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
PolarNik [594]
3 years ago
14

What element melts at -157°c

Chemistry
1 answer:
MrRissso [65]3 years ago
6 0

Answer:

Krypton

Explanation:

You might be interested in
if 30L of oxygen is cooled from 200 degrees C to 1 degree C at constant pressure, what is the new volume of the oxygen?
gayaneshka [121]
The new volume of the oxygen would be 17.4 L. I think it's 17.4 L but I don't know. I hope it was helpful.
8 0
3 years ago
Who dis who dis who dis​
Nataliya [291]

Actually when you look that up.... UH that is hair loss or he could be considered MR. CLEAN

3 0
2 years ago
Read 2 more answers
What is the molarity of a solution of 14.0 g NH4Br in enough H2O to make 150 mL of solution?
kiruha [24]
The molarity of a solution equals to the mole number of the solute/the volume of the solution. For NH4Br, we know that the mole mass is 98. So the molarity is (14/98) mol /0.15 L=0.95 mol/L.
8 0
3 years ago
Read 2 more answers
Which statement describes the reaction involved in cellular respiration?
Masteriza [31]

Answer:

i think its b

Explanation:

if you removed the C02 from the atmosphere that

willl make the 02 and it will

released for the atmosphere

which means, Photosynthesis removes CO2 from the atmosphere and replaces it with O2. Respiration takes O2 from the atmosphere and replaces it with CO2. However, these processes are not in balance. Not all organic matter is oxidized.   photosynthesis mean if you dont know: Photosynthesis – plants produce their own food in the form of glucose using the process of photosynthesis. This process uses sunlight (and so only occurs during the day) to remove carbon dioxide from the atmosphere and release oxygen.

this is why the CO2 is removed and the 02 is released into the atmosphere,   Consumers such as animals, fungi, and bacteria get their energy from this excess biomass either while living or dead and decaying. Oxygen from the atmosphere is combined with carbohydrates to liberate the stored energy. ... Photosynthesis removes CO2 from the atmosphere and replaces it with O2.

and if the CO2 is release from the atmosphere this will happen --> Carbon dioxide causes about 20 percent of Earth's greenhouse effect; water vapor accounts for about 50 percent; and clouds account for 25 percent. ... Likewise, when carbon dioxide concentrations rise, air temperatures go up, and more water vapor evaporates into the atmosphere—which then amplifies greenhouse heating CO2 effects the wither,   Scientists say that if CO2 doubles, it could raise the average global temperature of the Earth between two and five degrees Celsius. We are already increasing the amount of energy that bounces back to the Earth. Because of the greenhouse effect, this is causing global warming with its many destructive impacts.     im sorry that i gave alot of facts my teacher said its good to add alot of facts some of my thoughts thank you i hope you get this right :)

8 0
3 years ago
Read 2 more answers
Classify the chemical equations as being balanced or not balanced. 2CO 2NO → 2CO2 N2 6CO2 6H2O → C6H12O6 O2 H2CO3 → H2O CO2 2Cu
marissa [1.9K]

Answer:

2CO 2NO → 2CO2 N2 : Balanced

6CO2 6H2O → C6H12O6 : Unbalanced

H2CO3 → H2O CO2 : Balanced

2Cu O2 → CuO : Unbalanced

Explanation:

1.) 2CO 2NO → 2CO2 N2

2 Carbon 2

4 Oxygen 4

2 Nitrogen 2

The amount of atoms of each element on each side of the equation are the same therefore the equation is balanced.

2.) 6CO2 6H2O → C6H12O6 O2

6 Carbon 6

12 Oxygen 8

12 Hydrogen 12

The amount of oxygen atoms is different on both sides of the equation therefore the equation is not balanced.

3.) H2CO3 → H2O CO2

2 Hydrogen 2

1 Carbon 1

3 Oxygen 3

The amount of atoms of each element is the same on both sides of the equation therefore the equation is balanced.

2Cu O2 → CuO.

2 Cu 2

2 O 1

The amount of oxygen atoms is different on both sides of the equation therefore the equation is not balanced.

4 0
2 years ago
Other questions:
  • The statement "matter can be neither created nor destroyed by chemical means, but it can be changed from one form to another" is
    9·1 answer
  • A double colvalent bond involves two atoms sharing two electrons. True or false?
    6·1 answer
  • 1
    7·1 answer
  • Chemists use activity series to determine whether which type of reaction will occur?
    7·1 answer
  • Suppose you believe your unknown compound is NaOH, and you prepare 20 mL of a 0.1 mol/L solution of it. The stockroom provides a
    9·1 answer
  • Can someone help I’ll give s you BRAINLIST !!! I just need help in these question btw it’s science and 6th grade work plzz help
    14·1 answer
  • Photosynthesis is an example of a
    11·1 answer
  • Select the response(s) below that correctly describe(s) part of the process by which elements combine to form ionic compounds.
    15·1 answer
  • If air is a fluid, why do we not include the buoyant force caused by the displacement of air by the objects in this experiment?
    8·1 answer
  • What is an atom?Please help​
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!