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adell [148]
3 years ago
12

When heated, magnesium combines readily with excess oxygen in the air to produce magnesium oxide, as shown in the following unba

lanced equation.
Mg (s) + O2 (g) → MgO (s) + heat

What two types of reactions could this chemical equation be classified as?
Chemistry
1 answer:
aev [14]3 years ago
4 0

<u>Answer:</u> The given chemical reaction can be classified as synthesis and exothermic.

<u>Explanation:</u>

A synthesis reaction is defined as the reaction where two small chemical species combine in their elemental state to form a single large chemical species.

Exothermic reactions are defined as the reactions in which heat is released by the reaction. The heat is written on the product side of the reaction.

For the given chemical reaction:

Mg(s)+O_2(g)\rightarrow MgO(s)+\text{heat}

The above chemical reaction is a type of synthesis and exothermic as two substances in their elemental state are combining. Also, heat is getting released in the reaction.

Hence, the given chemical reaction can be classified as synthesis and exothermic.

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True or false water readily dissolves most polar compounds
morpeh [17]
The answer is false, I hope this helps.
3 0
4 years ago
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With circulation, the heart provides your body with:
Ivanshal [37]
<h3>Answer:  D) all of the above</h3>

Explanation:

The lungs pump oxygen in and carbon dioxide out, which goes through the blood stream to help with the cell's energy needs.

Nutrients pass through the blood stream as well. The nutrients start with the digestive system (mouth, esophagus, stomach, small intestine) before going into the blood stream. The nutrients are building blocks to help make new cells when old ones die off.

When those cells die off, the body sheds them like dead skin, but internal dead cells are passed off as waste. This waste and other byproducts the body doesn't need passes through the blood stream as well.

In short, the blood stream is basically the highway to help get desired materials (eg: oxygen and nutrients) and get rid of waste (eg: carbon dioxide and other unwanted byproducts or dead cell material)

So that's why the answer includes A, B and C.

8 0
3 years ago
A molar solution is a solution that contains one mole of solute in​
BartSMP [9]

Answer:

1 liter of the solution

Explanation:

  • Molarity or concentration of a solution refers to the number of moles of solute contained in a volume of 1 liter or 1 dm³ solution.
  • Therefore, the concentration of a solution is calculated by dividing the number of moles of a solute by the volume of the solution.
  • Concentration is given in mol/L or mol/dm³.
  • Hence, a molar solution is a solution that contains 1 mole of a solute in 1 liter of the solution. This is equivalent to 1M or 1 mol/L.
7 0
4 years ago
PLEASE HELP!! WILL MARK BRAINLIEST AND THANK YOU!!!
Pepsi [2]

Answer:8

Everything after the decimal place is a significant figure here

5 0
4 years ago
2C4H10+13O2--&gt;8CO2+10H2O Using the predicted and balanced equation, How many Liters of CO2 can be produced from 150 grams of
Anna11 [10]

Answer:  233 L of CO_2 will be produced from 150 grams of  C_4H_{10}

Explanation:

To calculate the moles :

\text{Moles of solute}=\frac{\text{given mass}}{\text{Molar Mass}}  \text{Moles of} C_4H_{10}=\frac{150g}{58g/mol}=2.59moles

The balanced chemical equation is:

2C_4H_{10}+13O_2(g)\rightarrow 8CO_2+10H_2O  

According to stoichiometry :

2 moles of C_4H_{10} produce =  8 moles of CO_2

Thus 2.59 moles of C_4H_{10} will produce=\frac{8}{2}\times 2.59=10.4moles  of CO_2  

Volume of CO_2=moles\times {\text {Molar volume}}=10.4moles\times 22.4mol/L=233L

Thus 233 L of CO_2 will be produced from 150 grams of  C_4H_{10}

8 0
4 years ago
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