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timama [110]
4 years ago
8

Answer for 15 points!

Chemistry
2 answers:
olya-2409 [2.1K]4 years ago
8 0
The answer is B, because the zinc is dissolved in the copper. The solute is always dissolved in the solvent.
maksim [4K]4 years ago
6 0

The answer B. solute; solvent

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Is a freshly squeezed grapefruit a solution or a mechanical mixture?
Nana76 [90]

Well..... it would be a mechanical mixture because you use mechanical energy when you squeeze it and the mixture is the juice and the pulp.
8 0
3 years ago
The goose has a mass of 19.2 lb (pounds) and is flying at 7.10 miles/h (miles per hour). What is the kinetic energy of the goose
nata0808 [166]

Answer:

43.868 J

Explanation:

Kinetic energy of a body is the amount of energy possessed by a moving body. The SI unit of kinetic energy is the joule (kg⋅m²⋅s⁻²).

According to classical mechanics, kinetic energy = 1/2 m·v²

Where, m= mass in kg and v= velocity in m/s

Given: m = 19.2 lb and v = 7.10 miles/h

Since, 1 lb= 0.453592 kg

∴ m = 19.2 lb = 19.2 × 0.453592 kg = 8.709 kg

Also, 1 mi = 1609.34 m and 1 h = 3600 sec

∴ v = 7.10 mi/h = 7.10 × 1609.34 m ÷ 3600 sec = 3.174 m/sec

Therefore, <u>kinetic energy of the goose</u> = 1/2 m·v² = 1/2 × (8.709 kg)× (3.174 m/sec)² = 43.868 J

5 0
3 years ago
4. You have a 1 M solution of KCl. You need to generate 100 mL of 0.25 M KCl. Explain how you would make this
andrew-mc [135]

1M KCl will require 25 mL to generate 100 mL of 0.25M KCl.

Molarity of a solution is defined as number of moles of solute present in 1000 mL of the solution.

M=\frac{n}{V}\times1000

So molarity is inversely proportional to the volume of the solution.

As solution is diluted. Molarity of the solution decreases.

1M of KCl means 1 mole of KCl in 1000 mL of the solution.

1M KCl is four times as concentrated as 0.25M KCl.

Therefore, to make 100 mL of 0.25M will require \frac{100}{4}= 25 mL of 1M KCl diluted to 100 mL of distilled water.

Easy alternative: Dilution formula

M_1\times V_1 = M_2\times V_2

Where M_1 \,and\, V_1 are volume and concentration of first solution

and M_2\,and\, V_2 are of second solution.

1\times V= 0.25\times100\\\\V= 25\,mL

Learn more about dilution formula here,

brainly.com/question/18917740

#SPJ4

5 0
2 years ago
What phenomenon does the Coriolis effect arise from making it so we see more than two large convection cells on Earth? Curvature
vredina [299]

Answer:

The Coriolis effect is caused by the rotation of the earth around its own axis.

Explanation:

The Coriolis effect arises from the fact that different latitudes of the earth's surface rotate at different speeds. The path of wind on earth is deflected by the Coriolis effect. As things move over the earth, they meet different speed areas, which causes the Coriolis Effect to divert their route.

Thus, The Coriolis effect is caused by the rotation of the earth around its own axis.

7 0
3 years ago
Pl help it’s for a grade
Scrat [10]

Answer:

Answer is A

Explanation:

I dont have an explanation

8 0
3 years ago
Read 2 more answers
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