3 years ago

First answer will be brainliest!!

Chemistry

1 answer:

igomit [66]3 years ago

8 0

I think it is rarefaction. But im not sure

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An atom X has atomic number 15,it accepts 3 electrons in other to become stable,determine the,*Number of protons of the atom. *D

Lisa [10]

Answer:

15 protons

8 electrons in valence shell after accepting 3 electrons

Neutral/no charge before accepting 3 electrons

-3 charge after accepting 3 electrons

4 0

2 years ago

2. Calculating density of an object with a regular shape

Tatiana [17]

D= 0.10125kg/m^3

EXPLAINATION
Density =mass/volume
D= 226.8/20 x 8 x 14
D=226.8/2240
D= 0.10125kg/m^3
Hope it was helpfull!!

6 0

3 years ago

The cycle of copper reactions starts with solid copper metal and ends with solid copper metal. Suppose you start with 0.502 g of

Marianna [84]

Answer: percentage of the copper recovered is 88.8 %

Explanation:

Given : Initial amount of copper = 0.502 g

Recovered amount of copper = 0.446 g

percentage of copper recovered = $\frac{\text {recovered amount}}{\text {initial amount}}\times 100\%$

Putting in the values :

percentage of copper recovered = $\frac{0.446}{0.502}\times 100\%=88.8\%$

Thus percentage of the copper recovered is 88.8 %

7 0

3 years ago

How many atoms are in one mole of barium ?

algol13

Answer:

3 atoms

Explanation:

"In one mole of Barium, there are 3 x $N_{A}$ barium and chlorine atoms, where $N_{A}$ is Avagadro's Number, 6.022 x $10^{23}$ " - anor277 via Socratic

7 0

3 years ago

1. If a cell has waste it needs to store, it will store it:

AlekseyPX

It will store it in the vacuole :)

8 0

3 years ago