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Anna71 [15]
3 years ago
12

Which of these common substances is a mixture?

Chemistry
2 answers:
Gennadij [26K]3 years ago
6 0

Answer:

D

Explanation:

A is a compound

B is purified water

C is a substance made by two substances

Hope this helps

ivolga24 [154]3 years ago
5 0
B .pure water it’s made up of oxygen and hydrogen “H2O”
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Propane (C₃H₈) burns in oxygen to produce carbon dioxide and water. What is the correct form of the chemical equation that descr
V125BC [204]

Answer:

The answer to your question is below

Explanation:

Propane is a hydrocarbon that has only single bonds in its structure so it is an alkane.

Propane formula = C₃H₈

Oxygen formula = O₂

Carbon dioxide formula = CO₂

Water formula = H₂O

<u>Reaction:</u>

                         C₃H₈  +   5O₂   ⇒    3CO₂   +   4H₂O

                  Reactants            Elements     Products

                          3                          C                    3

                          8                          H                    8

                         10                         O                   10

6 0
3 years ago
Carbon disulfide burns in oxygen to yield car- bon dioxide and sulfur dioxide according to the chemical equation cs2(l) 3 o2(g)
vampirchik [111]

Answer: Oxygen is the limiting reagent.

Explanation: CS_2(l)+3O_2(g)\rightarrow CO_2(g)+2SO_2(g)

As can be seen from the given balanced equation:

3 moles of O_2 reacts with 1 mole of CS_2

1.52 moles of O_2 reacts with=\frac{1}{3}\times 1.52=0.51moles of CS_2

Thus O_2 is the limiting reagent as it limits the formation of products. (0.91-0.51)= 0.40 moles of CS_2 will remain as such and thus  CS_2 is an excess reagent.

6 0
3 years ago
Please help :)<br> I don’t know what to do
3241004551 [841]

Answer:

1. MgCl2 + Zn -> Mg + ZnCl2

2. 2Al + 6H2O(g) -> 2Al(OH)3 + 3H2

3. 2Cd + O2 -> 2CdO

4. I2 + KF -> it's not going to react

5. Zn + H2SO4 -> ZnSO4 + H2

6.2KBr + Cl2 -> 2KCl + Br2

7. AgNO3 + Na -> NaNO3 + Ag

8. 2NaCl + F2 -> 2NaF + Cl2

9. AgNO3 + Mg(NO3)2 + Ag

10. Ni + H2SO4 -> NiSO4 + H2

11. Al + K2SO4

12. FeCl3 + 3Mn-> 3MnCl + Fe

13. 2Na + 2H2O -> 2NaOH + H2

14. 2K + MgBr2 -> 2KBr + Mg

15. Zn + Pb(NO3)2 -> Pb + Zn(NO3)2

16. 2AlBr3+ 3Cl2 -> 2AlCl3 + 3Br2

3 0
4 years ago
Blah blah lbha<br> 240983543ygfhtgfjihdiujkajgldkrfjjhgk;jrjhkltdfj
notka56 [123]
The answer’s in the picture

5 0
3 years ago
What rules should you follow when adding and subtracting? Check all that apply.
GaryK [48]

Answer:

The answer to this question would be:  

2. The exponents need to be the same so the leading numbers can be added or subtracted.

3. The result has the same number of decimal places as the least precise number.

The exponent is the 10^x that used in scientific notation. .When adding 12.3* 10^5 with 34.56 * 10^4, you need to make the exponent same first. In this case, it would become 12.3* 10^5 + 3.456 * 10^5= 15.756* 10^5

The decimal place could be rounded up to the least precise number. I'm not sure with the significant figures but it seems to use the biggest one.

Explanation:

brainly.com/question/7413247

5 0
3 years ago
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