2 years ago

HELP ANYONE PLEASEE?? TY!!!

Chemistry

1 answer:

ELEN [110]2 years ago

4 0

Answer:

so the order is grass, which gets eaten by the grasshopper, which is eaten by the frog, which gets eaten by the snake. grass wpuld be at top, snake at bottom.

Explanation:

hope this helps

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Zn + 2 HCl --> ZnCl2 + H2 How many moles of hydrochloric acid (HCl) are used (assume a complete reaction) if 8.3 moles of zin

uysha [10]

Answer:

E. 16.6 mol HCl

Explanation:

The equation for the reaction is;

Zn + 2 HCl --> ZnCl2 + H2

From the reaction 2 moles of HCl produces 1 mole of ZnCl2

Therefore; 8.3 moles of ZnCl2 will be produced by;

= 8.3 moles ×2

= 16.6 Moles of HCl

Therefore; E. 16.6 mol HCl

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4 years ago

A key process common to all organisms is the ability to reproduce. Where do all cells come from?

satela [25.4K]

Answer:

It’s d

Explanation:

It’s d 100%

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3 years ago

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Zigmanuir [339]

The answer is Index fossils its the only answer it could be

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3 years ago

What is the most abundant greenhouse gas released through human activities? a. methane b. nitrous oxide c. carbon dioxide d. sul

777dan777 [17]

Answer:

C. Carbon dioxide. (C02.)

Explanation:

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3 years ago

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You burn a 3.4 g cube of tofu to warm 12 g of water, which increases the temperature of the water 7 °C. How many calories of hea

Murrr4er [49]

Answer:

Water absorbs 84cal.

Explanation:

The given information about water is:

- mass of water (m): 12g

- change in temperature (ΔT): 7°C

With the given information, and the specific heat of water (c=1cal/g.°C), we can calculate the aeat that water absorbs, using the heat formula:

$\begin{gathered} Q=m*c*\Delta T \\ Q=12g*1\frac{cal}{g*\degree C}*7\degree C \\ Q=84cal \end{gathered}$

So, water absorbs 84cal.

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1 year ago