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Hitman42 [59]
3 years ago
10

Question 7 (1 point)

Chemistry
1 answer:
nadya68 [22]3 years ago
7 0

Answer:

A} Kinetic chemical energy

Explanation:

i took the quiz.

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Rainbow [258]

Answer:

nitrit,nitrat

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3 years ago
Nora's family went camping. Which way did her family MOST LIKELY produce heat energy while camping? A. By burning B. By friction
strojnjashka [21]

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B friction is where you rub your something togother and it heats it up so B

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3 years ago
Calculate the mass (g) of 1.5 moles of Sulfur. ​
just olya [345]

Answer:

48 g S

Explanation:

Step 1: Define

Molar Mass of Sulfur (S) - 32.07 g/mol

Step 2: Use Dimensional Analysis

1.5 \hspace{3} mol \hspace{3} S(\frac{32.07 \hspace{3} g \hspace{3} S}{1 \hspace{3} mol \hspace{3} S} ) = 48.105 g S

Step 3: Simplify

We have 2 sig figs.

48.105 g S ≈ 48 g S

7 0
3 years ago
What is the different between a mixture and a compound?
krek1111 [17]
A compound is 2 or more substances chemically combined, mixtures arent

4 0
3 years ago
If 3.50 g of the unknown compound contained 0.117 mol of c and 0.233 mol of h, how many moles of oxygen, o, were in the sample?
makvit [3.9K]
To determine the amount of oxygen that is present in the compound, we have to assume that the given compound contains carbon, hydrogen and oxygen only or else we will not be able to determine the answer. We need to convert the moles of the elements given to units of grams by using the atomic mass of these elements. Then, from the total amount of the compound we subtract the masses of the elements. We do as follows:

                                                             mass
0.117 mol C ( 12.01 g / 1 mol ) =        1.41 g  
0.233 mol H ( 1.01 g / 1 mol )   =        0.24 g

Mass O = 3.50 g - 1.41 g - 0.24 g = 1.85 g O
Moles O = 1.85 g O ( 1 mol / 16 g ) = 0.116 moles O
6 0
3 years ago
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