A heavyweight boxer winds up and punches a punching bag, which of the following are true?

1 answer:

8 0

The force acting on the bag is equal and opposite to the force acting on the fist.

The fist creates the action force and the punching bag creates the reaction force.

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molecules that resemble fats but contain phosphate functional groups are called: a. steroids. b. polypeptides. c. phospholipids.

Rom4ik [11]

The answer is C. Phospholipids because Lipids mean "Fat"

8 0

3 years ago

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A chemist wishes to perform the following reaction: N2 + 3 H2 → 2 NH3 If only 14.0 g of N2 is available, what is the minimum amo

djyliett [7]

Answer:

3 grams

Explanation:

14 g of N2 is 1/2 mole

If you halve the N2 in the balanced equation , you have to halve the H2 down to 1.5 moles of H2 which is 3 grams

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2 years ago

A 0.420 M Ca(OH)2 solution was prepared by dissolving 64.0 grams of Ca(OH)2 in enough water. What is the total volume of the sol

nikitadnepr [17]

The volume of the solution is given below which can be calculated using the molarity formula as 2.18 litres.

<h3>Define the molarity of a solution.</h3>

Molarity (M) is the amount of a substance in a certain volume of solution. Molarity is defined as the moles of a solute per litres of a solution.

$Molality = \frac{Moles \;solute}{Volume \;of \;solution \;in \;litre}$