6 0
Mechanical waves need mediums. or else it isn't a mechanical wave
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Cells make up tissues, Tissues make up Organs, and Organs make up Organ Systems.
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How many moles of KCl are required to prepare 1.50 L of 5.4 M KCl?
puteri [66]
5.4 M = moles of solute / 1.50 L 

<span>Multiply both sides by 1.50 L to isolate moles of solute on the right. </span>

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3 years ago
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How many grams of water can be produced from 4.6 grams of Hydrogen and 7.3 grams of Oxygen?
12345 [234]

Answer:

The answer to your question is 8.21 g of H₂O

Explanation:

Data

mas of water = ?

mass of hydrogen = 4.6 g

mass of oxygen = 7.3 g

Balanced chemical reaction

                   2H₂  +  O₂  ⇒   2H₂O

Process

1.- Calculate the atomic mass of the reactants

Hydrogen = 4 x 1 = 4 g

Oxygen = 16 x 2 = 32 g

2.- Calculate the limiting reactant

Theoretical yield = H₂/O₂ = 4 / 32 = 0.125

Experimental yield = H₂/ O₂ = 4.6/7.3 = 0.630

From the results, we conclude that the limiting reactant is Oxygen because the experimental yield was higher than the theoretical yield.

3.- Calculate the mass of water

                   32 g of O₂ ---------------- 36 g of water

                   7.3 g of O₂ ---------------   x

                          x = (7.3 x 36) / 32

                          x = 262.8 / 32

                          x = 8.21 g of H₂O

4 0
3 years ago
Make a prediction about the relative boiling points of the Noble gases
icang [17]

boilng points would boil overAnswer:

Explanation:

6 0
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Warm and cold air come together and neither air mass moves what kind of front is that
Marrrta [24]

Answer:

Stationary front

Explanation:

Stationary means they wont move ink but yeah thats  the answer

3 0
3 years ago
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