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
Lunna [17]
2 years ago
14

How is a convection current created.

Chemistry
1 answer:
barxatty [35]2 years ago
7 0

Answer:

it is created by movement of molecules with higher energy upwards and the movement of molecules with lower energy downwards

Explanation:

please rate brainliest if I deserve

You might be interested in
Help someone!!!I will mark you brainliest
iVinArrow [24]
A) Na2S
b) AlF3
c) O2
d) C6H12O6
4 0
2 years ago
Read 2 more answers
How long will it take for a 750 mg sample of radium with a half life of 15 days to decay to exactly 68mg?
weqwewe [10]

Answer:

52 da  

Step-by-step explanation:

Whenever a question asks you, "How long to reach a certain concentration?" or something similar, you must use the appropriate integrated rate law expression.

The i<em>ntegrated rate law for a first-order reaction </em>is  

ln([A₀]/[A] ) = kt

Data:

[A]₀ = 750 mg

 [A] =    68 mg

t_ ½ =   15 da

Step 1. Calculate the value of the rate constant.

 t_½ = ln2/k     Multiply each side by k

kt_½ = ln2         Divide each side by t_½

      k = ln2/t_½

         = ln2/15

         = 0.0462 da⁻¹

Step 2. Calculate the time

ln(750/68) = 0.0462t

         ln11.0 = 0.0462t

            2.40 = 0.0462t     Divide each side by 0.0462

                   t = 52 da

8 0
3 years ago
Which of the following best describes where cellular respiration occurs?
Illusion [34]

Answer:

In every body cell

Explanation:

4 0
3 years ago
Read 2 more answers
A chunk of copper has a volume of 1.45 mL and a mass of 12.93 grams. What is the density of the chunk of copper?
natta225 [31]

Answer:

Density = 8.92 \ g/mL

Explanation:

The equation for density is:

Density = \frac{mass}{volume}

We plug in the given values:

Density = \frac{12.93 \ g}{1.45 \ mL}

Density = 8.92 \ g/mL

7 0
2 years ago
Read 2 more answers
6. A quiet sound exerts a pressure of 4.00 x 10^-8 kPa (kPa= kilopascals, a pressure unit). What is this pressure measured in at
Radda [10]

Answer:

GOOGLE MY HUMAN

Explanation:

GOOGLE!!!!!

3 0
2 years ago
Other questions:
  • Would a block of mass of 32 g the leisure 3 cm in all directions float or sink in water
    9·1 answer
  • A student has a solution with a pH of 7. The student adds HF, hydrogen floride, to the solution, hoping to increases the pH of t
    12·1 answer
  • Potassium-40 has a half-life of 1.3 billion years. as the potassium-40 isotope decays, it becomes argon. if a rock was formed wi
    11·2 answers
  • How many atoms of carbon2C4H10 + 13O2 → 8CO2 + 10H2O have?
    8·1 answer
  • Y = 4x - 11 and y = -4x + 5*
    14·1 answer
  • Cobalt-60 is a radioactive isotope used to treat cancers. A gamma ray emitted by this isotope has an energy of 1.33 MeV (million
    15·1 answer
  • In an exothermic reaction, the water will _______ in a calorimeter. A. release heat B. drop in temperature C. drop in volume D.
    6·2 answers
  • Plz answer this fast... will mark ur answer as brainliest
    10·2 answers
  • Mass x height x gravity is the formula to calculate:
    7·1 answer
  • The delocalized cloud of π electrons in benzene is formed by the overlap of 6 ________ orbitals.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!