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Black_prince [1.1K]
3 years ago
8

Select the two statements that are TRUE about compounds

Chemistry
1 answer:
patriot [66]3 years ago
4 0

a) a compound always contains at least 2 elements

is the answer

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Quick question plz . .....Which one of the following is acidic oxide?
dedylja [7]

Answer:

B

Explanation:

its an acidic oxide, it disolves in water to form carbonic acid which is an acid

8 0
3 years ago
How many moles of solute are in 53.1 mL of 12.5M HCI?
Deffense [45]
Molarity = moles of solute/volume of solution in liters.

From this relation, we can figure out the number of moles of solute by multiplying the molarity of the solution by the volume in liters.

We have 53.1 mL, or 0.0531 L, of a 12.5 M, or 12.5 mol/L, solution. Multiplying 12.5 mol/L by 0.0531 L, we obtain 0.664 moles. So, in this volume of solution, there are 0.664 moles of solute (HCl).
6 0
2 years ago
Which substance is commonly used to produce biomass fuel?
Lorico [155]

Answer:

Corn stalks  

Explanation:

Biomass fuel is produced by living or once-living organisms.

The most common biomass fuels used for energy come from plants, such as corn and soy.

B is wrong. Yellowcake is a refined form of uranium ore.  

C and D are wrong. Coal and natural gas are not biomass fuels.

8 0
3 years ago
If a car jack's output force is 1000 N and the mechanical advantage is 6.8, what is the input force?
Travka [436]
Answer
147.06N
Explanation:
MA=Load/Effort
6.8=1000/x
Finding x you make x the subject and divide 1000 by 6.8 which is 147.06N
4 0
2 years ago
What most likely happens when water loses heat?
astraxan [27]
If water loses heat then it will become cold and as the water becomes cold it starts forming these little bubbles around the glass. If you want extra information search up *Why are there bubbles in my water?* and it will give you the information right on the page if you're using a Google browser! Hint Hint! it has to do with nitrogen! 

~Pinkachumoo 

Which you the best! 
5 0
3 years ago
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