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vovikov84 [41]
3 years ago
11

Which two radioisotopes have the same decay mode?

Chemistry
1 answer:
ki77a [65]3 years ago
5 0

Answer:

c

Explanation:

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Question 1: Express the following out of scientific
sasho [114]

Expanding the following out of scientific notation gives:

1. 1.5×10^{5} cm= 15000cm

2. 2.7×10^{-3} cm= 0.0027cm

Numbers that are either too large or too little to be conveniently stated in decimal form can be expressed using scientific notation. It is also known as standard form in the UK and scientific form, standard index form, and standard form.

Using scientific notation, one can express extremely big or extremely small values. When a number between 1 and 10 is multiplied by a power of 10, the result is represented in scientific notation.

So, the expanded forms are;

1. 1.5×10^{5} cm= 15000cm

2. 2.7×10^{-3} cm= 0.0027cm

Learn more about scientific notation here;

brainly.com/question/18073768

#SPJ9

8 0
2 years ago
Some facts or characteristics of endoplasmic reticulum
Wittaler [7]
Facts:
It is also concerned with the transport of proteins and lipids within the cell.
Rough ER has ribosomes attached to its surface; proteins synthesized on the ribosomes are enclosed in vesicles and transported to the Golgi Apparatus.
8 0
4 years ago
How many atoms of gold are in a pure gold coin weighing 12.0g?
grigory [225]
12.0g x 1 mol / 63.546g = 0.188839581mol 

<span>So, for every 1 mole, we have 6.022 x 10^23 of whatever we're measuring. This gives us a conversion factor of (1 mole / 6.022 x 10^23 atoms) or (6.022 x 10^23 atoms / 1 mole).
</span>
0.188839581 mol x (6.022 x 10^23 atoms) / 1 mol = 1.137191955 x 10^23 

<span>Remember from before that we are limited to 3 significant figures. Since our calculations are complete, we can now round down to: 1.14 x 10^23 </span>

<span>That should be your answer!

Hope it helps!
xo</span>
3 0
3 years ago
What is the kinetic energy of a 3kg ball that is rolling at 2 meters per second
marissa [1.9K]

Answer:

<h2>6 J</h2>

Explanation:

The kinetic energy of an object can be found by using the formula

k =  \frac{1}{2} m {v}^{2}  \\

m is the mass

v is the velocity

From the question we have

k =  \frac{1}{2}  \times 3 \times  {2}^{2}  \\  =  \frac{1}{2}  \times 3 \times 4 \\  = 3 \times 2

We have the final answer as

<h3>6 J</h3>

Hope this helps you

7 0
3 years ago
Hey how's ur friday going yall im bacc in school now so yay!
Naily [24]
My Friday is going good and I might get to go over to my BFF house!!!
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