Put the following elements in order from largest to smallest atomic radius
Br, Fe, Ga, Ca, Cu

Answers

Answer 1

Answer:

Ca-197

Ga-135

Cu-128

Fe-126

Br-114


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Samantha and Claire determined the mass and volume of a piece of metal to be 24.16 g and 3.22 mL respectively. Determine the density of the metal.

Answers

Answer:

7.5031055900621

Explanation:

D= M/V

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WILL GIVE BRAINLIEST

If 175.0g of nitrogen is reacted with 250.0g of hydrogen, what is the theoretical yield of the reaction? What is the excess reactant? What is the limiting reactant? Show your work.

Answers

Answer:

Nitrogen gas is the limiting reactant

Hydrogen gas is the excess reactant

The theoretical yield is 425 g of ammonia

Explanation:

Equation of reaction: 3H2 + N2 ---> 2NH3

From the equation of reaction, 3 moles of hydrogen gas reacts with 1 mole of nitrogen to produce 2 moles of ammonia gas.

Molar mass of hydrogen gas = 2.0 g

Molar mass of nitrogen gas = 14.0 g

Molar mass of ammonia gas = 17.0 g

Number of moles of hydrogen gas in 250 g = 250/2 = 125 moles

Number of moles of nitrogen gas in 175 g = 175/14 = 12.5 moles

Mole ratio of Hydrogen to Oxygen = 125/12.5 = 10 : 1

Therefore, nitrogen gas is the limiting reactant.

Hydrogen gas is the excess reactant

14 g of nitrogen gas produces 17 × 2 g of ammonia = 34 g of ammonia

175 g will produce (34 × 175)/14 = 425 g of ammonia

Therefore the theoretical yield is 425 g of ammonia

How can air pollution affect plants?

Answers

Answer:

yes air pollution can affect a plants health

Explanation:

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