1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Romashka [77]
3 years ago
8

How many moles does the mass quantity 130g of H2O have?

Chemistry
1 answer:
SVETLANKA909090 [29]3 years ago
7 0
It has 7.22 moles.... mole =mass/molar mass
molar mass of H2O=18
130/18=mole
You might be interested in
Help me plz #10 would appreciate it
DaniilM [7]
C I’m pretty sure. I can explain just lmk
7 0
3 years ago
Gasoline has a density of 0.749 g/mL. How many pounds does 19.2 gallons of gasoline weigh? Use significant figures. Do not enter
Yanka [14]
In this question, you are given the gasoline density (0.749g/ml) and volume of the gasoline (19.2 gallons). You are asked the mass of the gasoline in pounds. Then you need to change the grams into pounds and the ml into gallons. The calculation would be:

mass of gasoline= density * volume
mass of gasoline=  0.749g/ml * (1 pound/453.592grams) * 3785.41ml/gallon * 19.2 gallon= 120 pounds

7 0
3 years ago
Prove that PV = nRT.​
qaws [65]

Find your answer in the explanation below.

Explanation:

PV = nRT is called the ideal gas equation and its a combination of 3 laws; Charles' law, Boyle's law and Avogadro's law.

According to Boyle's law, at constant temperature, the volume of a gas is inversely proportional to the pressure. i.e V = 1/P

From, Charles' law, we have that volume is directly proportional to the absolute temperature of the gas at constant pressure. i.e V = T

Avogadro's law finally states that equal volume of all gases at the same temperature and pressure contain the same number of molecules. i.e V = n

Combining the 3 Laws together i.e equating volume in all 3 laws, we have

V = nT/P,

V = constant nT/P

(constant = general gas constant = R)

V = RnT/P

by bringing P to the LHS, we have,

PV = nRT.

Q.E.D

6 0
3 years ago
Which lab safety rule do you think is the most important to follow in chemistry lab?
Flauer [41]

Answer:

Practice good personal hygiene. Wash your hands after removing gloves, before leaving the laboratory, and after handling a potentially hazardous material. While working in the laboratory, wear personal protective equipment - eye protection, gloves, laboratory coat - as directed by your supervisor.

Explanation:

7 0
3 years ago
How many Liters are there in 51. 300 cm? (11 = 1000 cm)
Black_prince [1.1K]

Answer:

4,572.67

Explanation:

11 divided by 1000= 90.90

44= 11x

x=4

4 x 11= 4000

44-51.300=6.300

6.300 x 90.90=572.67

4000 + 572.67 = the answer

7 0
3 years ago
Other questions:
  • Farmers spray pesticides to protect fruits from pests. What is a possible harmful effect of using pesticides
    12·2 answers
  • Which of the following is an organic acid?<br><br> CH3COOH<br> C2H6O<br> CH2O<br> CH4
    14·2 answers
  • What is the oxidation number of sulfur in the compound: Na2S2O3
    10·1 answer
  • A sample of gas occupies 555mL at 175 cm Hg and a temperature of 37.0C. What is the new volume (in mL) at STP?
    6·1 answer
  • Four properties of water are listed.
    10·1 answer
  • Which has greater internal energy, 1 kg of water or 1 g of water, at the same temperature?
    12·1 answer
  • If two clear aqueous solutions are mixed and a colored precipitate forms, what type
    12·1 answer
  • How many moles of alumminum os needed to react woth 6.34 moles of fe3o4 in thereaction below? 8al + 3fe3o4_ 4al2o3 +9 fe
    15·1 answer
  • 1. Calculate how many moles of glycine are in a 130.0-g sample of glycine.2. Calculate the percent nitrogen by mass in glycine.
    8·1 answer
  • I need help ASAP please
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!