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3 years ago

The most familiar elements are typically the most

Chemistry

2 answers:

egoroff_w [7]3 years ago

5 0

Explanation:

The most familiar elements are the ones most abundant in the earth and therefore the most economic ones. Good examples of this elements are oxygen, carbon, nitrogen silicium.

rodikova [14]3 years ago

4 0

-Are the most used in daily life and basic human needs

(such as oxygen,nitrogen,carbon, etc)

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What happens when fats are oxidised?

Mademuasel [1]

Answer:

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they become rancid

Explanation:

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3 years ago

Read 2 more answers

PLEASE PLEASE PLEASE HELP ME

andrey2020 [161]

3. Cl₂ + 2KI --> 2KCl + I₂

Cl = 2 Cl = 2

K = 2 K = 2

I = 2 I = 2

4. 2NaCl --> 2Na + Cl₂

Na = 2 Na = 2

Cl = 2 Cl = 2

5. 4Na + O₂ --> 2Na₂O

Na = 4 Na = 4

O = 2 O = 2

6. 2Na + 2HCl --> H₂ + 2NaCl

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H = 2 H = 2

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3 years ago

According to the following reaction, how many grams of chloric acid (HClO3) are produced in the complete reaction of 31.6 grams

gogolik [260]

Answer:

$m_{HClO_3}=12.7gHClO_3$

Explanation:

Hello,

Considering the reaction:

$3Cl_2(g)+3H_2O(l)-->5HCl+HClO_3$

The molar masses of chlorine and chloric acid are:

$M_{Cl_2}=35.45*2=70.9g/mol\\M_{HClO_3}=1+35.45+16*3=84.45g/mol$

Now, we develop the stoichiometric relationship to find the mass of chloric acid, considering the molar ratio 3:1 between chlorine and chloric acid, as follows:

$m_{HClO_3}=31.6gCl_2*\frac{1molCl_2}{70.9gCl_2} *\frac{1molHClO_3}{3mol Cl_2} *\frac{85.45g HClO_3}{1mol HClO_3} \\m_{HClO_3}=12.7gHClO_3$

Best regards.

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3 years ago

How do solve the uncertainly of a number??

Iteru [2.4K]

Answer:

For example, given a measurement of 14.3 millimeters, plus or minus 5 percent, the relative uncertainty is 5 percent. Multiply the measurement by the relative uncertainty to obtain the absolute uncertainty. In this case, multiply 14.3 millimeters by 5 percent, which equals 0.7 millimeters

Explanation:

this answer is not from google.......

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3 years ago

A liquid in the lab has a density of 1.17 g/cm3. What is the volume in liters of 3.02 kg of the liquid?

Leokris [45]

<u>Answer:</u> The volume of liquid in liters is 2.5812 L.

<u>Explanation:</u>

Density of an object is defined as the ratio of its mass and volume. The chemical equation representing density of an object is:

$\text{Density of an object}=\frac{\text{Mass of an object}}{\text{Volume of an object}}$