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
Bess [88]
3 years ago
10

Help pls I don’t know the answer

Chemistry
1 answer:
vovikov84 [41]3 years ago
4 0

Answer:

The first one is correct.

Explanation: Eh Are you cheating on quiz?

You might be interested in
A sample of 35.1 g of methane gas has a volume of 5.20 l at a pressure of 2.70 atm. calculate the temperature of the gas.
melisa1 [442]
We can use the ideal gas equation to determine the temperature with the given conditions of mass of the gas, volume, and pressure. The equation is expressed
PV=nRT where n is the number of moles equal to mass / molar mass of gas. Substituting the given conditions with R = 0.0521 L atm/mol K we can find the temperature
6 0
3 years ago
If you have 20.8 grams of zinc (Zn), how many moles of zinc do you have?
Nezavi [6.7K]

Answer:

If you have 20.8 grams of zinc, you would around 0.318 moles

Explanation:

1 mole of Zn is around 0.015295.

When you multiply 0.015295 and 20.8, you would get around 0.318 moles so:

1 mole Zn = 0.015295

20.8 × 0.015295 = 0.318

6 0
3 years ago
Lisa was wearing her lab coat, closed-toed shoes, and gloves, and she had her hair pulled back. She wore her contacts to class,
Lubov Fominskaja [6]
She should have removed her contact lenses when rinsing.
4 0
4 years ago
Read 2 more answers
Why do frogs have such small cerebrum?
Phoenix [80]
The cerebrum is part of the brain that controls the functions of the voluntary activity in the body. If an organism is smaller than another organism, for this case a frog and a rabbit. It means that the frog and the processes inside that body are less complex. Thus, the cerebrum do not need to be bigger than the cerebrum of a bigger organism.
6 0
3 years ago
How many moles are in 2.12g Cr2O3
ohaa [14]

Answer:

0.01395mol Cr2O3

Explanation:

the molar mass of Cr2O3 is 151.9904 g/mol

2.12g Cr2O3 x 1 mol/151.9904g = 0.01395mol Cr2O3

4 0
3 years ago
Other questions:
  • 2) which statement describes ionic bonding?
    5·1 answer
  • Does Polyethylene terephthalate (PET) float on water? salt water? hot water?
    5·1 answer
  • What are the possible consequences of adding a chemical to the environment
    7·2 answers
  • Bacteria are taken into cells by?
    6·1 answer
  • A 2.5 mol sample of phosphorus pentachloride, PCl5 dissociates at 160C and 1.00atm to give 0.338 mol of phosphorus trichloride a
    13·1 answer
  • Count the number atoms in the following compound<br> 3 Al(OH)3<br> AL=<br> O<br> H=<br> 1<br> 2
    11·1 answer
  • 5. Calculate the number of molecules of carbon tetrachloride in 0.32 mol of
    6·1 answer
  • Which reason best explains why plasmas are good conductors of electricity? They have mobile charged particles. They are at extre
    7·2 answers
  • Which statement most accurately describes a chemical equation?
    6·1 answer
  • 1. __C4H10 + __O2 --&gt; __CO2 + __H2OYou have 6 moles of C4H10. How many moles of H2O will be produced?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!