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hoa [83]
3 years ago
5

HELP PLEASE! *I will make you brainlist IF YOU CAN ANSWER ALL OF THE QUESTIONS!* (Read the directions)

Chemistry
1 answer:
Oliga [24]3 years ago
3 0

Explanation:

I would love to help but im not able to find where the questions are can you help with that?

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Pls help!<br> Is volume equal to mass over density?
olganol [36]

density = mass/volume

volume= mass/density

Yes, you're correct.

5 0
2 years ago
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3
atroni [7]

Answer:

(1) atomic numbers

Explanation:

The observed regularities in the properties of the elements on the periodic table are periodic functions of their atomic numbers.

  • Atomic number is the number of protons in an atom.
  • The periodic law states that "the properties of elements are a periodic function of their atomic number".
  • Elements on the periodic table are arranged based on the atomic numbers they contain.
  • The number of positively charged particles in an atom is the atomic number.
6 0
2 years ago
Please help me answer this
-Dominant- [34]

Answer:

1.01

Explanation:

you have to trust me

3 0
1 year ago
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A compound was found to be soluble in water. It was also found that addition of acid to an aqueous solution of this compound res
gogolik [260]

Answer:

c. Cr

Explanation:

Cr^3+(aq) + CO_3^2-(aq) ------------> Cr_2CO_3(s)

The compound is containing CO_3^2- ion.

If acid reacts with it, CO_2 evolves.

H^+ + CO_3^2- ----------> H_2O + CO_2

therefore,  Cr would form a precipitate when added to an aqueous solution of this compound. Cr2CO3 is the precipitate.

3 0
3 years ago
Consider three gases: Ar, SF6, and Cl2. If 50.0 grams of these gases are placed in each of three identical containers, which con
adoni [48]
The ideal gas law:
pV=nRT \Rightarrow p=\frac{nRT}{V}
p - pressure, n - number of moles, R - the gas constant, T - temperature, V - volume

The volume and temperature of all three containers are the same, so the pressure depends on the number of moles. The greater the number of moles, the higher the pressure.
The mass of gases is 50 g.

Ar \\&#10;M \approx 39.948 \ \frac{g}{mol} \\&#10;n=\frac{50 \ g}{39.948 \ \frac{g}{mol}} \approx  1.25 \ mol \\ \\&#10;SF_6 \\&#10;M \approx 146.06 \ \frac{g}{mol} \\&#10;n=\frac{50 \ g}{146.06 \ \frac{g}{mol}} \approx 0.34 \ mol \\ \\&#10;Cl_2 \\&#10;M=70.9 \ \frac{g}{mol} \\&#10;n=\frac{50 \ g}{70.9 \ \frac{g}{mol}} \approx 0.71 \ mol

The greatest number of moles is in the container with Ar, so there is the highest pressure.
4 0
3 years ago
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