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2 years ago

How do you test for hydrogen?

2 answers:

7 0

To test for hydrogen, burn a candle near the suspected source of hydrogen. If you hear a squeaky pop sound, hydrogen is present because when hydrogen gas burns, it makes a squeaky pop sound.

lorasvet [3.4K]2 years ago

3 0

Hydrogen burns with a loud pop in when a burning splint is held near it.

<h3>Test for hydrogen</h3>

There are a couple of ways to test for hydrogen. However, the simplest and most popular way is to bring a burning splint near a container containing hydrogen gas.

The production of a loud squeaky pop sound indicates the presence of hydrogen gas. All precautions should, however, be observed.

More on test for hydrogen can be found here: brainly.com/question/13323291

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If the number of moles of a gas initially contained in a 2.10 l vessel is doubled, what is the final volume of the gas in liters

Anon25 [30]

Avagadro's law gives the relationship between volume of gas and number of moles of the gas. When the temperature and pressure are constant, volume is directly proportional to number of moles of gas.
$\frac{V1}{n1} = \frac{V2}{n2}$
V -volume and n - number of moles of gas.
parameters for the first instance are on the left side and parameters for the second instance are on the right side of the equation
initial number of moles n1 - N
n2 - 2N as the number of moles are doubled
V1 - initial volume - 2.10 L
V2 - final volume - V
substituting the values in the equation
$\frac{2.10L}{N} \frac{V}{2N}$
V = 4.20 L
final volume is 4.20 L

7 0

3 years ago

What is the pressure in a container that has 3 atm H2, 2 atm of N2 and 5 atm of F2?

LekaFEV [45]

<h3>Pressure has additive properties meaning that if you add the partial pressures together, you obtain total pressure. P total = P1 + P2 + P3 + ... Pressure of container = pressure of H2 + Pressure of N2 + Pressure of F2 = 3atm + 2atm + 5atm = 10atm Hope that helped. ;)</h3>

7 0

3 years ago

When iron (III) oxide combines with sulfuric acid H2 S04 the product formed are water and iron (III) sulfate. What is the coeffi

jarptica [38.1K]

Answer:

coefficient 3 is needed t with water molecule to balance the equation.

Explanation:

Chemical equation:

Fe₂O₃ + H₂SO₄ → Fe₂(SO₄)₃ + H₂O

Balanced chemical equation:

Fe₂O₃ + 3H₂SO₄ → Fe₂(SO₄)₃ + 3H₂O

The equation is balanced. There are two iron three sulfate six hydrogen and three oxygen atoms are present on both side of equation.

The given equation completely follow the law of conservation of mass.

According to the law of conservation mass, mass can neither be created nor destroyed in a chemical equation.

Coefficient with reactant and product:

Fe₂O₃ 1

H₂SO₄ 3

Fe₂(SO₄)₃ 1

H₂O 3

So coefficient 3 is needed t with water molecule to balance the equation.

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4 years ago

True or false: Organisms of the same species are identical

Rus_ich [418]

Answer:

According to biological spices concept, organisms belong to the same spices if they can interbreed viable, fertile offsprings.

6 0

4 years ago

Compound w , c6h13cl, undergoes base-promoted e2 elimination to give a single c6h12 alkene, y. compound x, c6h13br, undergoes a

CaHeK987 [17]

<span>Answer: W must be 5-chloro-2-methylpentane. It can give only 4-methy-1-pentene (Y) upon dehydrohalogenation: X must be 4-chloro-2-methylpentane. Dehydrohalogenation yields both Y and 4-methyl-2-pentene. (Z)</span>

5 0

3 years ago