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3 years ago

What is the compound name of 3h20

1 answer:

8 0

Trihydrate - basically 3 molecules of water. Unless you're referring to the molecule 3H2O used in measuring the total body water in the case it tritiated water.

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The melting point of sugar is 186°C. At room temperature, in which state is sugar found

Viktor [21]

Answer:

solid

Explanation:Sucrose is a solid at STP, which stands for standard temperature and pressure.

8 0

3 years ago

Consider the following equation for the combustion of acetone (C3H6O), the main ingredient in nail polish remover.

solong [7]

Answer:

a) 4869 kj will be released

b) 43.86 g of octane

Explanation:

The heat of combustion is the amount of heat released when one mole of a substance reacts with enough oxygen

since the heat of combustion is per mol of combustible substancewjat we are required to do in this problem is calculate number moles in the reactions although in a different manner

a) MW C3H6O = 158 g/ mol

mol C3H6O = 158 g × 1 mol/ 58.08 g

= 2.72 - 1790 kj / mol ×2.72 mol = 4869 kj

b) Here we are asked the mass of octane to produce 1950 kj of heat knowing that per mole of octane we get 5074.1 kj then

1 mol / 5074.1kj × 1950 kj= 0.384 mol

mass C8H18 = 0.384 mol × 114.23 g/ mol = 43.86 g

4 0

3 years ago

Read 2 more answers

15. What are the outer electrons of an atom that have to ability to create<br> chemical bonds? *

suter [353]

Answer:

valence electron

Explanation:

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8 0

3 years ago

Scientific knowledge

Cloud [144]

Answer:

The US surgeon general's 1964 report declared that smoking cigarettes was linked to cancer

The average global temperature of the Earth has increased by almost two degrees in the last century.

Explanation:

8 0

3 years ago

Read 2 more answers

An aqueous solution was created by placing 0.018 g of NaCl into a 50 mL volumetric flask and diluting to volume with deionized w

Burka [1]

Answer:

Molarity: 6.2x10⁻³M NaCl

Molality: 6.2x10⁻³m NaCl

Mole Fraction: 1.1x10⁻⁴

Mass% NaCl: 0.036% (m/m NaCl)

Explanation:

<em>Molarity -Moles NaCl / L-</em>

<em>Moles NaCl -Molar mass: 58.44g/mol-</em>

0.018g * (1mol/58.44g) = <em>0.000308 moles NaCl</em>

<em>Liters water:</em>

50mL * (1L/1000mL) = <em>0.050L</em>

M = 0.000308 moles NaCl / 0.050L

<em>Molality -Moles NaCl / kg water-</em>

<em>Moles NaCl = 0.000308 moles NaCl</em>

<em>kg water = 50mL * (1g/mL) * (1kg/1000g) = 0.050kg</em>

m = 0.000308 moles NaCl / 0.050kg

<em>Mole Fraction -Moles NaCl / Moles water+ Moles NaCl-</em>

<em>Moles water = 50g * (1mol/18.01g) = 2.776 moles</em>

Moles fraction = 0.000308 moles NaCl / 0.000308 moles NaCl + 2.776moles water

<h3>Mole fraction = 1.1x10⁻⁴</h3><h3 />

<em>Mass Percent -Mass NaCl / Mass NaCl+Mass Water * 100</em>

0.018g / 50g+0.018g * 100

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8 0

3 years ago