3 years ago

"what are the half lives for uranium-235 and uranium-238?"

Chemistry

1 answer:

lilavasa [31]3 years ago

7 0

Uranium-238 - 4.46 billion years
Uranium-235 - 704 million years

You might be interested in

state whether the following changes are physical or chemical for rancidipication fixation of water 2 tearing of paper 3 rusting

Artist 52 [7]

1. rancidification fixation of water is CHEMICAL CHANGE

2. Tearing of paper is PHYSICAL CHANGE

3. Rusting if iron is CHEMICAL CHANGE

4. Electrolysis of water is CHEMICAL CHANGE

5 0

3 years ago

What is the difference between a gas and a solid

Yuliya22 [10]

A gas can move around freely while a solid is hard and can’t move around freely

7 0

2 years ago

Read 2 more answers

Calculate the pOH of a solution if the concentration of hydroxide ions (OH-) is 1.9 x 10-5M?

OLEGan [10]

Answer:

9.28

Explanation:

pOH refers to a measure of hydroxide ions concentration. pOH tells about the alkalinity of a solution. If pOH is less than 7 then aqueous solutions are alkaline, acidic if pOH is greater than 7 and neutral if pOH is equal to 7.

Concentration of the hydroxide ions = 1.9 x 10-5 M

pH = $-log(1.9\times 10^{-5})=4.72$

pOH = 14 - pH

=14 - 4.72 = 9.28

6 0

3 years ago

Compare and contrast an earthquake and a tsunami. Include one way they are similar and two ways they are different.

Anon25 [30]

One way they are similar is because an earthquake causes a tsunami so they are connected. two ways they are not is because ones dealing with water and ones dealing with land, and an earthquake is very sudden while a tsunami, you know its coming and you have time to move.

6 0

3 years ago

Read 2 more answers

At stp what is the volume of 5.35 moles of methane ch4

Nookie1986 [14]

Answer:

22.4 L

Explanation:

8 0

2 years ago