3 years ago

Below is a list of substances. Some are mixtures and some are not. Select all of the substances which are homogeneous.

Chemistry

1 answer:

Papessa [141]3 years ago

6 0

B the atmosphere

D. gasoline

C. a carbonated soft drink (without bubbles)

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What is a common feature of elements in group 1, group 2 and group 3?

Papessa [141]

Answer:

all of them have seven valence electron

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2 years ago

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calculate the concentration of silver in a 100.0 mL solution of silver bromide at 25oC (298 K) when the Ksp is 5.0 x 10-13

Sliva [168]

Answer:

Concentration AgBr at saturation = 7.07 x 10⁻⁷M

Explanation:

Given AgBr(s) => Ag⁺(aq) + Br⁻(aq) ; Ksp = 5 x 10⁻¹³ = [Ag⁺][Br⁻]

I --- 0 0

C --- +x +x

E --- x x

[Ag⁺][Br⁻] = (x)(x) = x² = 5 x 10⁻¹³ => x = SqrRt(5 x 10⁻¹³) = 7.07 x 10⁻⁷M

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2 years ago

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Vinil7 [7]

Answer:

3 Handsprings

Explanation:

18 divided by 6 is 3

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2 years ago

An unknown liquid is composed of 34.31% c, 5.28% h, and 60.41% i. The molecular weight is 210.06 amu. What is the molecular form

ozzi

In an unknown liquid, the percentage composition with respect to carbon, hydrogen and iodine is 34.31%, 5.28% and 60.41% respectively.

Let the mass of liquid be 100 g thus, mass of carbon, hydrogen and oxygen will be 34.31 g, 5.28 g and 60.41 g respectively.

To calculate molecular formula of compound, convert mass into number of moles as follows:

$n=\frac{m}{M}$

Molar mass of carbon, hydrogen and iodine is 12 g/mol, 1 g/mol and 126.90 g/mol.

Taking the ratio:

$C:H:I=n_{C}:n_{H}:n_{I}$

Putting the values,

$C:H:I=\frac{34.31 g}{12 g/mol}:\frac{5.28 g}{1 g/mol}:\frac{60.41 g}{126.90 g/mol}=6:11:1$

Thus, molecular formula of compound will be $C_{6}H_{11}I$ .

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2 years ago

What are the gaps to this

zheka24 [161]

In a liquid, particles are close together but can move in any direction. They won't keep a definite shape like solids do.

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