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Butoxors [25]
3 years ago
6

Devin investigated whether salt reduces the boiling point of water. She poured 1 gallon of 18

Chemistry
2 answers:
Tems11 [23]3 years ago
8 0

Answer:

e

Explanation:

Sati [7]3 years ago
6 0

Answer:

D. She did not heat the pots of water at the same time.

Explanation:

The water of the first pot was a different temperature before boiling than the second pot.

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Por ser la materia electrica neutra ¿como debe de ser el numero de electrones y el de protones?
kvasek [131]

Answer:

Deben ser de igual número.

Explanation:

8 0
2 years ago
Which of the following does not describe a characteristic of carbon
8_murik_8 [283]
What are the options? I can try to give you an answer if options are provided.
8 0
3 years ago
Write the formulas of the following compounds:
dem82 [27]

Answer:

a) Li2CO3

b) NaCLO4

c) Ba(OH)2

d) (NH4)2CO3

e) H2SO4

f) Ca(CH3COO)2

g) Mg3(PO4)2

f) Na2SO3

Explanation:

a) 2Li + CO3 ↔ Li2CO3

b) NaOH * HCLO4 ↔ NaCLO4 + H2O

c) Ba + 2H2O ↔ Ba(OH)2 +

d)  2NH4 + H2CO3 ↔ (NH4)2CO3 + H2O

c) SO2 + NO2 +H2O ↔ H2SO4 + NOx

f) 2CH3COOH + CaO ↔ Ca(CH3COOH)2 + H2O

g) 3MgO + 2H3PO4 ↔ Mg3(PO4)2 + H2O

h) NaOH + H2SO3 ↔ Na2SO3 + H2O

6 0
3 years ago
Air is made of nitrogen, carbon dioxide, and small amounts of other gases. What is the pressure of O₂, total is 1 atm if PN₂ = 5
Stolb23 [73]

Answer:

The pressure of O₂ is 0.8 atm.

Explanation:

The pressure exerted by a particular gas in a mixture is known as its partial pressure. So, Dalton's law states that the total pressure of a gas mixture is equal to the sum of the pressures that each gas would exert if it were alone:

PT = PA + PB

This relationship is due to the assumption that there are no attractive forces between the gases.

In this case:

PT=Pnitrogen + Pcarbon dioxide + Pother gases

Being:

  • Pnitrogen: 593.4 mmHg
  • Pcarbon dioxide: 3 mmHg
  • Pother gases: 7.1 mmHg

and replacing:

PT= 593.4 mmHg + 3 mmHg + 7.1 mmHg

you get:

PT= 603.5 mmHg

Being 760 mmHg= 1 atm, you get:

PT= 603.5 mmHg= 0.8 atm

<u><em>The pressure of O₂ is 0.8 atm.</em></u>

6 0
3 years ago
Mendeleev's periodic table of elements was created in 1901.<br> O A. True<br> O B. False
LiRa [457]
B. False
It was created in 1869
3 0
3 years ago
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