Please help me! I have a 20 minute time limit so please hurry! 50 points

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Answer 1

Answer: 1 . A
2 . A
3. C
4. C
5. B
should be the answer .

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Which of the following can be caused by geologic plate movements?

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Earthquakes can be an effect of thy movements.

N2(g) + 3 H2(g) ---> 2 HN3(g) (blanced)If 5.42 g of nitrogen are reacted with 5.42 g of hydrogen gas, which of the reactants is the limiting reactant?

Molar Mass of N2 = 28.02 g/mol
Molar Mass of H2 = 2.02 g/mol
Molar Mass of NH3 = 17.04 g/mol

Answers

Answer:

N₂

Explanation:

The limiting reactant is the one that gives the smaller amount of product.

Assemble all the data in one place, with molar masses above the formulas and masses below them.

M_r: 28.02 2.02 17.04

N₂ + 3H₂ ⟶ 2NH₃

m/g: 5.42 5.42

1. Calculate the moles of each reactant

$\text{Moles of N}_(2) = \text{5.42 g} * \frac{\text{1 mol}}{\text{28.02 g}} = \text{0.1934 mol N}_(2)\n\n\text{Moles of H}_(2) = \text{5.42 g} * \frac{\text{1 mol}}{\text{2.02 g}} = \text{2.683 mol H}_(2)$

2. Identify the limiting reactant

Calculate the moles of NH₃ we can obtain from each reactant.

From N₂:

The molar ratio of NH₃:N₂ is 2:1.

$\text{Moles of NH}_(3) = \text{0.1934 mol N}_(2) * \frac{\text{2 mol NH}_(3)}{\text{1 mol N}_(2)} = \text{0.3867 mol NH}_(3)$

From H₂:

The molar ratio of NH₃:H₂ is 3:2.

$\text{Moles of NH}_(3) = \text{2.683 mol H}_(2) * \frac{\text{2 mol NH}_(3)}{\text{3 mol N}_(2)} = \text{1.789 mol NH}_(3)$

N₂ is the limiting reactant, because it gives the smaller amount of NH₃.

Looking at the periodic table, which of these elements has the smallest atomic radius?A. sodium
B. potassium
C. hydrogen
D. lithium

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Answer: C. hydrogen

Explanation:

Atomic radius of an atom is defined as the total distance from the nucleus to the outermost orbital of electron.

On moving from top to bottom, there is an addition of shell around the nucleus and the outermost orbital gets far away from the nucleus and hence, the distance between the nucleus and outermost orbital increases.

This in turn increases the atomic radii of the element from moving top to bottom in a group.

$H:1:1s^1$

$Li:3:1s^22s^1$

$Na:11:1s^22s^22p^63s^1$

$K:19:1s^22s^22p^63s^23p^64s^1$

hydrogen which has 0.79

Use 'organic matter' in a sentence (Does not have to be complex)

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rganic matter or organic material, natural organic matter, NOM is matter composed ofor ganic compounds that has come from the remains of organisms such as plants and animals and their waste products in the environment.

What is the purpose of phosphates in fertilizerwhat is the purpose of phosphates in laundry detergent

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Fertilizers provide soil with nutrients, like phosphate, that are required to produce healthy gardens and abundant crops. The Fertilizer Institute reports that experts estimate one-third of the world's food supply would not be produced without the use of commercial fertilizers....i hope i help u....

Phosphates make the soil fertile, and enrich the soil with phosphorous.

Phosphates are used in laundry detergents. Phosphate reacts with dirt in clothes and removes them.

Using the following equation:Fe2O3(s) + 3 H2(g) → 2 Fe(s) + 3 H2000)
a) How many grams of iron can be made from 6 moles H2

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223.4 g of iron can be formed from 6 moles of hydrogen gas.

Explanation:

Fe₂O₃(s) + 3 H₂(g) → 2 Fe(s) + 3 H₂O(l)

Since the given equation is the balanced one, we need 3 moles of hydrogen gas to make 2 moles of iron, so the molar ratio is 3:2. So, from 6 moles of hydrogen gas, we can make few moles of iron as,

$$ (2* 6)/(3) = 4 moles of iron$

Molar mass of iron = 55.85 g

So amount of iron produced = 4 moles × 55.85 g/mol = 223.4 g of iron

Please help me! I have a 20 minute time limit so please hurry! *50 points*

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Please help me! I have a 20 minute time limit so please hurry! 50 points