CHEMISTRY HIGH SCHOOL

How many oxygen atoms are contained in the following chemical formula? 2agno3 a. 2
b. 3
c. 5
d. 6

Answers

Answer 1
Answer:

It would be: 2*3 = 6 oxygen atoms

OPTION D IS YOUR ANSWER......

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Similarities and differences between the male and female reproductive systems

Answers

Another significant difference is that the female reproductive system produces only one egg per month during a woman's reproducive years. This translates to only several hundred eggs produced during her lifetime. The male reproductive has literally millions of sperm cells available daily, as opposed to a single egg per month.

Final answer:

The male and female reproductive systems have similarities and differences. Both systems have specialized organs involved in reproduction, but they produce different gametes and have different external genitalia. The female system can support the development of a fertilized egg.

Explanation:

SIMILARITIES

The male and female reproductive systems have a common goal of producing offspring. Both systems include specialized organs and structures involved in the process. For example, both have gonads (testes in males and ovaries in females) that produce gametes (sperm in males and eggs in females).

DIFFERENCES

One major difference is the production of different gametes: sperm in males and eggs in females. Another difference is the presence of different external genitalia: male genitalia and scrotum in males and vulva in females. The female reproductive system also has the ability to support the development of a fertilized egg, while the male system does not have this capability.

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A solution of h2so4(aq) with a molal concentration of 6.80 has a density of 1.318 g/ml. what is the molar concentration of this solution?

Answers

The molalconcentration of the solution is 5.38 M.

The molal concentration of sulphuric acid = 6.80 m

The density of the solution = 1.318 g/ml

Mass of the sulphuric acid in the solution is,

= 6.80 * 9.80

=666.4 \: g

The mass of sulphuric acid present in the solution is 666.4 g.

Let the mass of the solvent in which sulphuric acid is dissolved be 1000 grams.

So the total mass of the solution is,

= Mass of solvent + Mass of sulphuric acid

= 666.4 \: + \: 1000

= 1666.4 \: g

The total volume of the solution is,

= (1666.4 * 1)/(1.318 * 1000)

= 1.264 \: L

The volume of the solution is 1.264 liters.

The molal concentration of this solution is,

= (6.80)/(1.264)

= 5.38 \: M

Therefore, the molal concentration of the solution is 5.38 M.

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Neutralization is a reaction between a(n)a. acid and a base.
b. acid and a metal.
c. base and a salt.
d. salt and water.

Answers

When an acidic solution and a basic solution come together, they cancel each other out thus neutralizing. So A is your answer

Im gonna stick with C base and a salt.

What unit is used to express the pressure of a gas?(1) mole (2) joule (3) kelvin (4) pascal

Answers


The answer is a PASCAL!

Earth's first semi-permanent atmosphere consisted of abundant water vapor, carbon dioxide, nitrogen, ammonia, and traces of methane. these gases came from

Answers

organic compounds from the Cambrian era

Balance the following equation. Then determine the mole ratio of Ca(OH)2:Al(OH)3. Al2(SO4)3 + Ca(OH)2 Al(OH)3 + CaSO4

Answers

To balance the reaction, we look at the number of atoms of each element we have. It should be equal for both sides. The balanced reaction is:

Al2(SO4)3 + 3Ca(OH)2 =  2Al(OH)3 + 3CaSO4

The ratio of calcium hydroxide and aluminum hydroxide is 3:2.

Answer: The mole ratio of Ca(OH)_2:Al(OH)_3 is 3 : 2

Explanation:

Law of conservation of mass states that mass can neither be created nor be destroyed, but it can only be transformed from one form to another. In a chemical reaction, total number of individual atoms on reactant side must be equal to the total number of individual atoms on the product side.

All the balanced chemical equation follows law of conservation of mass.

The balanced chemical equation for the combination of aluminium sulfate with calcium hydroxide is:

Al_2(SO_4)_3+3Ca(OH)_2\rightarrow 2Al(OH)_3+3CaSO_4

Mole ratio of any two compounds is basically the ratio of their stoichiometric coefficients.

Hence, the mole ratio of Ca(OH)_2:Al(OH)_3 is 3 : 2
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