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
Pavel [41]
3 years ago
13

Which of the following releases matter? A.engaging a car exhaust system B.picking up iron filings with a magnet C.turbines spinn

ing in a power plant D.turning on an electric hot plate
Chemistry
1 answer:
igomit [66]3 years ago
4 0
A- engaging a car exhaust system
You might be interested in
How does water heat earth
vovikov84 [41]
The answer is the 3rd one down I think
6 0
3 years ago
1. Why is it necessary to equalize the pressure(i.e, have the water level the same in each tube) before taking a volume reading?
Anna11 [10]

Answer:

If you contact water with a gas at a certain temperature and (partial) pressure, the concentration of the gas in the water will reach an equilibrium ('saturation') according to Henry's law.

Explanation:

This means: if you increase the pressure (e.g. by keeping the vial closed), the CO2 concentration will increase. So it simply depends what concentration you need for your assay: 'CO2-saturated' water at low pressure or 'CO2-saturated' water at high pressure.

3 0
2 years ago
If 60. liters of hydrogen gas at 546 K is cooled to 273 K at constant pressure, the new volume of the gas would be
Korvikt [17]

Answer:30 L

Explanation:

Initial Volume

=

V

1

=

60

l

i

t

e

r

Initial Temperature

=

T

1

=

546

K

Final Temperature

=

T

2

=

273

K

Final Vloume

=

V

2

=

?

?

Sol:-

Since the pressure is constant and the question is asking about temperature and volume, i.e,

V

1

T

1

=

V

2

T

2

⇒

V

2

=

V

1

⋅

T

2

T

1

=

60

⋅

273

546

=

60

2

=

30

l

i

t

e

r

⇒

V

2

=

30

l

i

t

e

r

Hence the new volume of the gas is

30

l

i

t

e

r

6 0
3 years ago
Chemist and physicist marie curie became famous for her pioneering research on radioactivity. What are the two chemical elements
wolverine [178]

Answer:

The two elements are POLONIUM and RADIUM.

Explanation:

Maria Curie is a French physicist and chemist, though she was of a Polish naturals. She was the first woman to receive a Noble Price which she earned for conducting leading and head way research on radioactivity. She discovered the theory of radioactivity; also the techniques isolating radioactive isotopes. These helped her and her husband discover Polium and Radium.

4 0
3 years ago
Read 2 more answers
Gorillas have 48 chromosomes. The egg cell of a female gorilla has ____ chromosomes. 96 48 or 24
exis [7]
It would be 24 because they inherit half of there chromosomes from their dad and the other half from their mom<span />
4 0
3 years ago
Read 2 more answers
Other questions:
  • Convert 6.90 x 10-3 km to nm3
    10·1 answer
  • a student used 10 mL water instead of 30 mL for extraction of salt water from mixture. how may this change the percentage of NaC
    11·1 answer
  • What is a measure of average kinetic energy of the particles in a substance?
    15·1 answer
  • Each liter of air has a mass of 1.80 grams. How many liters of air are contained in 2.5x10^3 kilogram of air?
    14·1 answer
  • (3 points)
    6·2 answers
  • Vinegar has a density of 1.01 g/mL and freezes at approximately 2°C (36°F). It has a sour taste and is often used to make pickle
    14·1 answer
  • How many milliliters of an aqueous solution of 0.193 M potassium carbonate is needed to
    10·1 answer
  • Which type of front is occurring at Point A on the map?
    9·1 answer
  • .............................................................. ......
    14·1 answer
  • If vegetable oil is made out of vegetables and olive oil is made out of olives is baby oil made from baby’s
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!