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3 years ago

Question 3

Chemistry

1 answer:

sladkih [1.3K]3 years ago

7 0

Hi there!

$\large\boxed{\text{B. Producer}}$

The only organisms in a food web that do not get energy from other organisms are producers. These are autotrophs (ex: plants or phytoplankton) that use photosynthesis to produce energy. This means that these organisms only intake water and sunlight rather than nutrients from other organisms (consumers).

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How many moles of H2O will be formed from the reaction of 80 g of

Roman55 [17]

Answer: 2 moles of $H_2O$ will be formed.

Explanation:

To calculate the moles :

$\text{Moles of solute}=\frac{\text{given mass}}{\text{Molar Mass}}$

$\text{Moles of} NaOH=\frac{80g}{40g/mol}=2moles$

The balanced chemical equation is:

$H_2SO_4+2NaOH\rightarrow Na_2SO_4+2H_2O$

According to stoichiometry :

2 moles of $NaOH$ give = 2 moles of $H_2O$

Thus 2 moles of $NaOH$ give = $\frac{2}{2}\times 2=2moles$ of $H_2O$

Thus 2 moles of $H_2O$ will be formed.

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AfilCa [17]

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3 years ago

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Gelneren [198K]

The Protons determine the identity.

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4 years ago

17. When 1 mol of the following substances react completely with oxygen, the

Len [333]

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4 years ago

Read 2 more answers

1.6x10^23 lead atoms. Find the weight in grams

Ber [7]

Moles of lead(Pb) = 1.6x10^23/6.02x10^23 = 0.265 moles.

Weight of lead = moles x atomic weight of lead
= 0.265x207.2
= 54.908 grams.

Hope this helps!

5 0

3 years ago