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3 years ago

Am I correct?? Help please

Chemistry

2 answers:

anzhelika [568]3 years ago

8 0

Answer:

I would say you are correct.

Explanation:

Anuta_ua [19.1K]3 years ago

5 0

Answer:

I believe it'll be A (even though you chose it already).

Explanation:

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What is it called when energy transfers between objects until they reach the same temperature and their particles move at the sa

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3 years ago

Read 2 more answers

Consider the following unbalanced chemical equation. C5H12(l) + O2(g) → CO2(g) + H2O(l) If 21.9 grams of pentane (C5H12) are bur

Marina CMI [18]

Answer : The mass of water produced will be 32.78 grams.

Explanation : Given,

Mass of $C_5H_{12}$ = 21.9 g

Molar mass of $C_5H_{12}$ = 72.15 g/mole

Molar mass of $H_2O$ = 18 g/mole

First we have to calculate the moles of $C_5H_{12}$ .

$\text{Moles of }C_5H_{12}=\frac{\text{Mass of }C_5H_{12}}{\text{Molar mass of }C_5H_{12}}=\frac{21.9g}{72.15g/mole}=0.3035moles$

Now we have to calculate the moles of $H_2O$ .

The balanced chemical reaction will be,

$C_5H_{12}(l)+8O_2(g)\rightarrow 5CO_2(g)+6H_2O(l)$

From the balanced reaction we conclude that

As, 1 mole of $C_5H_{12}$ react to give 6 moles of $H_2O$

So, 0.3035 moles of $C_5H_{12}$ react to give $0.3035\times 6=1.821$ moles of $H_2O$

Now we have to calculate the mass of $H_2O$ .

$\text{Mass of }H_2O=\text{Moles of }H_2O\times \text{Molar mass of }H_2O$

$\text{Mass of }H_2O=(1.821mole)\times (18g/mole)=32.78g$

Therefore, the mass of water produced will be 32.78 grams.

3 0

3 years ago

HELP ASAP!!!!!!!!!!

weqwewe [10]

Answer:

D) food that a chef seal in a plastic bag and cook under a controlled temperature condition.

Explanation:

Sous vide, also known as low temperature long time cooking, is a method of cooking in which food is placed in a plastic pouch or a glass jar and cooked in a water bath for longer than usual cooking times at a precisely regulated temperature.

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3 years ago

Indicate the pH value as pH < 7, pH = 7 or PH > 7 for each of the following substances.

Galina-37 [17]

Explanation:

a) PH>7

b)PH=7

c)PH>7

d) PH>7

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3 years ago

What are the two cell division stages in the mitotic phase of the cell cycle?

Ugo [173]

Cytokinesis and telophase!

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