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IrinaVladis [17]
2 years ago
5

Hazmat Poison gas is in what class?

Chemistry
2 answers:
Alik [6]2 years ago
8 0

HAZMAT Class 6 Toxic and infectious substances.

Lunna [17]2 years ago
8 0

Answer:

CLASS 2 Gases

Explanation:

Hope this helps

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0.2 moles

Explanation:

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Lithium, sodium and potassium all belong to the same group of the periodic table.
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Yes they are found in same period

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Isotope Atomic Mass (amu) Percent Abundance
exis [7]

Answer:

The average atomic mass is closer to Si- 28 because this isotope is present in more percentage in the sample.

Explanation:

Given data:

Atomic mass of silicon= ?

Percent abundance of Si-28 = 92.21%

Atomic mass of Si-28 = 27.98 amu

Percent abundance of Si-29 = 4.70%

Atomic mass of  Si-29 = 28.98 amu

Percent abundance of Si-30 = 3.09%

Atomic mass of  Si-30 = 29.97 amu

Solution:

Average atomic mass = (abundance of 1st isotope × its atomic mass) +(abundance of 2nd isotope × its atomic mass)+(abundance of 2nd isotope × its atomic mass)  / 100

Average atomic mass = (92.21×27.98)+(4.70×28.98)+(3.09×29.97) /100

Average atomic mass =  2580.04 +136.21+92.61 / 100

Average atomic mass = 2808.86 / 100

Average atomic mass  = 28.08amu.

The average atomic mass is closer to Si- 28 because this isotope is present in more percentage in the sample.

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Begin by writing formulas for the reactants and products, including physical states. When necessary use coefficients to balance
xz_007 [3.2K]

Answer:

NaH(s) + H2O(l) ------> NaOH(aq) + H2(g)

2Al(s) + 3Cl2(g) -----> 2AlCl3(s)

Explanation:

The rule of thumb in balancing chemical reaction equation is that the number of atoms of each element on the reactant side must be the same as the number of atoms of the same element on the product side. Only then can any reaction equation be seen as balanced.

For example there are two aluminum atoms on both sides of the reaction equation and six chlorine atoms on both sides of the reaction equation. Hence the reaction equation is balanced.

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3 years ago
The function of the cilia and flagella are:
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The last one, to swim

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The function of cilia and flagella move liquid past the surface of the cell. For single cells, such as sperm, this enables them to swim. For cells anchored in a tissue, like the epithelial cells lining our air passages, this moves liquid over the surface of the cell (e.g., driving particle-laden mucus toward the throat).

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3 years ago
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