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Natalija [7]
3 years ago
14

When is Chemistry taught to you in school? Like I want to learn chemistry but I don't know when they're going to teach it.

Chemistry
1 answer:
vitfil [10]3 years ago
4 0
Usually in highschool when you're a junior
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A 150 mL of oxygen gas is collected over water at 20 °C and 758 torr. What volume will the same sample of oxygen occupy at STP w
Stella [2.4K]

Answer:

The volume would be; 136.17 ml

Explanation:

Volume V1 = 150 mL

Temperature T1 = 20°C + 273 = 293 K

Pressure  P1 = 758 - 17.54 = 740.46 torr

At STP;

Volume V2 = ?

Pressure P2 = 760 torr

Temperature T2 = 273 K

Using the general gas equation;

P1V1 / T1   = P2V2 / T2

Making V2 subject of formulae;

V2 = P1V1T2 / T1P2

Inserting the values we have;

V2 = 740.46 * 150 * 273  /  293 * 760

V2 = 136.17 ml

3 0
3 years ago
If the forward reaction is favored in the equilibrium, what will increase?
Lorico [155]

Answer:

Option C:- concentration of products

Explanation:

According to Le Chateleir's principle,

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If the reverse reaction is favored in the equilibrium then concentration of products will decrease and concentration of reactants will increase.

5 0
4 years ago
What is the position of the element ammonia in periodic table?
Rashid [163]
Ammonia isn't an element, it's a compound made by mixing the elements Nitrogen and Hydrogen in the Haber process. Therefore, it isn't on the periodic table
8 0
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Molar mass of methanol=12 + 1×3 + 16 + 1=32g
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8 0
3 years ago
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A change that produces one or more new substances is called _____.
Vesnalui [34]

Answer:

the answer is c

Explanation:

a chemical change mean it changes it for ever and a physical change mean it can be changed back and evaporation means it turns solid water in to gas hope this helps

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3 years ago
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