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3 years ago

The rate of effusion of oxygen to an unknown gas is 0.935. what is the other gas?

Chemistry

1 answer:

Kamila [148]3 years ago

4 0

Answer:

Explanation:

Rate of effusion is defined by Graham's Law:

(Rate 1/Rate 2) = (sqrt (M2)/ sqrt (M1))

(Where M is the molar mass of each substance. )

Molar Mass of oxygen, O2, is 32 (M1).

Rate of effusion of O2 to an unknown gas is .935(Rate 1).

Rate 2 is unknown so put 1.

Solve for x (M2).

.935/1 = sqrt x/ sqrt32

.935 x sqrt 32 = sqrt x

5.29 = sq rt x

5.29^2 = 27.975 = 28

N2 has a molar mass of 28 so it is the correct gas.

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3 years ago

If you produced 76.10 grams of potassium chloride in the reaction how many grams of potassium were required?

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Answer:39.8375

Explanation:

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Then the molar mass of KCl is 74.5g

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3 years ago

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Answer:

the shape of a piece of matter can change

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3 years ago

Has anyone ever done this atom escape room thing

SVEN [57.7K]

Answer:

1. negative

2. positive

3. neutral

Explanation:

Ok so it looks like they are asking for the charge (positive, negative, or neutral) of each thing

So for 1, it would be negative, because it's pointing to an electron. Electrons always have a negative charge.

So for 2, it would be positive, because it's pointing to a proton. Protons always have a positive charge

So for 3, it would be neutral, because it's pointing to a neutron. Neutrons always have a neutral charge.

4 0

3 years ago

Pharmacists sometimes measure medicines in the unit of "grains," where 1 gr = 65 mg. The label on a bottle of aspirin reads "Asp

viva [34]

Answer:

325mg of Aspririn

Explanation:

First you should note the information that the problem gives you:

- The bottle of Aspirin has 5gr (grains)

- 1gr(grain) = 65mg (miligrams)

Also, the problem is asking about how many aspirin are in 5 gr (grains), so you should use a conversion factor, as follows:

-First you should put the quantity you need to convert:

$5grAspirin$

-Then you write the denominator of the conversion factor that must have the same units that you want to convert, in this case gr:

$5grAspirin*\frac{}{1grAspirin}$

-Then you write the numerator with the units that you want to obtain and the numerical equivalence between the units, in this case:

$5grAspirin*\frac{65mgAspririn}{1grAspirin}$

-Finally you multiply numerators and divide by denominators:

$5grAspirin*\frac{65mgAspririn}{1grAspirin}=325mgAspririn$

8 0

3 years ago