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4 years ago

Is acetone a compound, an element or heterogeneous or homogeneous

Chemistry

2 answers:

Troyanec [42]4 years ago

6 0

It's a compound. It s not any of the other options.

makvit [3.9K]4 years ago

4 0

Answer:

Acetone is a compound.

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Consider the following equilibrium:

Veseljchak [2.6K]

Answer:

Explanation:

Buffer has equal concentrations of A- and HA.

B. when [F -] is equal to [HF]

3 0

3 years ago

Read 2 more answers

Calculate the number of hydrogen atoms in a sample of hydrazine . Be sure your answer has a unit symbol if necessary, and round

gladu [14]

Answer:

$atoms \ H= 9.767x10^{24}atoms$

Explanation:

Hello!

In this case, considering that the mass of hydrazine is missing, we can assume it is 130.0 g (a problem found on ethernet). In such a way, since we need a mass-mole-atoms relationship by which we can compute moles of hydrazine given its molar mass (32.06 g/mol), then the moles of hydrogen considering one mole of hydrazine has four moles of hydrogen and one mole of hydrogen has 6.022x10²³ atoms (Avogadro's number); therefore, we proceed as shown below:

$atoms \ H=130.0gN_2H_4*\frac{1molN_2H_4}{32.06gN_2H_4} *\frac{4molH}{1molN_2H_4} *\frac{6.022x10^{23}atoms}{1molH}\\\\atoms \ H= 9.767x10^{24}atoms$

Notice 130.0 g has four significant figures, therefore the result is displayed with four as well.

Best regards!

7 0

3 years ago

NH3 + HCI —> NH4CI synthesis O decomposition O single replacement O double replacement

wlad13 [49]

Answer:

synthesis

Explanation:

The reaction given is a synthesis reaction or combination reaction.

Given equation:

NH₃ + HCl → NH₄Cl

In a synthesis reaction, a single product is formed from two or more reactants

A + B → C

The formation of compounds from the union of constituent elements also falls into this category.

So the given reaction is a synthesis reaction.

In a decomposition reaction two or more products are formed from a single reactant

In a single replacement reaction, one substance replaces another.

In double replacement reactions partners in a chemical specie are exchanged.

Therefore the given reaction is a synthesis reaction

8 0

3 years ago

Would Cu be oxidized by Ag+?

Fed [463]

It oxidized cu since it gains electons.

3 0

4 years ago

If a 1.271-g sample of aluminum metal is heated in a chlorine gas atmosphere,

Gala2k [10]

Answer:

AlCl₃

Explanation:

Data Given:

Mass of aluminum metal = 1.271 g

Mass of aluminum chloride = 6.280 g

Empirical formula of aluminum chloride = ?

Solution:

First find mass of Chlorine

As 6.280 g of aluminum chloride produced by 1.271 g so

the mass of chlorine in 6.280 g will be 6.280 g -1.271 g)

Mass of chlorine = 5.009 g

Now

Find the number of moles of Al and chlorine in aluminum chloride.

Molar Mass of Al = 26.98 g/mole

Molar mass of Cl = 35.5 g/mol

Mole of Al

Formula Used

no. of moles = mass in grams / molar mass . . . . . . . . (1)

Put values in equation 1

no. of moles of Al = 1.271 g / 26.98 g/ mole

no. of moles of Al = 0.0471

Mole of Chlorine

Formula used

no. of moles = mass in grams / molar mass . . . . . . . . (1)

Put values in equation 1

no. of moles of Cl = 5.009 g / 35.5 g/ mole

no. of moles of Cl = 0.1411

Now we have

Al = 0.0471 moles

Cl = 0.1411 moles

As we Know

Empirical formula shows the simplest ratio of atoms in the molecule but not whole numbers of atoms in a compound.

So,

The ratio of moles of Al to chlorine is

Al : Cl

0.0471 0.1411

Divide the ratio by smallest number to get simplest whole number ratio

Al : Cl

0.0471 / 0.0471 0.1411/ 0.0471

Al : Cl

1 : 3

The simplest ratio of Al to cl is 1 to 3, so the formula will be

Emperical formula of aluminum chloride = AlCl₃

7 0

3 years ago