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zysi [14]
2 years ago
13

Help please !!!

Chemistry
1 answer:
Tom [10]2 years ago
7 0
The ball slowed down faster than the floor because the carpet has more friction than the floor. The carpet isn’t smooth but the floor is.
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How many molecules are there in 2.30 grams of NH3
mixer [17]
<span>Avogadro's number represents the number of units in one mole of any substance. This has the value of 6.022 x 10^23 units / mole. This number can be used to convert the number of atoms or molecules into number of moles. We calculate as follows:

2.30 g NH3 (1 mol / 17.03 g ) (</span>6.022 x 10^23 molecules / 1 mol ) = 8.13x10^22 molecules
7 0
3 years ago
How many chloride ions are in a 220 grams of calcium chloride?
steposvetlana [31]

Answer: Hello, There! Your Answer is Below

2.4 x 1024 ions

Explanation:

220 g of CaCl₂  =  X moles

Solving for X,

                                                X  =  (220 g × 1 mol) ÷ 110.98 g

                                                X  =  1.98 moles

As,

                          1 mole contained  =  1.20 × 10²⁴ Cl⁻ Ions

Then,

                   1.98 mole will contain  =  X Cl⁻ Ions

Solving for X,

                                                 X  =  (1.98 mol × 1.20 × 10²⁴ Ions) ÷ 1mol

                                                 X  =  2.38 × 10²⁴ Cl⁻ Ions

Hope this Helps!

Have a great DAy!

`August~

3 0
2 years ago
Need help on this question asap please
3241004551 [841]

Answer:

The correct answer is - 14.

Explanation:

In the given molecular formula of the aluminum sulphite which is Al2(SO3)3, this molecular formula there different type of elements are bonded together to form this compound each element has a specific number of atoms present. This compound has three elements that are aluminum, sulfur, and oxygen and the atoms are present are:

Al = 2 atoms represented by subscript

S = 3 atoms represented as whole subscripts of sulfite

O = 9 atoms 3 inside bracket and 3 outside of bracket that multiplies.

Thus, total number of atoms are 2+3+9 = 14

3 0
3 years ago
Lead has an atomic number of 82. Which statement describes all neutral atoms and ions of lead?
IRINA_888 [86]

The neutral atom of lead must have 82 protons while ions can have b or less than 82.

The atomic number of an element is the number of protons in the nucleus of the element.

Also, for neutral atoms, the number of protons equals the number of electrons.

In ionic form, the number of protons/electrons of an atom may vary and be different from that of the neutral form.

Positive charges mean that the ion has less proton than its neutral version while negative charges mean that it has more electrons than its neutral version.

Thus, the neutral atom of lead will contain an equal number of protons as the electrons while its ionic form can have more or less than 82 protons.

More on atoms can be found here: brainly.com/question/803445?referrer=searchResults

6 0
2 years ago
Give the name of one or more polysaccharides that matches each of the following descriptions:
adell [148]

Answer:

A Cellulose not digested by humans.

b. the storage form of carbohydrates in plants is starch

C amylose contains 1-4 glycosidic bond

D Glycogen and starch are highly branched polysaccharides.

Explanation:

8 0
2 years ago
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