Is glass breaking physical or a chemical

How does an introduced species affect an ecosystem? Give 2 examples of positive ways

garri49 [273]

Answer:

1+ it can help create balance among the ecosystem, particularly by controlling invasive species

2+ can help restore native ecosystems on degraded land

1- can become an invasive species

2- can cause an imbalance among native species

Explanation:

5 0

2 years ago

What volume of nitrogen (n2) would be completely consumed in the reaction with 30.80 g of

Shtirlitz [24]

The answer is 285.33g nitrogen would be completely consumed in the reaction with 30.80 g of hydrogen gas.

A mole is defined as 6.02214076 × 10²³ atoms, molecules, ions, or other chemical units.

Write a balanced equation.

Calculate the moles of H₂ in 30.8 g.

Calculate the moles of N₂ required to react with H₂.

Calculate the mass of N₂.

Calculate the initial mass of N₂.

Start with a balanced equation.

N₂ + 3H₂ --> 2NH₃

Calculate the moles of H₂ in 30.8 g.

n = m/M; where n = moles, m = mass, and M = molar mass.

M(H₂) = 1.008 g/mol

n(H₂) = (30.8 g)/(1.008 g/mol) = 30.56 mol H₂

Calculate the moles of N₂ required to react with 30.56 mol H₂ , using the mole ratio between H₂ and N₂ in the balanced equation.

30.56 mol H₂ × 1 mol N₂/3 mol H₂ = 10.18 mol N₂

Calculate the mass of N₂ in 10.18 mol.

m = n × M

M(N₂) = 2 × 14.007 g/mol N = 28.014 g/mol N₂

m(N₂) = 10.18 mol × 28.014 g/mol = 285.33g N₂

Therefore 285.33g nitrogen would be completely consumed in the reaction with 30.80 g of hydrogen gas.

To know more about mole

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5 0

2 years ago

Hydrogen is 99% 1H, 0.8% 2H, and 0.2% 3H. Calculate its average atomic mass.

AlekseyPX

The average atomic mass of hydrogen (99% H-1, 0.8% H-2, and 0.2% H-3) is 1.012 amu.

The average atomic mass of hydrogen can be calculated with the following equation:

$A = m_{H-1}\%_{H-1} + m_{H-2}\%_{H-2} + m_{H-3}\%_{H-3}$

Where:

$m_{H-1}$ : is the mass of protium (H-1) = 1

$m_{H-2}$ : is the mass of deuterium (H-2) = 2

$m_{H-3}$ : is the mass of tritium (H-3) = 3

$\%_{H-1}$ : is the abundance percent of H-1 = 99%

$\%_{H-2}$ : is the abundance percent of H-2 = 0.8%

$\%_{H-3}$ : is the abundance percent of H-3 = 0.2%

The average atomic mass is:

$A = 1*99\% + 2*0.8\% + 3*0.2\%$

Changing all the percent values into decimal ones, we have:

$A = 0.99 + 2*0.008 + 3*0.002 = 1.012$

Therefore, the average atomic mass of hydrogen is 1.012 amu.

Learn more about average atomic mass here brainly.com/question/8575403?referrer=searchResults

I hope it helps you!

6 0

3 years ago

Lime juice turns limus paper red indicating that lime juice is?

Nostrana [21]

Lime juice turns blue Litmus to Red so lemon juice is acidic in nature that is lime juice contains an acid. The most common indicator used for testing acids and bases in the laboratory is Litmus. Mark me Brainliest please!

7 0

3 years ago

Which organelles surround the cell?check all that apply

stich3 [128]

Answer:

cell walls

Explanation:

because the rigid structure that surrounds the cell membrane and provides support to the cells

3 0

4 years ago