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4 years ago

What is the term for temperature in a room reaching the point where all exposed surfaces in room ignite?

Chemistry

1 answer:

eimsori [14]4 years ago

3 0

Answer:flashover

Explanation: flashover are event that occurs when all of the combustible materials in a room reach their ignition temperatures at the same time

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Is iron man made or natural

Ipatiy [6.2K]

Answer:

Iron is natural. Paper is man-made

Explanation:

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3 years ago

Read 2 more answers

how do you get a guy back? i lashed out at him and I regret it...now he has another gf...i would do anything ANYTHING to get thi

Vanyuwa [196]

Answer:

Who knows? Never been there

Explanation:

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3 years ago

How many grams of NaC2H3O2 are needed to prepare 350. mL of a 2.75 M solution? (molar mass of

shepuryov [24]

Answer:

78.96 g of NaC2H3O2

Explanation:

We are given;

Volume of the solution as 350 mL
Molarity of the solution as 2.75 M
Molar mass of the solute NaC2H3O2 as 82.04 g/mol

We are required to determine the mass of the solute;

First we determine the number of moles;

Moles = Molarity × Volume

Therefore;

Moles of the solute = 2.75 M × 0.350 L

= 0.9625 moles

Second, we determine the mass

Mass = Moles × Molar mass

= 0.9625 moles × 82.04 g/mol

= 78.9635 g

= 78.96 g

Therefore, the mass of NaC2H3O2 needed is 78.96 g

4 0

3 years ago

Consider the following balanced equation for the following reaction:

balandron [24]

Answer: The amount of carbon dioxide formed in the reaction is 47.48 grams

Explanation:

For the given chemical equation:

$15O_2(g)+2C_6H_5COOH(aq.)\rightarrow 14CO_2(g)+6H_2O(l)$

To calculate the actual yield of carbon dioxide, we use the equation:

$\%\text{ yield}=\frac{\text{Actual yield}}{\text{Theoretical yield}}\times 100$

Percentage yield of carbon dioxide = 83 %

Theoretical yield of carbon dioxide = 1.30 moles

Putting values in above equation, we get:

$83=\frac{\text{Actual yield of carbon dioxide}}{1.30moles}\times 100\\\\\text{Actual yield of carbon dioxide}=\frac{1.30\times 83}{100}=1.079moles$

To calculate the number of moles, we use the equation:

$\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}$

Molar mass of carbon dioxide = 44 g/mol

Moles of carbon dioxide = 1.079 moles

Putting values in above equation, we get:

$1.079mol=\frac{\text{Mass of carbon dioxide}}{44g/mol}\\\\\text{Mass of carbon dioxide}=(1.079mol\times 44g/mol)=47.48g$

Hence, the amount of carbon dioxide formed in the reaction is 47.48 grams

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4 years ago

What causes the temperature to decrease with altitude in the troposphere?

kvasek [131]

the temperature decreases with height here just like it does in the troposphere.

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4 years ago