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
Kitty [74]
3 years ago
11

Heat energy is transferred on Earth by the processes of convection, conduction, and radiation. How does heat energy cause materi

als to move during convection? Choose the two statements that apply.
A. It causes colder materials to rise.
B. It causes denser materials to sink.
C. It causes warmer materials to sink.
D. It causes less dense materials to rise.
PLEASE HELP MEE!
Chemistry
1 answer:
lana66690 [7]3 years ago
5 0
I think it will be D or B but my mine answer is D
You might be interested in
PLS HELP I GIVE BRANLIEST !!!
yarga [219]

Explanation:

D. The total mass of the reactants equals the total mass of the

products.

6 0
3 years ago
a square boat made from iron has overall dimensions of 2.00 cm x 11.0 cm x 11.0 cm. it has a mass of 213 g. what is its density
Rus_ich [418]
Volume:

2.00 x 11.0 x 11.0 => 242 cm³

mass : 213 g

D = m / V

D = 213 / 242

D = 0.880 g/cm³

Answer B

hope this helps!
5 0
3 years ago
Read 2 more answers
2. What do you get when you add the following
irga5000 [103]

<u>a. one carbon and one oxygen?</u>

Answer:

(1) Carbon + (1) Oxygen = Carbon monoxide (CO)

Explanation:

Carbon monoxide (CO), an odorless, colorless gas, which can cause sudden illness and death, is produced any time a fossil fuel is burned.

https://www.cdc.gov/co/default.htm

<u>b. one carbon and two oxygen? </u>

Answer:

(1) Carbon + (2) Oxygen = Carbon dioxide (CO2)

Explanation:

a colorless, odorless gas produced by burning carbon and organic compounds and by respiration. It is naturally present in air (about 0.03 percent) and is absorbed by plants in photosynthesis.

https://www.britannica.com/science/carbon-dioxide

<u>c. one carbon and four chlorine?</u>

Answer:

(1) Carbon + (4) Chlorine = Carbon tetrachloride (CCl4)

Explanation:

Carbon Tetrachloride is a clear, colorless, volatile and very stable chlorinated hydrocarbon. Carbon Tetrachloride is used as a solvent for oils and fats, as a refrigerant and as a dry-cleaning agent. Inhalation of its vapors can depress central nervous system activity and cause degeneration of the liver and kidneys. Carbon Tetrachloride is reasonably anticipated to be a human carcinogen based on evidence of carcinogenicity in experimental animals.

https://pubchem.ncbi.nlm.nih.gov/compound/carbon_tetrachloride

I hope this helps, if it dose please give brainest, and have a nice day!

8 0
3 years ago
A solution is made by dissolving 373.5 g of Pb(NO3)2 (molar mass: 331.2 g/mol) in 2.00 × 103 g of water. What is the molality of
hram777 [196]
Answer:
molality = 0.564 m

Explanation:
Molality =  number of moles of solute / kg of solvent

1- getting moles of solute:
number of moles = mass / molar mass
we have:
mass = 373.5 g
molar mass = 331.2 g/mol
Therefore:
number of moles = 373.5 / 331.2 = 1.128 moles

2- getting kg of solvent:
mass in kg = mass in grams * 10⁻³
mass in kg = 2 * 10³ * 10⁻³
mass in kg = 2 kg

3- getting molality:
Molality =  number of moles of solute / kg of solvent
Molality = 1.128 / 2
Molalty = 0.564 m

Hope this helps :)
7 0
3 years ago
Read 2 more answers
Luis is helping his parents paint a border around the walls of a room. He uses a stencil to repeat the same design on each wall
iren [92.7K]

Answer:

Polymerization.

Explanation:

Polymerization can be defined as a type of chemical reaction in which molecules that are relatively small in size chemically combine to form a huge chain of molecules.

Simply stated, polymerization refers to a chemical reaction where two or more smaller molecules react to produce larger molecules of the same network or repetitive structural units.

In polymerization, the relatively small molecules are generally referred to as monomers while the larger molecules they produce are known as polymers.

Polymerization is given by the chemical formula;

nA -----> A(n).

In this scenario, Luis uses a stencil to repeat the same design on each wall to form one long grapevine with a bunch of grapes every foot along its length.

Hence, the type of chemical reaction this best model is polymerization because it involved repeating the same design (monomers) to form a long grapevine with a bunch of grapes (polymers).

5 0
3 years ago
Other questions:
  • A product advertised on television claims it can "erase skin blemishes and wrinkles in 90 days or your money back." The best way
    9·2 answers
  • How much heat is evolved in converting 1.00 mol of steam at 140.0 ?C to ice at -45.0 ?C? The heat capacity of steam is 2.01 J/(g
    11·1 answer
  • 5 The element sulfur is classified as a<br> (1) metal (3) nonmetal<br> (2) metalloid (4) noble gas
    15·2 answers
  • If a metal donates or loses an electron it becomes a..<br> A. Ionic<br> B. Covalent<br> C. Metallic
    6·2 answers
  • What mass of NO2 can be produced when 678 mL of oxygen at STP and 256 grams of NH3 are mixed together?
    6·1 answer
  • 6
    11·1 answer
  • Why Ethyl amine is more basic than aniline​?
    10·1 answer
  • Directions: Match the terms in Column Il with the definitions in Column / Write the letter of the correct term in
    7·1 answer
  • How do chemicals hurt our environment
    13·2 answers
  • A 75.0-liter canister contains 15.82 moles of argon at a pressure of 546.8 kilopascals. what is the temperature of the canister?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!