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Alla [95]
3 years ago
14

David found that water can be created in a lab by burning hydrogen gas in air. He concluded that water is not a compound because

only hydrogen was used to form water. What is wrong with David's conclusion
Chemistry
1 answer:
Virty [35]3 years ago
7 0

Hi~~

H2O, commonly known as water, is definitely a compound.

David's conclusion is wrong because the hydrogen gas combined with oxygen from the air to form dihydrogen monoxide, also known as water.


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Butane is a common fuel used in cigarette lighters and camping stoves. Normally supplied in metal containers under pressure, the
klasskru [66]

Pressure of Butane in the container at 135°C = 1.07 atm

Given:

The H°vap of butane is 24.3 kJ/mol.

starting out at 25 °C

Temperature at the end: 135 °C

2.3 atm of pressure

To Find:

The container's pressure

The perpendicular force per unit area, also known as the stress at a point within a confined fluid, is known as pressure in the physical sciences.

Equation of Clausius-Clapeyron

P2 = 1.07 atm and ln (P2/2.3 atm)

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The pressure in the container at 135°C (ΔH°vap ) is 1.07 atm

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6 0
1 year ago
How many moles of magnesium, Mg, are there in 4.75 grams of magnesium?
Nina [5.8K]
Molar mass Mg = 24.3 g/mol

1 mole mg ------------ 24.3 g
?? moles mg --------- 4.75 g

4.75 x 1 / 24.3 => 0.195 moles of Mg

hope this helps!
3 0
3 years ago
If 21.3 grams of lithium react with excess water, how many liters of hydrogen gas can be produced at 297 Kelvin and 1.40 atmosph
Gnoma [55]
Hope it helped you.

4 0
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A report was created that outlined the outbreak of a disease called fungal meningitis among patients who received contaminated s
lianna [129]

Answer:

the centers for disease control and prevention

8 0
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Why does it generally take more enthalpy to ignite a solid than a gas or liquid?
Anuta_ua [19.1K]

Answer:

It is due to the nature of the reactants

Explanation:

To ignite a solid, we require more heat component compared to liquids and gases. For ignition to occur, oxygen gas combines with a reactant in most cases.

Some factors affect the rate rate at which a chemical proceeds. One of the factors is the nature of reactants.

The solid phase is very slow while the gaseous phase is rapid and fast.

            solid phase < liquid phase <  gas phase

Gases are free and the molecules move in all direction. They easily combine and react very fast.

6 0
3 years ago
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