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svlad2 [7]
3 years ago
12

What is the charge on an ion that contains 16 protons and 18 electrons?

Chemistry
1 answer:
Alika [10]3 years ago
6 0
16-18= -2 so it has a negative charge. Just subtract the electrons from the protons if you get a positive number it will have a positive charge and vice versa.

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Need help asap!!!!! Plz
Nostrana [21]

Answer:

153.8 g/mol.

Explanation:

The molar mass of a compound = ∑ atomic masses of atoms.

<em>∴ The molar mass of CCl₄ = 1(atomic masss of C) + 4 (atomic mass of Cl) </em>= (12.0 g/mol) + 4 (35.45 g/mol) = <em>153.8 g/mol.</em>

6 0
3 years ago
What does an increase in temperature do to the reaction rate?
Goshia [24]

Answer:

An increase in temperature typically increases the rate of reaction because an increase in temperature will raise the average kinetic energy of the reactant molecules. Therefore, a greater proportion of molecules will have the minimum energy necessary for an effective collision.Increasing the temperature increases reaction rates because of the disproportionately large increase in the number of high energy collisions. It is only these collisions (possessing at least the activation energy for the reaction) which result in a reaction.

Explanation:

Can you please give this answer a brainliest answer please

8 0
3 years ago
What is the volume of 3.14 M aqueous acid solution that contains 9.25 g of HCLO4
Amanda [17]
The answer is basic
7 0
3 years ago
A medical lab is testing a new anticancer drug on cancer cells. The drug stock solution concentration is 1.5×10−9m, and 1.00 ml
Elis [28]

The concentration of the drug stock solution is 1.5*10^-9 M i.e. 1.5 * 10^-9 moles of the drug per Liter of the solution

Therefore, the number of moles present in 1 ml i.e. 1*10^-3 L of the solution would be =  1 *10^-3 L * 1.5 * 10^-9 moles/1 L = 1.5 * 10^-12 moles

1 mole of the drug will contain 6.023*10^23 drug molecules

Therefore, 1.5*10^-12 moles of the drug will correspond to :

    1.5 * 10^-12 moles * 6.023*10^23 molecules/1 mole = 9.035 * 10^11 molecules

The number of cancer cells = 2.0 * 10^5

Hence the ratio = drug molecules/cancer cells

                          = 9.035 *10^11/2.0 *10^5

                          = 4.5 * 10^6

8 0
3 years ago
Read 2 more answers
Magnesium carbonate decomposition on heating to form magnesium oxide and carbon dioxide. how many grams of magnesium oxide will
KIM [24]
This is how you would do it. set up the rxn. balance, in this case you didn't need to. make a grid and cancel out units.

3 0
3 years ago
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