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3 years ago

HURRY FAST!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Chemistry

2 answers:

miss Akunina [59]3 years ago

8 0

B. The sand increases friction by increasing roughness.

Nat2105 [25]3 years ago

5 0

Answer:

B. The sand increases friction by increasing roughness.

Explanation: bc

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A 4.5-liter sample of a gas has 0.80 mole of the gas. If 0.35 mole of the gas is added, what is the final volume of the gas? Tem

AVprozaik [17]

Answer:

6.5 liters will be your answer

Explanation:

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3 years ago

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Law of Conservation of Mass in terms of atoms

VARVARA [1.3K]

No atoms are lost or made during the chemical reaction so the total mass of the products is equal to the total mass of the reactants. In an atom, protons and neutrons contribute to the mass and since the number of them doesn’t change, the mass doesn’t either.

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3 years ago

Metallic bonds form between what kinds of atoms?

valentinak56 [21]

Answer: A metallic bond is a type of chemical bond formed between positively charged atoms in which the free electrons are shared among a lattice of cations. In contrast, covalent and ionic bonds form between two discrete atoms. Metallic bonding is the main type of chemical bond that forms between metal atoms.

Explanation:

NOT MY WORDS! I HOPE THIS HELP!!!!!

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3 years ago

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Calculate the number of liters in 3.25 g of ammonia

il63 [147K]

The liters in 3.25 g of ammonia 4.28 L

calculation

Step 1: find moles of ammonia

moles = mass÷ molar mass

From periodic table the molar mass of ammonia (NH₃) = 14 +(1×3 ) = 17 g/mol

3.25 g÷ 17 g/mol = 0.191 moles

Step 2: find the number of liters of ammonia

that is at STP 1 moles = 22.4 L

0.191 moles = ? L

by cross multiplication

={( 0.191 moles ×22.4 L) / 1 mole} = 4.28 L

8 0

3 years ago

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) palmitic acid is a 16 carbon acid. in a balanced equation, the products of the saponification of glyceryl tripalmitate (tripal

lesya [120]

Answer: The products of the saponification of glyceryl tripalmitate (tripalmitin) are one molecule of glycerol and three molecules of sodium salt of palmitic acid.

Explanation:

A chemical reaction in which triglycerides react with sodium hydroxide and leads to the formation of one molecule of glycerol and three molecules of a salt of fatty acid is known as saponification.

For example, when tripalmitin reacts with sodium hydroxide then it leads to the formation of one molecule of glycerol and three molecules of sodium salt of palmitic acid.

The reaction equation is as follows.

$C_{51}H_{98}O_{6} + NaOH \rightarrow C_{3}H_{8}O_{3} + 3C_{16}H_{31}O_{2}Na^{+}$

Thus, we can conclude that the products of the saponification of glyceryl tripalmitate (tripalmitin) are one molecule of glycerol and three molecules of sodium salt of palmitic acid.

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3 years ago