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4 years ago

How many grams of H2 would be formed if 34 grams of carbon reacted with an unlimited amount of H2O? The reaction is

1 answer:

3 0

The balanced chemical reaction is:

<span>C + H2O → CO + H2
</span>
We are given the amount of carbon to be used in this reaction. This will be the starting point of the reaction.

<span>34 g C ( 1 mol C / 12.01 g C ) ( 1 mol H2/ 1 mol C) (2.02 g H2 / 1 mol H2) = 5.72 g H2

Apparently, the correct answer is not in the given choices.</span>

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What lab equipment do you use to measure the density of gold and how to use it

tigry1 [53]

Answer: Divide the mass of the object by its volume to yield the density of the object. For example, the object density = mass / (Vf – Vi). Compare the measured density to that of pure gold (19.3 g/cc) to determine whether the object is made of pure gold.

Explanation: I searched it

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3 years ago

Gerry is looking at an unknown element. He knows it has 1 valence electron and is highly reactive with water. What group is the

SVEN [57.7K]

Answer:

Group 1

because they have just one valance electron, group 1 elements are very reactiv.

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3 years ago

Calculate the energy of the violet light emitted by a hydrogen atom with a wavelength of 410.1 nm.

Ket [755]

Answer:

4.85 x 10⁻¹⁹J

Explanation:

Given parameters:

Wavelength = 410.1nm

Unknown:

The energy of the violet light = ?

Solution:

The energy of a wave can be derived using the expression below;

E = $\frac{hc}{wavelength}$

h is the planck's constant

c is the speed of light

Insert the parameters and solve;

E = $\frac{6.62 x 10^{-34} x 3 x 10^{8} }{410.1 x 10^{-9} }$ = 4.85 x 10⁻¹⁹J

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3 years ago

Exactly 10.0 L of air -25°C is heated to 100.0°C. What is the new volume if the pressure is kept constant?

zepelin [54]

Answer: V2= 15.0403226 Liters

Explanation:

Use V1/T1=V2/T2

Make sure you change the degrees Celsius to Kelvin. (Kelvin = degrees Celsius +273)

10.0L / 248 K = V2/ 373 K

Cross multiply V1 and T2 and divide by T1

(10.0 L)( 373K)/ 248 K = V2

V2= 15.0403226 Liters (Kelvin cancels out)

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3 years ago

What is the mass of 2.2 moles of Beryllium chloride

Fiesta28 [93]

Answer:

the mass of 2.2 moles of Beryllium chloride is

Explanation:

175.8200004 gram

5 0

3 years ago