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
blondinia [14]
3 years ago
7

ASAP I AM GIVING BRAINLIEST PLEASEEEEEEEEE HELPPPPPPPPPPPPPPPPPP

Chemistry
1 answer:
zepelin [54]3 years ago
7 0

Answer:

B?

Explanation:

In the example, the amount of hydrogen is 202,650 x 0.025 / 293.15 x 8.314472 = 2.078 moles. Use the mass of the hydrogen gas to calculate the gas moles directly; divide the hydrogen weight by its molar mass of 2 g/mole. For example, 250 grams (g) of the hydrogen gas corresponds to 250 g / 2 g/mole = 125 moles.

You might be interested in
Select all of the ways collection areas use to gain water. precipitation falls direction into the collection area runoff from pr
MrRissso [65]
The answer will be A & B not only because it makes sense but evaporation is taking water away not adding to (gaining)
4 0
3 years ago
What causes a water strider to be able to walk on water?
Lena [83]

Answer:

By repelling water, the tiny water striders stand on the water's surface and the captured airs allows them to float and move easily.  so number 2. Surface Tension.

Explanation:

The attraction between water molecules creates tension and a very delicate membrane. Water striders walk on this membrane. ... The legs have tiny hairs that repel water and capture air.

8 0
3 years ago
Read 2 more answers
Discussion Questions 1. Given the equilibrium equation for a general reaction, A + B  C + D, explain what happens to the reacta
ANTONII [103]

Answer:The equilibrium constant for a given reaction is [concentration of products]/[concentration of reactants].

Explanation:

Equilibrium constant=[concentration of products]/[concentration of reactants]

The concentration of reactant  molecules is maximum at time 0 and it  decreases as the reaction proceeds, The concentration of product molecules increases.At equilibrium the concentration of reactants and products are equal.

All the changes would occur in accordance with the LeChateliers principle.

For the given reaction the following changes would occur:

a When CO is removed from the reaction mixture so the reaction would shift towards right that is in forward direction as we are decreasing the concentration of CO so the system would try to increase the concentration of CO and that can happen by more production of CO.

b Since the above reaction is an endothermic reaction so when we would be adding heat to the system that is when we would increase the temperature  the reaction would shift forwards as  more heat energy is absorbed by reactants  to form more products.

c When more CO₂ is added so more amount of reactants are added to the system so the system would try to decrease the amount of reactants that is CO₂ and hence more amount of products would be formed.The reaction would shift in forward direction.

d Since  this reaction is endothermic in nature so when we remove the heat from reaction hence even less amount of heat is present in the system and so the reaction shift in backward direction as the reaction cannot proceed without enough amount of heat.

8 0
3 years ago
If a class has 120 students and the professor wants to purchase two cookies per student (or 2 coo/stu) he or she will need to bu
klio [65]
60 just divide 120 by 2
7 0
3 years ago
Approximately, how many days does it take for an insect to grow from an egg to an adult?
vlabodo [156]
D.)14 to 16 days ... at least for a fly with is an insect also
plz mark branliest
8 0
3 years ago
Read 2 more answers
Other questions:
  • Which statement is true about writing chemical formulas of covalent compounds?
    6·2 answers
  • the volume of a gas is 250mL at 340.0kPa pressure. what will the volume be when the pressure is reduced to 50.0kPa assuming the
    7·1 answer
  • The half-life of a radioactive isotope is 20 minutes. What is the total amount of 1.00 g of sample of this isotope remaining aft
    6·1 answer
  • A student determines the aluminum content of a solution by first precipitating it as aluminum hydroxide, and then decomposing th
    10·1 answer
  • What is the lowest temperature a human can survive?
    15·1 answer
  • An ocean trench .
    13·2 answers
  • Use the changes in oxidation numbers to identify which atom is oxidized, reduced, the oxidizing agent, and the reducing agent. 5
    8·1 answer
  • Volume (at STP) of 5.2x10^26 molecules of CH4?
    10·1 answer
  • WORD BANK:
    14·2 answers
  • Write the formula for zinc dichromate
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!