Chemistry, 03.08.2019 02:30 jaays4286

Which of these is a compound? salt water salad carbon dioxide or potassium

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The correct answer is carbon dioxide.

Carbon dioxide is contained of carbon and oxygen atoms which are chemically combined together. They cannot be separated by just using simple physical methods such as decantation or evaporation. They can only separate into carbon and oxygen using chemical method such as electrolysis. These are some properties of what compound has.

In opposite, salt water, is a mixture. It can easily be separated back into salt and water by using methods like evaporation or crystallization.

Salad is also a mixture, it is mixed of different food that are made from different molecules such as cabbage, sauce, apples etc.

And Potassium is an element. It cannot be further separated into anything simpler. It is not a compund.

So, the only correct answer here is carbon dioxide.

Answer from: st3ph

The correct answer is C, carbon dioxide

Answer from: Quest

water is used to store them because it would keep the radiation from getting out in the open and causing harm to the workers

Answer from: Quest

1.consider the following balanced equation and answer parts a through. show calculations for each part.

3 ag(s) + 4 hno3(aq) → 3 agno3(aq) + no(g) + 2 h2o(l)

a. calculate the number of moles of agno3 produced by the reaction of 3 moles of ag with excess hno3. if the number to the left of the compound represents the number of moles of the compound which are present, then 3 moles of ag react with 4 moles hno3 to produce 3 moles agno3 (aq).

so the answer to a would be 3 moles.

b. calculate the number of moles of agno3 produced by the reaction of 108 grams of ag with excess hno3.

i'm not sure how to plug in the grams of silver into an equation using moles to find how many moles are produced.

c. calculate the number of grams of agno3 produced by the reaction of 108 grams of ag with excess hno3

d. calculate the number of moles of no produced as a byproduct of the reaction of 108 grams of ag with excess hno3.

e. calculate the number of grams of no produced as a byproduct starting with 108 grams of ag and excess hno3.

explanation:

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Which of these is a compound? salt water salad carbon dioxide or potassium...