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
kherson [118]
2 years ago
5

Part B

Chemistry
1 answer:
Y_Kistochka [10]2 years ago
4 0

Answer:

1. conduction

2. Convection

3. Radiation

You might be interested in
When benzoic acid (C6H5COOH) and magnesium hydroxide are mixed, water and magnesium benzoate are produced​
Pachacha [2.7K]

Acid , H2O2= acid/h2o2

8 0
3 years ago
6th grade science i will give brainliest
Alexandra [31]
0.2 m/s! keep in mind, speed= distance divided by time :D
7 0
2 years ago
List the number of protons, neutrons, and electrons in....( there is a pic)
notsponge [240]
There are 6 protons, 7 neutrons, and 6 electrons since the atomic mass is rounded to 13.
3 0
2 years ago
Since the half-life of 235U (7. 13 x 108 years) is less than that of 238U (4.51 x 109 years), the isotopic abundance of 235U has
Ymorist [56]

Answer:

\mathtt{ t_1-t_2= In(\dfrac{3}{y}) \times \dfrac{7.13 \times 10^8}{In2} \ years}

Explanation:

Given that:

The Half-life of ^{235}U = 7.13 \times 10^8 \ years is less than that of ^{238} U = 4.51 \times 10^9 \ years

Although we are not given any value about the present weight of ^{235}U.

So, consider the present weight in the percentage of ^{235}U to be  y%

Then, the time elapsed to get the present weight of ^{235}U = t_1

Therefore;

N_1 = N_o e^{-\lambda \ t_1}

here;

N_1 = Number of radioactive atoms relating to the weight of y of ^{235}U

Thus:

In( \dfrac{N_1}{N_o}) = - \lambda t_1

In( \dfrac{N_o}{N_1}) =  \lambda t_1 --- (1)

However, Suppose the time elapsed from the initial stage to arrive at the weight of the percentage of ^{235}U to be = t_2

Then:

In( \dfrac{N_o}{N_2}) =  \lambda t_2  ---- (2)

here;

N_2 =  Number of radioactive atoms of ^{235}U relating to 3.0 a/o weight

Now, equating  equation (1) and (2) together, we have:

In( \dfrac{N_o}{N_1}) -In( \dfrac{N_o}{N_2}) =  \lambda( t_1-t_2)

replacing the half-life of ^{235}U = 7.13 \times 10^8 \ years

In( \dfrac{N_2}{N_1})  = \dfrac{In 2}{7.13 \times 10^9}( t_1-t_2)      ( since \lambda = \dfrac{In 2}{t_{1/2}} )

∴

\mathtt{In(\dfrac{3}{y}) \times \dfrac{7.13 \times 10^8}{In2}= t_1-t_2}

The time elapsed signifies how long the isotopic abundance of 235U equal to 3.0 a/o

Thus, The time elapsed is  \mathtt{ t_1-t_2= In(\dfrac{3}{y}) \times \dfrac{7.13 \times 10^8}{In2} \ years}

8 0
3 years ago
Determine the molar mass of CaO
Umnica [9.8K]
56.0774 g/mol just took the test
5 0
3 years ago
Other questions:
  • In the following reaction, which species is reduced? 2k+br2 yield 2k+ + 2br-
    12·1 answer
  • In creating a covalent bond, it would be best to bind sulfur to:
    12·2 answers
  • F. How many centigrams are in 253,000 picograms?<br> Plz show work
    6·1 answer
  • What is the structural formula for 2-methyl 3-ethylbutane?
    6·1 answer
  • I need help solving this!!!
    8·1 answer
  • Balance the chemical equation. Based on the equation, how many grams of chlorine are produced when the sodium chloride decompose
    6·2 answers
  • Under what conditions will a gas NOT obey Boyle's law ? There can be more than one correct answer.
    14·1 answer
  • What volume of 0.20 M NaCl contains 10.0 g
    6·1 answer
  • Atoms of which of the following elements have the smallest atomic radius?
    8·1 answer
  • If acid comes in contact with your skin, why must you flush the area with plenty of cold water, rather than neutralizing the aci
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!