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Klio2033 [76]
4 years ago
11

Light is shining in the different objects shown. which of these materials absorbs the light most?

Chemistry
2 answers:
never [62]4 years ago
5 0
Hey! Ur in K12 2! I am in K12. lol. Anyways, the answer would be D. I think I've done this lesson before
dolphi86 [110]4 years ago
3 0
I am almost 100% sure that it is D
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Question 3 (1 point)
pentagon [3]

Full question:

The IUPAC name for  CH3CH2C≡CCH3 is:

Answer:

2-pentyne

Explanation:

To name hydrocarbons, you first you have to identify the longest carbon chain.  There are 5 carbons in this chain, so we know the name is "pent".

You then have to identify the presence of any double or triple bonds. If double bonds, it is an alkene, if triple bonds, it is an alkyne. In this case there is a triple bond, so we know the hydrocarbon is pentyne.

You then number the chain to give the lowest number to the triple bond. It could either be 4 (countnig carbons from left to right) or 2 (from right to left). Therefore, the answer is 2-pentyne.

5 0
4 years ago
Which of the following is the best example of a closed system?
Leona [35]
<span>c. A jar of pond water with a lid on it (: hope this helps!</span>
3 0
3 years ago
Read 2 more answers
What would be the most likely explanation if none of the tested paint samples had turned brown?
mariarad [96]

Answer:4/d

Explanation:

i did this before

7 0
3 years ago
During the naval battles of the South Pacific in World War II, the U.S. Navy produced smoke screens by spraying titanium tetrach
hammer [34]

Explanation:

The reaction given is;

TiCl4 + H2O --> TiO2 + HCl

The reaction is not balanced, upon balancing it is given as;

TiCl4 + 2H2O → TiO2 + 4HCl  

a. How many moles of H2O are needed to react with 6.50 moles of TiCl4?

From the reaction;

1 mol of TiCl4 requires 2 mol of H2O

6.50 mol of TiCl4 would require x mol of H2O

1 = 2

6.5 = x

x = 6.5 * 2 / 1 = 13.0 mol

b. How many moles of HCl are formed when 8.44 moles of TiCl4 react?

From the equation of the reaction;

1 mol of TiCl4 reacts to form 4 mol of HCl

8.44 mol of TiCl4 reacts to form x mol of HCl

1 = 4

8.44 = x

x = 8.44 * 4 / 1 = 33.76 mol

4 0
3 years ago
I NEED HELP PLEASE, THANKS! :)
Free_Kalibri [48]

Answer:

Cs

Explanation:

Metallic character increases across a period to the left and downwards.

If you look at the periodic table, Cs is lower and more towards the left.

7 0
4 years ago
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