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Flauer [41]
3 years ago
14

PLS HELP THIS IS ACTUALLY SCIENCE

Chemistry
2 answers:
Alekssandra [29.7K]3 years ago
5 0

Answer:

Death rates, Birth rates, and immigration rates

Explanation:

zvonat [6]3 years ago
4 0

Answer: Well there is...

Explanation: Plants that provide oxygen, plants that provide food, and peace in the world.

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What type of bonding is found in the compound of2?
Ratling [72]

Answer:

chemical bond

Explanation:

because atom can join together by forming a chemical bond

7 0
3 years ago
What is the mass of 5.84 × 10^21 atoms of xenon?
podryga [215]

Answer:

5.84e+21

Explanation:

8 0
3 years ago
A lead sphere has a mass of 1.20 x 104 g, and its volume is 1.05 x 103 cm^3. Calculate the density of lead.
Hatshy [7]

Answer: The density of lead will be 11.42g/cm^3

Explanation:

Density is defined as the mass contained per unit volume.

Density=\frac{mass}{Volume}

Given : Mass of lead=1.20\times 10^4g

Volume of lead =1.05\times 10^3cm^3

Putting in the values we get:

Density=\frac{1.20\times 10^4}{1.05\times 10^3}=11.42g/cm^3

Thus density of lead will be 11.42g/cm^3

4 0
3 years ago
Krupton (Kr) is a <br><br>A. Gas<br>B. Metal<br>C. Non of these<br>D. Metalloid​
Katarina [22]
B is gas


The chemical element krypton is classed as a noble gas and a nonmetal.







Love you
3 0
3 years ago
If an isotope of an element has 40 neutrons and a mass number of 79, how many electrons must it have?
34kurt

Answer: 39 electrons

Explanation: Subtract 79 by 40 to get the atomic number (amount of protons) which is 39. The number of electrons must be the same as the number of protons if it's not an ionic compound so the amount of electrons is the same amount of protons.

5 0
3 years ago
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