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goblinko [34]
3 years ago
13

Plz helppppppppppppppppp

Chemistry
1 answer:
exis [7]3 years ago
5 0

Brass is a homogeneous mixture.

In the liquid state, the copper and zinc formed a solution.

They did not separate from each other when the brass solidified.

Thus, brass is a solid solution.

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An emulsifying agent is typically characterized by having ____. a. one polar end c. two polar ends b. one nonpolar end d. one po
tangare [24]

Answer:

An emulsifying agent is typically characterized by having <u><em>d. one polar end and one nonpolar end.</em></u>

Explanation:

Emulsifiers are substances that have the ability to bind, for example, fats with those substances that have mostly water in their conformation. In other words, the emulsifier facilitates mixtures of two or more immiscible liquid substances.

This is because the molecules of an emulsifier are often lipophilic (attract oil) at one end and hydrophilic (attract water) at the other. In other words it consists of a polar (hydrophilic) head group and a non-polar (hydrophobic) tail.

<u><em>An emulsifying agent is typically characterized by having d. one polar end and one nonpolar end.</em></u>

4 0
3 years ago
Based on this simulation, how does the greenhouse keep plants warm? Use "infrared photons" in your explanation.
frez [133]

Answer: During the day, a typical greenhouse will trap Infrared photons from the sun, which allows the plants inside to stay warm at night. ... The much needed sunlight will still come through but the extra layer of protection will keep your plants safe at night

Explanation: Hope that helps :)

6 0
3 years ago
Read 2 more answers
What net force is required to push a sofa with a mass of 59 kilograms so that it accelerates at 9.75 meters/second^2
Tresset [83]
Force = Mass * Acceleration = 59 kg * 9.75 m/s^2 = 575.25 N
6 0
4 years ago
Read 2 more answers
Which of the following is NOT a reason why chemical bonds are important? *
KengaRu [80]

Answer:

the answer would be B :)

3 0
4 years ago
A 500. mL gas sample is collected over water at a pressure of 740 mmHg and 25.0 °C. What is the volume of the dry gas at STP?
Lera25 [3.4K]

Answer:

Volume of dry gas at STP = 0.432 liters or 432 ml

Explanation:

Given:

Pressure (P) = 740 mmHg - 24 mmHg = 716 mmHg

Temperature (t) = 25 degrees C + 273 K = 298 K

500 ml = 0.5 l

Find:

Volume of dry gas at STP

Computation:

[P1][V1] / T1 = [P2][V2] / T2

[716][0.5] / 298 K = [760][ x Liters] / 273 K

x = 0.432 Liters

Volume of dry gas at STP = 0.432 liters or 432 ml

7 0
4 years ago
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