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3 years ago

The medium for ocean waves

Chemistry

1 answer:

stepladder [879]3 years ago

7 0

This is a tough one but the answer is water

think of it this way the ocean is water

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Classify each of the reactants as a limiting reactant or an excess reactant for a reaction starting with five moles of each reac

matrenka [14]

In order to determine if a reactant is in excess or limiting, we must first know the required amount of reactants. This is referred to as the stoichometric amount of reactant, and it is obtained from the chemical equation.
From the equation, we form a ratio of the reactants. The reactant supplied in excess of that ratio is the excess reactant, while the other is the limiting reactant.

7 0

3 years ago

Calculate the expansion work done on the system when exactly 1 mol of solid ammonium chloride, nh4cl, decomposes completely to y

maria [59]

The expansion work on an irreversible system is equal to:

W = - PV

Assuming that the gas is ideal, therefore:

PV = nRT

[P=pressure, V=volume, n=number of moles, R=gas constant, T=absolute temperature]

Therefore,

W = -nRT

W = -(1 mol) * (8.314 J / mol K) * (1250 K)

W = -10,392.50 J

Therefore about 10,392.50 J or 10.4 kJ of work is done on the system.

8 0

4 years ago

Which pair represents isotopes?

Taya2010 [7]

Answer:

A. All of the other answers are correct

Explanation:

Each pairs are from the same elements, meaning they share the same atomic number but different nucleon number (neutron number + atomic number). Thus, all of the answers are correct.

7 0

3 years ago

Read 2 more answers

How many liters of carbon dioxide will 0.5 moles of lithium hydroxide (LiOH) absorb?

Elden [556K]

Answer : The volume of carbon dioxide will be, 5.6122 L

Solution : Given,

Moles of LiOH = 0.5 moles

Molar mass of carbon dioxide = 44 g/mole

Density of carbon dioxide = 0.00196 g/ml

First we have to calculate the mass of carbon dioxide.

The balanced reaction will be,

$2LiOH+CO_2\rightarrow Li_2CO_3+H_2O$

From the reaction we conclude that

As, 2 moles of LiOH absorbs 44 grams of carbon dioxide

So, 0.5 moles of LiOH absorbs $\frac{0.5moles}{2moles}\times 44g=11$ grams of carbon dioxide

Mass of carbon dioxide = 11 g

Density of carbon dioxide = 0.00196 g/ml

Now we have to calculate the volume of carbon dioxide.

$Density=\frac{Mass}{volume}$

$0.00196g/ml=\frac{11g}{volume}$

Volume of carbon dioxide = 5612.24 ml = 5.6122 L (1 L = 1000 ml)

Therefore, the volume of carbon dioxide will be, 5.6122 L

5 0

3 years ago

The first method of determining the chemical composition of substances in space was to _____.

Art [367]

Answer:The first method to determine the chemical composition of a substance in space was using light. By determining red shift in the observed spectrum of light they could determine the elements they were observing

Explanation:

5 0

3 years ago