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
seropon [69]
3 years ago
7

100.mL of a .795 M solution of KBr is diluted to 500.mL. what is the new concentration of the solution?

Chemistry
1 answer:
kap26 [50]3 years ago
4 0

Answer:

0.159 M

Explanation:

convert from mL to L then use the equation:

M1V1 = M2V2

rearrange to find M2

\frac{M1V1}{V2} = M2

\frac{(0.795 M)(0.100 L)}{0.500 L} = 0.159 M

You might be interested in
A sample of 250 g of water are heated from 40°C to 121°C, calculate the amount of heat energy absorbed.
Marysya12 [62]

Answer:

the anwser isn't in the choices

Explanation:

H=MC(change of temp.)

M=mass of water=250g

C=specific heat of water = 4.186 j/g

change in temperature is 121-40= 81

H= 250x4.186x81=84766.5J

7 0
3 years ago
Why do electrons enter the 4s orbital before entering the 3D orbital
garri49 [273]

The 3d sublevel is not filled until after the 4s sublevel, because the 3d sublevel has more energy than the 4s sublevel, and less energy than the 4p sublevel. (:

8 0
3 years ago
Compare and contrast the processes of mining coal and extracting oil​
Yuki888 [10]

Answer:

When you mine, you usually drill the oil whereas you mechanically press oil when you extract it.

Explanation:

hope this helped, sry it took so long.

4 0
3 years ago
What is the volume of one mole of any gas at STP?
Vikki [24]
The volume of one mole of any gas at Standard Temperature and Pressure (1 atm and 0 degrees Celsius [273K]) is 22.4 L.
7 0
3 years ago
I need help ASAP PLZ!!!! I’m having trouble with a question, “How does the particle theory of matter help you explain why cold w
Kamila [148]
Cooling a substance causes molecules to slow down and get slightly closer together, occupying a smaller volume that results in an increase in density. ... Cold water is more dense and will sink in room-temperature water.
8 0
3 years ago
Other questions:
  • There are two kinds of elements that didn't appear on the periodic table until after 1892. What kinds are they and why do you th
    6·2 answers
  • The proper protective equipment for working with hazardous chemicals in the lab includes close lab coat goggles and a fume Hood
    15·1 answer
  • Most scientific questions are based on opinions. hypotheses. observations. experimental dat
    14·1 answer
  • For which gases does the ratio of PV to RT equal a constant?
    12·1 answer
  • What volume does 2.25g of nitrogen gas, N2, occupy at 273 Celsius and 1.02 atm​
    11·1 answer
  • What is the molar mass of citric acid (C6H8O7) and baking soda (NaHCO3)?
    15·1 answer
  • Organic compounds undergo a variety of different reactions, including substitution, addition, elimination, and rearrangement. An
    12·1 answer
  • CFx where x stands for a whole number. Measurements also show that a certain sample of the unknown compound contains 8.5 mol of
    12·1 answer
  • Un recipiente cerrado, de 4,25 L, con tapa móvil, contiene H2S(g) a 740 Torr y 50,0°C. Se introduce en ese recipiente N2(g) a te
    12·1 answer
  • Does iron and lead oxide react vigorously
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!