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madreJ [45]
2 years ago
5

50 Points

Chemistry
2 answers:
Vesnalui [34]2 years ago
8 0

Answer:

C, Si, Ge, Sn

Explanation:

yawa3891 [41]2 years ago
3 0

Answer:

si,ge,sn

Explanation:

i looked at a periodic table

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Use the periodic table to calculate the percent composition of hydrogen in hexane.
valina [46]

Answer:

A)16.3% (Hexane's formula is C6H14)

3 0
2 years ago
A gas occupies 1.00 L at standard temperature. What is the volume at 333.0°C?
AURORKA [14]
We use Charles's Law: V1/T1=V2/T2

Standard Temperature: 0 degree Celsius= 273K
333.0 degrees Celsius= 606K

Set up: (1.00L)/ (273K)= V2/ (606.0K)
⇒ V2= (1.00L)/ (273K)* (606.0K)= 2.22L

Hope this would help :))

7 0
3 years ago
Catalase is an enzyme that speeds up the breakdown of hydrogen peroxide in cells. During this reaction oxygen is given off. A sc
Softa [21]

Answer:

The correct option is A

Explanation:

An independent variable is <u>a variable that is intentionally altered (directly or indirectly) and is not dependent on another variable</u> in the course of an experiment. Unlike the independent variable, the dependent variable depends or is presumed to depend on the altered independent variables.

From the explanation above, it can be deduced that the concentration of the catalase is the independent variable as it was intentionally altered (by using different concentrations) in the course of the experiment. The amount of oxygen given off is the dependent variable here

6 0
3 years ago
Do you think it is a good idea for all scientists to use the same periodic table of elements? Why or why not?
postnew [5]
Yes because what other else can a scientist have
7 0
3 years ago
A SCUBA diver with a 4-liter lung capacity is at a depth of 135 feet (4 atm.) She ascends to the surface where the
Nostrana [21]

Answer:

16L

Explanation:

Data obtained from the question include:

V1 (initial volume) = 4L

P1 (initial pressure) = 4atm

P2 (final pressure) = 1atm

V2 (final volume) =?

Using Boyle's law equation P1V1 = P2V2, the new volume can be obtain as follow:

P1V1 = P2V2

4 x 4 = 1 x V2

16 = V2

V2 = 16L

Therefore, her new lungs volume is 16L

5 0
3 years ago
Read 2 more answers
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