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3 years ago

Convert 2.55 moles of water to grams.

Chemistry

1 answer:

Vlada [557]3 years ago

6 0

Explanation:

No of mass = no of moles × molar mass

=2.55 × 18 g

= 45.9 g

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c3H8 + 5O2 = 3CO2 + 4H2O When 44.0 grams of propane (C3H8) under goes complete combustion, how many grams of water will be produ

Umnica [9.8K]

Answer: 72 grams of water will be produced.

Explanation:

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

$\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}$ ....(1)

Mass of propane = 44 grams

Molar mass of propane = 44 grams

Putting values in above equation, we get:

$\text{moles of propane}=\frac{44g}{44g/mol}=1mole$

For the reaction of combustion reaction of propane, the equation follows:

$C_3H_8+5O_2\rightarrow 3CO_2+4H_2O$

By Stoichiometry of the reaction,

1 mole of propane produces 4 moles of water.

So, 1 mole of propane will produce = $\frac{1}{1}\times 4=4moles$ of water.

Now, to calculate the amount of water, we use equation 1, we get:

Molar mass of water = 18 g/mol

$4mol=\frac{\text{Mass of water}}{18g/mol}$

Mass of water produced = 72 grams

Hence, 72 grams of water will be produced.

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3 years ago

What is chemistry? I NEED HELP ASAP!

Thepotemich [5.8K]

the branch of science that deals with the identification of the substances of which matter is composed; the investigation of their properties and the ways in which they interact, combine, and change; and the use of these processes to form new substances.the branch of science that deals with the identification of the substances of which matter is composed; the investigation of their properties and the ways in which they interact, combine, and change; and the use of these processes to form new substances.

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2 years ago

What change must made to the coefficients to balance this equation?

tresset_1 [31]

Switch the 3 and the 4, this change must made to the coefficients to balance this equation.

Now, the correct balance equation is C₃H₈ + 5 O₂ → 3 CO₂ + 4H₂O

This method of balancing chemical equations involves assigning algebraic variables as stoichiometric coefficients to each species in the unbalanced chemical equation.

Learn more about balance equation here:- brainly.com/question/11904811

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Imagine the earth's hydrosphere began to dry up and disappear. all of the following would be affected except

RoseWind [281]

Answer most suited would be A

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Which volume of 0.10m naoh exactly neutralizes 15.0 milliliters of 0.20m hno3?

JulsSmile [24]

The balanced chemical reaction is:

HNO3 + NaOH = NaNO3 + H2O

We are given the amount and concentration of the reactants. The values given will be the starting point.

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