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3 years ago

A fluorine ion has 9 protons and a charge of negative one how many electrons are in an ion of fluorine

Chemistry

1 answer:

Ulleksa [173]3 years ago

6 0

-1 charge = the atom has gained one electron

9+1=10

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An average bushel of apples has a mass of 10 kg and contains 5 dozen apples.

Alina [70]

Answer:

Average mass of 6 apple = 1 kg

Explanation:

Given:

Average mass of 5 dozen apple = 10 kg

Find:

Average mass of 6 apple

Computation:

Average mass of 6 apple = [Average mass of 1 apple] x [6 apple]

Average mass of 6 apple = [10/(12 x 5)] x [6]

Average mass of 6 apple = 1 kg

3 0

3 years ago

CaC12 * 3H20 is correctly named

ki77a [65]

Answer:

calcium chloride deihydrate

4 0

3 years ago

A 32.5 g iron rod, initially at 22.4 ∘C, is submerged into an unknown mass of water at 63.0 ∘C, in an insulated container. The f

a_sh-v [17]

Answer:

$m_{H_2O}=39.0g$

Explanation:

Hello,

In this case, is possible to infer that the thermal equilibrium is governed by the following relationship:

$\Delta H_{iron}=-\Delta H_{H_2O}\\m_{iron}Cp_{iron}(T_{eq}-T_{iron})=-m_{H_2O}Cp_{H_2O}(T_{eq}-T_{H_2O})$

Thus, both iron's and water's heat capacities are: 0.444 and 4.18 J/g°C respectively, so one solves for the mass of water as shown below:

$m_{H_2O}=\frac{m_{iron}Cp_{iron}(T_{eq}-T_{iron})}{-Cp_{H_2O}(T_{eq}-T_{H_2O}} \\\\m_{H_2O}=\frac{32.5g*0.444\frac{J}{g^0C}*(59.7-22.4)^0C}{-4.18\frac{J}{g^0C}*(59.7-63.0)^0C} \\\\m_{H_2O}=39.0g$

Best regards.

8 0

3 years ago

If the mass of the products measured 120g what would the mass of the reactants

Ket [755]

It has to be 120g because each and every chemical equation has to satisfy the law of conservation of mass, ie sum of mass of products is always equal to the sum of masses of reactants. If reactants=120g, then products=120g

5 0

3 years ago

What is Molecular mass?

MArishka [77]

Answer:

Molecular mass is the amount of mass associated with a molecule. It is also called as molecular weight. It can be calculated by adding the mass of each atom multiplied by the number of atoms of the element present in the molecule. For example, water is made up of 2 hydrogen atoms and 1 oxygen atom.

Explanation:

7 0

3 years ago

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