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worty [1.4K]
3 years ago
13

When adding and fractions (1/3)+(-2/5) what must you first do

Chemistry
1 answer:
frozen [14]3 years ago
5 0
You must first get a common denominator by multiplying (1/3) by 5 and (-2/5) by 3 to get the equation (5/15)+(-10/15)= -5/15 which can be simplified to 1/3.

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Fofino [41]

Answer:

It is A. Because charged particles of solar wind ignite different gases in Earth's atmosphere.

Explanation:

Since the solar wind from the sun is too radioactive for humans (they would die), once the charged particles hit the earth's atmosphere it shows its color. Every element has its own color and once it hits the atmosphere it really starts to show.

6 0
3 years ago
state the conditions under which copper reacts with sulphuric (vi) acid and give an equation for the reaction​
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Answer:

When the metal reacts with hot, concentrated sulphuric acid, the products of the reaction are copper (II) sulphate, sulphur dioxide and water. Cu + 2H2SO4 = CuSO4 + SO2 + 2H2O. This is a typical redox reaction in which the acid is reduced to SO2, but no hydrogen is produced here

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3 years ago
Select the appropriate words to fill in the blanks. A solution in which no more solute can be dissolved in is referred to as ___
Temka [501]

Answer:

A solution in which no more solute can be dissolved in is referred to as SATURATED. In such a solution, the concentration of solute is called SOLUBILITY . When that concentration is reported in moles per liter, it is more specifically called MOLAR SOLUBILITY. A special equilibrium constant called the SOLUBILITY PRODUCT constant is calculated from the molar concentrations of the aqueous components of the dissolution equation.

Explanation:

The solubility of a solute in a solvent is the maximum amount of solute in moles that will be dissolved in 1dm3 of the solvent at a specified temperature. Once the maximum number or concentration has been reached, the solvent can no longer take in solutes and this point in the reaction, the solution is said to be saturated. That is the composition of the saturated solution is not affected by the presence of excess solute. An unsaturated solution has a lower concentration of solute and can dissolve more solutes if added until it becomes saturated.

Solubility when reported in moles per liter is called molar solubility of the solution and it gives a more accurate measurement of yh solubility of a solution. The solubility product constant is calculated from the molar concentrations of the aqueous components of the dissolution equation. This solubility product constant explains the balance between dissolved ions from the salt and undissolved salt in a dissolution equation.

3 0
4 years ago
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guys im morgz im going to put a nail on the seat in my mom room and im going to see how up her a- s s it will go lets see
vagabundo [1.1K]

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6 0
3 years ago
Someone answer these both for me
Julli [10]

Answer:

a b

Explanation:

I think so take it with a grain of salt

4 0
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