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amm1812
3 years ago
14

1. From your best fit equation, calculate the pressure of the air inside the test tube if it were

Chemistry
1 answer:
neonofarm [45]3 years ago
3 0
13235 the gahhh ya fly if ftcvjfjdjdhhdhdgdbdhhffhdhhdhfhfhfhhrvrhdbdbbdndnbdbfbbfbfhhfjfnfj
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What volume of a 0.550 M solution of potassium hydroxide (KOH) can be made with 19.9 g of potassium hydroxide?
Natalija [7]

Answer:

0.645 L

Explanation:

To find the volume, you need to (1) convert grams to moles (using the molar mass) and then (2) calculate the volume (using the molarity ratio). The final answer should have 3 sig figs to match the sig figs of the given values.

(Step 1)

Molar Mass (KOH): 39.098 g/mol + 15.998 g/mol + 1.008 g/mol

Molar Mass (KOH): 56.104 g/mol

19.9 grams KOH              1 mole
--------------------------  x  -----------------------  =  0.355 moles KOH
                                     56.014 grams

(Step 2)

Molarity = moles / volume                            <----- Molarity ratio

0.550 M = 0.355 moles / volume                 <----- Insert values

(0.550 M) x volume = 0.355 moles              <----- Multiply both sides by volume

volume = 0.645 L                                          <----- Divide both sides by 0.550

6 0
1 year ago
In which group of teh modern periodic table are there very reactive metals and very reactive non metals?​
Rufina [12.5K]

Metals :-

Group 1A - Alkali metals ( highly reactive metals)

Non-metals :-

Group 17 - Halogens ( highly reactive non-metals )

5 0
3 years ago
What layer in the atmosphere has rain clouds
Hitman42 [59]
Troposphere has most of our clouds temperature etc
3 0
2 years ago
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What is the part of the earth that includes the solid crust and the rigid uppermost part of the martle
faltersainse [42]

Answer:

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Explanation:

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6 0
3 years ago
A small cube of iron and a large flat sheet of iron contain the same volume. Which one will completely rust first? Explain why.
Hunter-Best [27]

The flat sheet will completely rust before the iron cube. Since they both have the same volume, the flat sheet has more surface area than the small cube. This means more particles are exposed on the flat sheet that can react in a chemical reaction.

4 0
3 years ago
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