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prisoha [69]
3 years ago
13

Please help its due tonight!!! also no links allowed.

Chemistry
1 answer:
irga5000 [103]3 years ago
4 0

Answer: well 18°C is really cool the mass of the water sample would be 28242 yeah that's right

Explanation:

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Metallic element are _____ (conductors or non-conductors), because ________. Nonmetallic elements are generally ____ (conductors
STatiana [176]

Answer:

Metallic element are conductors, because it shows north and south pole. Nonmetallic elements are generally non-conductors. Pure solidionic compounds are conductors, because they are found in solid state, but molten ionic compounds are conductors or non-conductors), because ionic component show property of metal.Pure molecular compounds are generally (conductors or non-conductors). A concentrated aqueous solution of a strong acid such as HCl is a (conductor ornon-conductor), because. As the concentration of the HCl solution decreases, the conductance increases), because Mixtures of metalsare non-conductors), because it doesn't show property of metal.

5 0
3 years ago
When converting from grams to the must be used as a conversion factor
Anna35 [415]
Moles=grams/molar mass
4 0
3 years ago
A tank originally contains 100 gallons of fresh water. Then, water containing 0.5 lb of salt per gallon is poured into the tank
ValentinkaMS [17]

Answer:

The amount of salt in the tank at the end of an additional 10 minutes are 4.38lb.

Explanation:

<u>Situation 1:</u>

Tank with 100 gallons of fresh water

<u>Situation 2:</u>

Tank with 100 gallons of fresh water + water with 0.5lb of salt per gallon

After 10 minutes, as the rate in which the new water is poured is 2 gallons per minute, the result is 20 gallons added (2×10=20) . And taking in account that the water contains 0.5 lb of salt per gallon the amount of salt added is 20×0.5= 10lb of salt.

That amount of salt is now in all the water inside the tank which is 100 gallons+ 20 gallons= 120 gallons. <em>That means that in situation 2 we have 10lb of salt in 120 gallons of water.</em>

That mixture is allowed to leave the tank at a rate of 2 gallons per minute so we will have after 10 minutes: 120 gallons- (2×10) gallons= 100 gallons remaining in the tank. And the amount of salt if we remember that we had 10lb in 120 gallons, now in 100 gallons we will have: (100 gallons × 10lb of salt)/  120 gallons= 8.33 lb of salt.

<u>Situation 3:</u>

Tank with 100 gallons of water with 8.33lb of salt.

After 10 minutes in which fresh water is poured in the tank at a rate of 9 gallons per minute, the result is: 9×10= 90 gallons added to the tank. So now we have 100+90=190 gallons of water in  the tank. <em>That means in situation 3 we have 8.33 lb of salt in 190 gallons of water. </em>

That mixture is leaving the tank at a rate of 9 gallons per minute so we have after 10 minutes: (190- (9×10))= 100 gallons of mixture remaining in the tank.

And the amount of salt if we remember that we had 8.33lb in 190 gallons, now in 100 gallons we will have: (100 gallons × 8.33lb of salt)/  190 gallons= 4.38 lb of salt.

7 0
3 years ago
How can heat from the sun transfer from the cement to your feet
Svet_ta [14]
The sun is beating down on the concrete. it's a hot day, and you're in the house where it's conditioned. Your feet are fairly cool. When you step outside on the concrete the coldness in your feet seep into the concrete, and the heat from the concrete takes the cold away. It's like when a pot is on the stove, the pan transfers all it's cold to the hot, and the fire replaces the cold. Hope this helps!
6 0
3 years ago
Please help!!!!!!!!!​
Alika [10]

Answer

At the crust

Explanation:

Mantle is far away from it unless its in a ocean.

3 0
2 years ago
Read 2 more answers
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