All categories

3 years ago

What are the 4 properties of the atom?

Chemistry

1 answer:

Delvig [45]3 years ago

6 0

Answer:

Typical sizes of atom and nucleus.

Most of atom's mass is in the nucleus.

Constituents: protons, neutrons, electrons.

Electric force holds atom together.

Explanation:

You might be interested in

Which of these are broken down during chemical,but not physical,changes

KIM [24]

Which of these what?

This isn't clear, can you put the answer choice or something?

7 0

3 years ago

Pleasee help me I really need an answer help

Juliette [100K]

Answer:

This is hard for me also but I am trying to find out answer

Explanation:

Please mark me as brainlist.

6 0

3 years ago

Energy transformations are constantly taking place. <br><br><br> True or False

DaniilM [7]

The statement is : True

-Hope thi helps.

3 0

3 years ago

Read 2 more answers

Which of the following best defines base isolation?(1 point)

jekas [21]

Base isolation is a method of earthquake resistant engineering where a structure is separated from the ground by isolation units that reduces the impact of seismic vibration energy. So, the last answer choice would be the best definition.

3 0

3 years ago

The decomposition of dinitrogen pentoxide, N2O5, to NO2 and O2 is a first-order reaction. At 60°C, the rate constant is 2.8 × 10

Ugo [173]

Answer:

The correct option is a.

Explanation:

$2N_2O_5\rightarrow 4NO_2 + O_2$

125 kPa

125kpa - 2x 4x x

Total pressure after reaction = 176 kPa

125 kPa - 2x + 4x + x = 176 kPa

x = 17

125 kpa - 2x = 125 kPa - 2(17) = 91 kPa

Initial pressure of the dinitrogen pentoxide ,(at t=0) = $P_o= 125 kPa$

Final pressure of the dinitrogen pentoxide, (at t = t) = P = 91 kPa

The rate constant is = $k = 2.8\times 10^{-3} min^{-1}$

$t=\frac{2.303}{k}\log\frac{P_o}{P}$

$t=\frac{2.303}{2.8\times 10^{-3} min^{-1}}\log\frac{125 kPa}{91 kPa}$

$t=113.3969 minutes\approx 113 minutes$

It will take 113 minutes for the total pressure to reach 176 kPa.

8 0

3 years ago