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hoa [83]
3 years ago
14

Use the periodic table from the lesson to answer the following question.

Chemistry
1 answer:
jok3333 [9.3K]3 years ago
3 0

Answer:

19

Explanation:

The number below the element Fluorine is 18.99 which rounds to 19.

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Write the complete balanced equation for the following reaction:
Assoli18 [71]

Explanation:

An equation that consists of same number of atoms on both reactant and product side is known as a balanced chemical equation.

For example, C_{7}H_{6}O + O_{2} \rightarrow CO_{2} + H_{2}O

Number of atoms on reactant side are as follows.

C = 7

H = 6

O = 3

Number of atoms on product side are as follows.

C = 1

H = 2

O = 3

Therefore, to balance this chemical equation we multiply O_{2} by 8 on reactant side. Whereas we multiply CO_{2} by 7 and H_{2}O by 3 on product side.

Therefore, the balanced chemical equation will be as follows.

          C_{7}H_{6}O + 8O_{2} \rightarrow 7CO_{2} + 3H_{2}O

6 0
4 years ago
The mass of a person on the moon is________
egoroff_w [7]

Answer:

b I'm sorry if its not true

8 0
3 years ago
Read 2 more answers
Give the nuclide symbol for an atom that has<br> mass number 64 and 35 neutrons.
azamat
The mass number represents the summation of the number of protons and the number of neutrons in the nucleus of an atom.
We are given that the mass number is 64 and that the number of neutrons is 35. Therefore:
number of protons = 64 - 35 = 29 protons

In ground state, number of protons in an atom is equal to the number of electrons. Therefore,
number of electrons = 29 electron

Using the periodic table, we will find that the element that has 29 electrons in ground state is copper.
The nuclide symbol of copper is shown in the attached image.

5 0
4 years ago
What type of energy is the sum of kinetic and potetinal energy in an object that is used to do work
wolverine [178]

Answer:

mechanical energy

Explanation:

6 0
3 years ago
How many atoms are in 6.3 moles of calcium
KIM [24]
1 mol --------- 6.02x10²³ atoms
6.3 moles ---- ??

atoms = 6.3 * 6.02x10²³

= 3.7926x10²⁴ atoms

hope this helps!
6 0
3 years ago
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