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Jet001 [13]
3 years ago
6

How do decomposers get energy

Chemistry
2 answers:
zhannawk [14.2K]3 years ago
6 0
They get energy by Breaking down dead organisms and animal wastes.
Fed [463]3 years ago
6 0
They get energy by breaking down dead organisms and animal waste

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You are a amazing person
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True or False: As the ball rises from point 1 to point 3, it slows down
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SIZIF [17.4K]

Answer: 0.9375 g

Explanation:

To calculate the number of moles for given molarity, we use the equation:

\text{Moles of solute}={\text{Molarity of the solution}}\times{\text{Volume of solution (in L)}}     .....(1)

Molarity of HCl solution = 0.75 M

Volume of HCl solution = 25.0 mL = 0.025 L

Putting values in equation 1, we get:

\text{Moles of} HCl={0.75}\times{0.025}=0.01875moles  

CaCO_3(s)+2HCl(aq)\rightarrow CaCl_2(s)+CO_2(g)+H_2O(l)  

According to stoichiometry :

2 moles of HCl require = 1 mole of CaCO_3

Thus 0.01875 moles of HCl will require=\frac{1}{2}\times 0.01875=0.009375moles  of CaCO_3

Mass of CaCO_3=moles\times {\text {Molar mass}}=0.009375moles\times 100g/mol=0.9375g

Thus 0.9375 g of CaCO_3 is required to react with 25.0 ml of 0.75 M HCl

6 0
3 years ago
Equilibrium systems exist throughout nature.<br> True or False??
Natali5045456 [20]
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Determine the number of moles of the anhydrous salt present after heating, assuming that the contents of the aluminum cup after
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Answer:

0.2 moles, assuming weight of dried salt

Explanation:

In order to determine the number of moles, we need to be aware of the mass of the substance in question.

Assuming the mass of the dehydrated KAl(SO_{4} )_{2}.H_{2} O is 50g.

No. of moles = mass of substance/ molar mass of the substance.

= \frac{50g}{39+27+32*2+16*4*2\\)g/mol}

= 0.2 moles moles.

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