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Lelu [443]
4 years ago
8

What is the molar mass of a substance

Chemistry
1 answer:
Mazyrski [523]4 years ago
3 0

Answer:

So the molar mass of a chemical compound is defined as the mass of a sample of that compound is divided by the amount of the substance in that sample measured in the moles.

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A certain orbital of the hydrogen atom has n = 4 and l = 2 what are the possible values of ml for this orbital?
Nadya [2.5K]

The ml is also called as the magnetic quantum number. The value of ml can range from –l to +l including zero. Hence all of the possible values for ml given that l = 2 are:

<span>-2, -1, 0, + 1, + 2</span>

3 0
4 years ago
If your sample of vinegar is approximately 4.76% (w/w), what volume should you use so that approximately 40 mL of 0.1 M NaOH is
Ronch [10]

Based on the concentrations given, the volume of vinegar required is 5.04 mL.

<h3>What is the concentration of the vinegar solution?</h3>

The concentration of a solution is the amount of solute in a given volume of solution.

Concentration can be expressed as:

  • molar concentration
  • percentage concentration

The concentration of the vinegar solution is 4.76% (w/w). This means that 4.76 g of vinegar is present in 100 g of solution.

Mass of vinegar = 4.76 g

molar mass if vinegar = 60 g/mol

moles of vinegar = 4.76/60 = 0.0793 moles

volume of solution/water = 100 mL or 0.1 L

Molarity of vinegar = 0.0793/0.1 = 0.793 M

1 mole of vinegar reacts with 1 mole of NaOH

let the volume of vinegar required be V

0.793 M × V = 40 × 0.1

V = 4/0.793

V = 5.04 mL

Therefore, the volume of vinegar require is 5.04 mL.

Learn more about molarity at: brainly.com/question/26528084

4 0
3 years ago
A radio station's channel, such as 100.7 FM or 92.3 FM, is actually it's frequency in megahertz, where 1 MHz=10^6Hz and 1 Hz=1s^
gayaneshka [121]

We can directly solve this problem using the wavelength formula which is:

wavelength = speed of light / frequency

We know from the given that 99.30 FM = 99.30 MHz, therefore:

wavelength = (2.99*10^8 m/s) / (99.30*10^6 Hz) <span>
<span>wavelength = 3.011 meters</span></span>

5 0
4 years ago
the density of granite is approximately 2.7 grams per cubic centimeter. what would be the approximate mass of a cube of granite
Vlada [557]

Given parameters:

Density  = 2.7g/cm³

Length of the cube  = 10cm

Unknown:

Mass of the cube = ?

Solution:

Density is the mass per unit volume of a substance.

  Density = \frac{mass}{volume}  

                Mass = density x volume

  We need to find the volume of the cube;

    Volume of the cube  = L³

where L is the length of the cube;

         Volume of the cube = 3³ = 27cm³

So, the mass of the granite = 2.7 x 27 = 72.9g

The granite has a mass of 72.9g

6 0
3 years ago
Which equation using element symbols correctly describes the reaction: "One molecule of methane plus two molecules of diatomic o
kiruha [24]

Answer:

C. CH₄+2O₂ →2H₂O+CO₂

Explanation:

This is a popular combustion reaction.

            C. CH₄+2O₂ →2H₂O+CO₂

In combustion, hydrocarbons burn in the presence of oxygen gas and they produce water and carbon dioxide only. The process is accompanied with the release of energy.

We simply say for the above reaction that:

           One molecule of methane(CH₄) reacts with two molecules of oxygen gas(O₂) to produce two molecules of water(H₂O) and one molecule of carbon dioxide only

3 0
3 years ago
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