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-BARSIC- [3]
3 years ago
11

N2H4 + N2O4 --> N2 + H2O

Chemistry
1 answer:
givi [52]3 years ago
6 0

Answer:

Explanation:

Since this problem is incomplete, let us give a simple explanation to solve it.

In any reaction, we always have reactants that are in short supply and those that are in excess.

A reactant in short supply in a reaction is called the limiting reagent. This reactant will usually determine the extent of the reaction. When it is used up, the reaction will stop and will not proceed further.

To solve for the limiting reagent, convert the given mass to number of moles. Always work with number of moles.

Then write the balanced reaction equation.

Compare the moles from the balanced equation to that obtained. The reacting specie that is lesser in proportion is the limiting reagent

To solve the second part;

   Compare the number of moles of the limiting reactant to that of the product i.e H₂O;

Use this number of moles to find mass;

         Mass of H₂O = number of moles x molar mass

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natta225 [31]

Answer:

2.67761514 moles

Explanation:

0.075kg equates to 75g.

This means that the car emits 75g of CO per km.

dividing 75g by the molar mass of CO (28.01g/mol) we get 2.67761514 moles

5 0
3 years ago
Rachel has a sample containing 2 moles of carbon. How many atoms of carbon are in this sample?
Bumek [7]

Answer is: c. 1.204 × 10²⁴ atoms of carbon.

n(C) = 2 mol; amount of substance of carbon.

Na = 6.02·10²³ 1/mol; Avogadro constant (the number of constituent particles, in this example atoms, that are contained in the amount of substance given by one mole).

N(C) = n(C) · Na.

N(C) = 2 mol · 6.02·10²³ 1/mol.

N(C) = 12.04·10²³ = 1.204·10²⁴; number of carbon atoms in a sample.


5 0
3 years ago
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Please help find Empirical formula! :)
mamaluj [8]

Answer:

The empirical formula of a compound is the simplest whole number ratio of each type of atom in a compound. It can be the same as the compound's molecular formula, but not always. An empirical formula can be calculated from information about the mass of each element in a compound or from the percentage composition

Explanatio internet bud

8 0
3 years ago
Which rock is only formed by regional metamorphism?
dalvyx [7]
It is either Slate, Phyllite, Schist, and or Gneiss 
6 0
3 years ago
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. The Henry's law constant for helium gas in water at 30 ∘C is 3.7×10−4M/atm; the constant for N2 at 30 ∘C is 6.0×10−4M/atm. a.
ludmilkaskok [199]

Explanation:

1) Henry's law states that the amount of gas dissolved or molar solubility of gas is directly proportional to the partial pressure of the liquid.

To calculate the molar solubility, we use the equation given by Henry's law, which is:

M_{g}=K_H\times p_{g}

where,

K_H = Henry's constant

p_{He} = partial pressure of gas

a)  K_H=3.7\times 10^{-4} M/atm

p_{He}=2.1 atm

Putting values in above equation, we get:

M_{He}=3.7\times 10^{-4} M/atm\times 2.1 atm = 7.77\times 10^{-4} M

The solubility of helium gas is 7.77\times 10^{-4} M

b)  K_H=6.0\times 10^{-4} M/atm

p_{N_2}=2.1 atm

Putting values in above equation, we get:

M_{He}=6.0\times 10^{-4} M/atm\times 2.1 atm = 1.26\times 10^{-3} M

The solubility of nitrogen gas is 1.26\times 10^{-3} M

2)

a) Mass of solute or methanol , m= 14.7 g

Mass of solvent or water , m'= 186 g

Mass of the solution = M = m + m' = 14.7 g + 186 g = 200.7 g

w/w\%=\frac{\text{Mass of solute}}{\text{Mass of solution}}\times 100

=\frac{14.7 g}{200.7 g}\times 100=7.32\%

The mass percent of methanol is 7.32%.

b) Molality is defined as moles of solute per kilograms of solvent.

m=\frac{\text{Moles of solute}}{\text{Mass of solvent in kg}}

Moles of methanol = \frac{14.7 g}{32 g/mol}=0.4594 mol

Mass of solvent = 186 g = 0.186 kg

m=\frac{0.4594 mol}{0.186 kg}=2.4610 mol/kg

The molality of methanol is 2.4610 mol/kg.

4 0
3 years ago
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