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olga55 [171]
3 years ago
6

PLEASE ANSWER

Chemistry
1 answer:
Varvara68 [4.7K]3 years ago
7 0
I don’t know the answer to this question
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A 8.46 L sample oxygen gas at 267K and 1.23 atm is heated to 295K. If the volume changes to 6.98L, what is the new pressure?
horrorfan [7]

Answer:

The new pressure is 1,65 atm

Explanation:

We use the gas formula, which results from the combination of the Boyle, Charles and Gay-Lussac laws. According to which at a constant mass, temperature, pressure and volume vary, keeping constant PV / T.

(P1xV1)/T1= (P2xV2)/T2

(1,23atmx 8,46L)/267 K = (P2 x 6,98L)/ 295K

0,039 atmx L/K = (P2 x 6,98L)/ 295K

P2=(0,039 atmx L/K)x 295K/6,98L =1,65 atm

7 0
3 years ago
20 points to anybody that can answer all 3 of these questions
Brilliant_brown [7]

Answer:

1. 2AgO2 --> 4 Ag + O2

2. Decomposition

3. 2NaBr + CaF2 --> 2NaF + CaBr2

Explanation:

3 0
3 years ago
Read 2 more answers
Find the mass percentage of water in ZnSO4 · 7H20<br><br><br> PLEASE HELP
netineya [11]

Answer:

Hello, I can help!

Explanation:

<u>Molecular Formula:</u> ZnSO4. 7H2O or H14O11SZn

<u>Molecular Weight: </u>287.6 g/mol

<h2><u>Computing molar mass (molar weight)</u></h2>

<u>Functional groups:</u> D, Ph, Me, Et, Bu, AcAc, For, Ts, Tos, Bz, TMS, tBu, Bzl, Bn, Dmg

<u>Common compound names.</u>

Examples of molar mass computations: NaCl, Ca(OH)2, K4[Fe(CN)6], CuSO4*5H2O, water, nitric acid, potassium permanganate, ethanol, fructose.

-Molecular mass (molecular weight) is the mass of one molecule of a substance and is expressed in the unified atomic mass units (u). (1 u is equal to 1/12 the mass of one atom of carbon-12)

-Molar mass (molar weight) is the mass of one mole of a substance and is expressed in g/mol.

God bless you!

8 0
3 years ago
What is the maximum number of electrons that can go into the D orbitals
solong [7]
The maximum number is 10 electrons
3 0
3 years ago
What is the molar mass of HBR
alexdok [17]

Answer:

Molar mass of bromine is equal to 80.9119

Explanation:

The molar mass of HBr is equal to the sum of atomic weight of  Bromine.

Atomic Weight of hydrogen is equal to 1.00794

Atomic Weight  of Bromine is equal to 79.904

Molar mass of Bromine

= Atomic Weight of hydrogen + Atomic Weight  of Bromine

Molar mass of Bromine  = 79.904 + 1.00794  = 80.9119

3 0
3 years ago
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