If you have a 92.0 gram sample of water, then what mass of hydrogen and what mass of oxygen are in the sample? Make sure you answer in “grams” of Hydrogen and “grams” of Oxygen.
Answers
Answer:
Explanation:
The formula of water is H₂O.
1. Calculate the molar mass of water
2 H = 2 × 1.008 = 2.016 u
1 O = 1 × 16.00 = 16.00 u
MM = 18.02 u
2. Mass of hydrogen
\text{Mass of H} = \text{92.0 g water} \times \dfrac{\text{2.016 g H}}{\text{18.02 g water }} = \textbf{10.29 g H}
3. Mass of 0xygen
Final answer:
A 92 gram sample of water will consist of approximately 10.22 grams of hydrogen and 81.78 grams of oxygen.
Explanation:
Water
consists of two hydrogen atoms and one oxygen atom. Therefore, it has a
molecular formula of H2O
. To find the mass of each element in a 92 gram sample, we need to know the molar mass of the elements and the compound. The molar mass of hydrogen (H) is about 1 gram per mole, and oxygen (O) has a molar mass of 16 grams per mole. So, the molar mass of water (H2O) is approximately 18 grams per mole (2*1 + 16). This means that in one mole of water, 2 grams are hydrogen and 16 grams are oxygen. If we scale this up to 92 grams, we find that there are approximately 10.22 grams of hydrogen and 81.78 grams of oxygen.
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reacts?
Answers
Answer:
3.79 g of N2.
Explanation:
We'll begin by writing the balanced equation for the reaction.
This is given below:
4NH3 + 3O2 → 2N2 + 6H2O
Next, we shall determine the mass of O2 that reacted and the mass of N2 produced from the balanced equation.
This is illustrated below:
Molar mass of O2 = 16x2 = 32 g/mol
Mass of O2 from the balanced equation = 3 x 32 = 96 g
Molar mass of N2 = 2x14 = 28 g/mol
Mass of N2 from the balanced equation = 2 x 28 = 56 g
Summary:
From the balanced equation above,
96 g of O2 reacted to produce 56 g of N2.
Finally, we shall determine the mass of N2 produced by reacting 6.50 g of O2.
This can be obtained as follow:
From the balanced equation above,
96 g of O2 reacted to produce 56 g of N2.
Therefore, 6.50 g of O2 will react to produce = (6.50 x 56)/96 = 3.79 g of N2.
Therefore, 3.79 g of N2 were obtained from the reaction..
Answers
The equivalency of the frequency of the radio wave in Hz is .
The frequency of a wave is number of cycles of the wave at a given period of time. The frequency of the wave is directly proportional to the speed of the wave and inversely proportional to the wavelength.
where;
v is the speed of the wave
f is the frequency of the wave
λ is the wavelength
The given frequency of the wave = 650 kHz
The equivalency of the frequency of the radio wave in Hz is calculated as follows;
Learn more about frequency of wave here: brainly.com/question/19638389
650 KHz means 650 thousand hertz = 650,000 Hertz. If it were an FM station, say at 92.3 MHz, that would be 92.3 Million Hertz or 92,300,000 Hertz. MHz means mega hertz. Mega = Million.
She mixes two solutions and measures their pH before and after.
She asks her lab partner which base he thinks is hardest to study. <-- my answer
She measures the temperature of a solution before and after adding H2SO4.
Answers
Answer: Option (c) is the correct answer.
Explanation:
An experiment conducted by following a detailed and organized series of steps in such a manner that its result will reject or validate the hypothesis.
For example, using an acid-base indicator will help to measure the pH of a solution.
A scientific reaction is performed in controlled conditions with proper precautions unless it could be dangerous to perform the experiment.
Therefore, we can conclude that she asks her lab partner which base he thinks is hardest to study is not a scientific experiment.
you are correct because that not an experiment its a question
Answers
Surface runoff
Explanation:
Water that flows back to the ocean is called surface runoff.
It is one of the different forms of water when it gets to the land surface.
- Some of the water after rainfall and precipitation goes into the groundwater budget seeping through pore spaces.
- This is called infiltration.
- Other forms of water runs of the surface joining streams and lakes and even the ocean.
- This component of the hydrologic cycle is called surface runoff.
- Most water after rainfall collects as a surface runoff.
- They generally flow down slope connecting with streams and lakes till they enter ocean as rivers.
learn more:
Rejuvenation of streams brainly.com/question/9259211
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Answers
Answers
the measure of the force of gravity acting on an object would be newtons.
the amount of matter in an object is called mass.
the force of gravity acting upon an object would be called weight.