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3 years ago

The following flow diagram shows the various steps of elimination of waste through urine. There is an error in one of the steps.

Chemistry

2 answers:

CaHeK987 [17]3 years ago

7 0

Answer:

The answer is A: step one should be urine flows from the kidneys to the ureters.

Explanation:

Ilia_Sergeevich [38]3 years ago

3 0

Answer:

hello pa point lang po

Explanation:

sorry

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How many moles of hydrogen gas are needed to produce 20 grams of hydrochloric acid (HCl)?

Charra [1.4K]

Answer:

0.27 mole

Explanation:

Data given:

mass of hydrochloric acid (HCl) = 20 g

moles of hydrogen (H₂O) = ?

Solution:

First we look to the reaction in which hydrogen react with Chlorine and make hydrochloric acid (HCl)

Reaction:

H₂ + Cl₂ -----------> 2HCl

Now look at the reaction for mole ratio

H₂ + Cl₂ -----------> 2HCl

1 mole 2 mole

So it is 1:2 mole ratio of hydrogen to hydrochloric acid (HCl)

As we Know

molar mass of H₂ = 2(1) = 2 g/mol

molar mass of HCl = 1 + 35.5 = 36.5 g/mol

Now convert moles to gram

H₂ + Cl₂ -----------> 2HCl

1 mole (2 g/mol) 2 mole (36.5 g/mol)

2 g 73 g

So,

we come to know that 2 g of hydrogen gives 73 g of hydrochloric acid (HCl) then how many grams of hydrogen will be required to produce 20 grams of hydrochloric acid (HCl).

Apply unity formula

2 g of H₂ ≅ 73 g of HCl

X g of H₂ ≅ 20 g of HCl

Do cross multiplication

X of H₂ = 2 g x 20 g / 73 g

X of H₂ = 0.55 g

Now convert grams of H₂ into moles

No. of moles = mass in grams/molar mass

Put values in above formula

No. of moles = 0.55 g / 2 (g/mol)

No. of moles = 0.27 mol

0.27 mole of hydrogen needed to produce 20 gram of hydrochloric acid (HCl).

7 0

3 years ago

Please help will give brainliest _______________________________________________________________________________________________

bogdanovich [222]

Answer:

What subject is this for?

Explanation:

4 0

3 years ago

If lon X has a charge of 2+ and lon Y has a charge of 1-, the chemical the formula of the ionic

Monica [59]

The chemical formula of the ionic compound is XY₂.

<h3>Ionic compounds</h3>

Ionic compounds are compounds which are formed from the combination of negatively charged and positively charged ion.
Positively charged ions are formed by loss of electrons
Negatively-charged ions are formed from gain of electrons

<h3>Formation of ionic compounds</h3>

During the formation of the ionic compound between an ion X that has a charge of 2+ and ion Y has a charge of 1-, two negatively charged ions of Y are required to form a neutral ionic ionic compound when they react with X.

The chemical the formula of the ionic compound they form is as follows;

X²⁺ + 2Y⁻ ---> XY₂

Therefore, the chemical formula of the ionic compound is XY₂.

Learn more about ionic compounds at: brainly.com/question/13439771

7 0

2 years ago

PLEASE HELP IT'S URGENT

yuradex [85]

Answer:

Explanation:

4 0

3 years ago

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Drag the tiles to the correct boxes. Not all tiles will be used. The oxidation number of oxygen is -2, and that of chlorine is -

Evgen [1.6K]

<u>Answer:</u>

<em>That oxidation number of chlorine is -1 while that of oxygen is -2</em>

<u>Explanation:</u>

When it comes to manganese chloride to stabilize the chlorine Ion. Two manganese ions shall be required. Hence the formula for the compound becomes $M_nCl_2$ while the formula for manganese (iv) chloride will be $M_nCl_4$ similarly.

When oxygen and magnesium oxide is considered the Two ions of Manganese will satisfy to ions of oxygen. Which cancels and becomes $M_nO$ while for manganese (iv) oxide the formula becomes $M_nO_2$ .

5 0

3 years ago

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