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zavuch27 [327]
3 years ago
11

What is one way that electric charges are different from magnetic poles?

Chemistry
1 answer:
sashaice [31]3 years ago
5 0
The answer is A. As the first statement is a true statement. Hope this help you
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Rick is creating a love potion for Morty. To make the potion, Rick's needs 51 mL of a mixture solution where 40% is carbonated w
Deffense [45]

Answer:

The amount of the first solution rick needs to mix together to create the love portion is 8.5 mL

Explanation:

So as to make the love potion, we have;

The percentage of carbonated water in the love portion = 40%

The percentage of green tea in the first solution = 65%

The percentage of carbonated water in the first solution = 15%

The percentage of whole milk in the first solution = 20%

The percentage of orange juice in the second solution = 17%

The percentage of lemonade in the second solution = 38%

The percentage of carbonated water in the second solution = 45%

Let 'x' represent the volume in mL of the first solution added to make the love portion, and let 'y' be the volume in mL of the second solution added to make the love portion, we have;

x + y = 51...(1)

0.15·x + 0.45·y = 0.40×51 = 20.4

0.15·x + 0.45·y = 20.4...(2)

Solving the system of simultaneous equation by making 'y' the subject of each of the equation gives;

For equation (1)

y = 51 - x

For equation (2)

y = 20.4/0.45 - (0.15/0.45)·x = 136 - 3·x

y = 136/3 - (1/3)·x

Equating the two equations of 'y', gives;

51 - x = 136/3 - (1/3)·x

51 - 136/3 = x - (1/3)·x

17/3 = (2/3)·x

(2/3)·x = 17/3

x = (3/2) × (17/3) = 17/2 = 8.5

x = 8.5

y = 51 - x = 42.5

y = 42.5

Therefore, the amount of the first solution rick needs to mix together to create the love portion, x = 8.5 mL

8 0
3 years ago
How many grams of carbon dioxide are produced from the combustion of 1.3 moles of acetylene
Karo-lina-s [1.5K]
Complete combustion of acetylene generated carbon dioxide and water. This can be represent by following reaction

2C2H2   +    5O2     →      4CO2     +     2H2O
(2 mole)                            (4 mole)

From the above balanced reaction, it can be seen that 2 mole of acetylene on complete combustion generates 4 moles of carbon dioxide
i.e. 2 mole of C2H2 ≡ 4 mole of CO2
∴ 1.3 mole of C2H2 ≡ (4 X 1.3)/2 = 2.6 mole of CO2

Now, 1 mole of CO2 = 44 g
∴ 2.6 mole of CO2 = (44 X 2.6) = 114.4 g

Thus,  <span>114.4 grams of carbon dioxide are produced from the combustion of 1.3 moles of acetylene</span>
8 0
4 years ago
Air thermals are updrafts of warm air that rise from
Anastaziya [24]

Answer:

B. convection because warm air rises and cool air sinks.

Explanation:

The processes that enables birds to fly to higher altitudes without flapping their winds while riding air thermals is called convection.

Convection is one of the forms of heat transfer usually found in gases and liquids.

  • In convection density differences due to temperature changes causes the circulation.
  • Warm air is less dense and it is hotter.
  • It rises up from the surface where it is warmed
  • Cold air sinks to replace the warm air. Cold air form when the air loses its energy to the surrounding.
  • By virtue of this, birds are able to take advantage of it for their flight.
7 0
3 years ago
At 20 degrees Celsius the density of mercury is 13.6 g/cm cubed. What is the mass of 50.0 ml of mercury at 20 degrees Celsius?
Lynna [10]

Answer:

680g of mercury is the mass of the sample of mercury.

Explanation:

Density is an unit used to relates the mass of an object per unit of volume.

For example, in the problem, the density of mercury is 13.6g/cm³, as cm³ is equal to milliliters, mL, the density is: 13.6g/mL.

If you have 50.0mL of mercury, the mass is:

50.0mL * (13.6g / mL) =

<h3>680g of mercury is the mass of the sample of mercury.</h3>
4 0
3 years ago
What is 2000lbs in 1 ton
liq [111]
You've answered your question it is 1 ton
3 0
3 years ago
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