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4 years ago

14

The water cycle is the movement of water from Earth's surface to the atmosphere and back to Earth's surface. Why do many living

organisms depend on the water cycle?

1 answer:

sesenic [268]4 years ago

7 0

Many organisms need clean drinking water and we also need moisture in the air for us to stay hydrated

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HELP ME WITH MY WORK BEFORE 4:00 PLZZZZZZZZZZZZZZZZZ PEOPLEZ

Alex787 [66]

Answer:

there are 2 atoms

B) 2

Explanation:

hydrogen and one atom of oxygen bonded together.

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3 years ago

Which change occurs at the anode in an operating electrochemical cell?

murzikaleks [220]

Answer:loss of electrons

Explanation:

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4 years ago

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IrinaVladis [17]

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3 years ago

What is the molar mass of Ca(ClO4)2? 171.6 g/mol 203.6 g/mol 239.0 g/mol 279.1 g/mol

Lady_Fox [76]

Answer:

239.0 g/mol

Explanation:

The molar mass of a compound is the sum of all the molar masses of all the individual elements present in the compound.

The molar mass of Ca(ClO4)2 can calculated as follows:

= 40 + 2[ 35.5 + (16x4)]

40 + 2[ 35.5 + 64]

40 + 2[99.5]

40 + 199

239g/mol

7 0

3 years ago

How many grams of NH3 are contained in 1.75 L of a .833 M NH3 solution?

Yuri [45]

Answer:

24.9 g

Explanation:

Given data

Volume of the solution: 1.75 L

Concentration of ammonia: 0.833 M

Step 1: Calculate the moles of ammonia

The concentration of ammonia is 0.833 M, that is, there are 0.833 moles of ammonia (solute) per liter of solution. Then,

$1.75LSolution \times \frac{0.833 molNH_3}{1LSolution} = 1.46 mol$

Step 2: Calculate the mass of ammonia

The molar mass of ammonia is 17.03 g/mol. The mass corresponding to 1.46 moles of ammonia is:

$1.46 mol \times \frac{17.03g}{mol} = 24.9 g$

5 0

3 years ago