One example of matter is

2 answers:

8 0

A book, Matter is any physical object that occupies space and has mass. Matter exists in three states, solid, liquids and gases

zaharov [31]3 years ago

6 0

One example of matter could be Light.

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3) How many atoms are in 14 moles of cadmium?

andre [41]

Answer:

$8.4322\times10^{24} atoms$ atoms are in 14 moles of cadmium.

Explanation:

Cadmium is a white and silvery metal that is found in the curst of the earth.During the production process of metals such as lead, copper, zinc, cadmium is extracted

Cadmium is present in some foods and is emitted when fossil fuels like as coal and oil is used, smoking cigarettes. It is used in craft glazes, metal batteries, and coatings.

We know that 1 mole of Cadmium (Cd contains) 6.023*1023 atoms, which is Avogadro's number.

So in 14 Grams of Cadmium, the number of atoms present is,

=>14×number atoms present in one cadmium atom

=> $14\times 6.023\times10^{23}$

=> $8.4322\times10^{24} atoms$

5 0

4 years ago

10g of helium (MM=4.0g/mol) occupies a volume of 73L at a temperature of 233k. calculate the pressure of this gas

Levart [38]

PV = nRT (where P = pressure; V = volume; n = number of moles; R = gas constant; T = Temperature)
Moles of He = mass of He ÷ molar mass of He = 10 g ÷ 4 g/mol = 2.5 mol

Now, based on the formula above P = (nRT) ÷ V
P = (2.5 mol × (0.082 L · atm/mol · K) × 233 K) ÷ 73 L ≈ 0.65 atm

8 0

3 years ago

In the compound H2O, the electrons in the bonds are unequally shared between oxygen and hydrogen, forming ____. (1 point)

Aloiza [94]

polar bonds due to high difference . In electronegativity of oxygen and hydrogen.

5 0

4 years ago

Read 2 more answers

Briefly explain how will you describe which object is moving fast and which one is moving slow?

user100 [1]

The object that shows fast motion is said to have a higher speed while the one with slow motion is said to have a slow speed.
Hope that helps it was on googIe

3 0

3 years ago

A chemist added an excess of sodium sulfate to a solution of a soluble barium compound to precipitate all of the barium ion as b

AnnyKZ [126]

Answer : The mass percentage of barium in the compound is, 53.8 %

Explanation : Given,

Mass of barium compound = 441 mg

Mass of barium sulfate = 403 mg = 0.403 g (1 mg = 0.001 g)

The balanced chemical reaction will be:

$Ba^{2+}(aq)+Na_2SO_4(aq)\rightarrow BaSO_4(s)+2Na^+(aq)$