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4 years ago

Match the mixture with the substance// I really need help on this guys (it’s a pic btw)

Chemistry

1 answer:

koban [17]4 years ago

3 0

Answer:

See below

Step-by-step explanation:

1. Colloid

B) Microscopic insoluble particles that are suspended throughout another substance.

Milk is a colloid. It consists of small fat globules suspended in water.

2. Emulsion

D) Two or more liquids that are not normally mixable.

Mayonnaise is an emulsion. It consists of oil, egg yolks, vinegar, and seasonings. Normally, the oil and vinegar (95 % water) do not mix. Without the egg yolk , they would quickly separate. Egg yolk contains the emulsifier, lecithin, which is attracted to both oil and water and stabilizes he mixture.

3. Solution

A) A solute that is evenly distributed within the solvent.

Sugar syrup is a solution of sugar in water.

4)Homogeneous

C) A mixture that has its components distributed evenly within the substance.

A homogeneous mixture has only one phase. For example, the sugar syrup is homogeneous, because, even with a powerful microscope, you can't see a boundary between the sugar particles and the water.

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A gas system has volume, moles and temperature of 9040 mL, 0.447 moles and -35.50 oC, respectively. What is the pressure in atm?

babymother [125]

Answer : The pressure of the gas is, 0.964 atm

Solution : Given,

Volume of gas = 9040 ml = 9.040 L (1 L = 1000 ml)

Moles of gas = 0.447 moles

Temperature of gas = $-35.50^oC=237.5K$ $(0^oC=273K)$

Using ideal gas equation,

$PV=nRT$

where,

P = pressure of the gas

V = volume of the gas

T = temperature of the gas

n = number of moles of gas

R = gas constant = $0.0821Latm/moleK$

Now put all the given values in this formula, we get the pressure of the gas.

$P(9.040L)=(0.447moles)\times (0.0821Latm/moleK)\times (237.5K)$

By rearranging the terms, we get

$P=0.964atm$

Therefore, the pressure of the gas is, 0.964 atm

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3 years ago

Which three factors are the most important in determining the composition of ocean water?

pogonyaev

Your answer would be A. <span>temperature, salinity, and density. Hope this helps you!</span>

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3 years ago

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A typical carbon monoxide detector will sound it's alarm if it detects 0.050 g of CO, HOw many molecules of carbon monoxide are

Colt1911 [192]

Answer:

1.07×10²¹ molecules are needed to sound the alarm

Explanation:

Let's convert the mass of CO to moles, to determine the amount of molecules.

0.05 g . 1 mol / 28 g = 1.78×10⁻³ moles

Now we can determine the number of molecules with the NA

1 mol has 6.02×10²³ molecules

1.78×10⁻³ moles may have (1.78×10⁻³ . 6.02×10²³) / 1 = 1.07×10²¹ molecules

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3 years ago

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pickupchik [31]

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3 years ago

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Which of the following conditions must be met for a volume ratio to be created from a balanced chemical equation?

Gnesinka [82]

Answer: Option (b) is the correct answer.

Explanation:

According to ideal gas law, the product of pressure and volume is equal to the product of number of moles, gas constant and temperature.

Mathematically, PV = nRT

So, when there are two gases with equal number of moles behaving ideally then the ideal gas equation will be as follows.

$\frac{P_{1}V_{1}}{T_{1}}$ = $\frac{P_{2}V_{2}}{T_{2}}$

and $\frac{V_{1}}{V_{2}}$ = $\frac{P_{2}T_{1}}{P_{1}T_{2}}$

Hence, when temperature and pressure of both the gases will be constant then $\frac{V_{1}}{V_{2}}$ = 1.

Thus, we can conclude that constant temperature and pressure is the conditions that must be met for a volume ratio to be created from a balanced chemical equation.

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3 years ago

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