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iogann1982 [59]
3 years ago
12

What is the simplest formula for Sr4S4?

Chemistry
1 answer:
Mashcka [7]3 years ago
4 0
The simplest formula  is 
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Compared to the mass and the penetrating power of an alpha particle, a beta particle has(1) less mass and greater penetrating po
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Answer is (1) - less mass and greater penetrating power.


Alpha particle is a ₂⁴He nucleus while beta particles are electrons. Hence, the mass of alpha particle is greater than the mass of beta particle. But, the penetrating power is higher in beta particle than alpha particle. Alpha particles can be blocked by few papers but beta particles can go through those papers.

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A cyclist travels 60 km in 2 hours .What is his average speed?
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Explanation:

Mike drives his car 60 km in 55minutes. What is its average speed in kilometers per hour ? A train travels 120 km in 2 hours and 30 .

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3 years ago
Your answer should have the same number of significant figures is the start of measurement 400.08mL —— L
Eddi Din [679]
The answer would be .40008L

The word milli- translates to \frac{1}{1000} units. In this case, we have liters as our base unit. So a milliliter is \frac{1}{1000} Liters or you can say that there are:

1,000 mL in 1 L. 

As I understand, you are trying to convert 400.08mL to L. 

So this is how you are going to get it:

400.08mL x \frac{1L}{1,000mL}
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3 0
4 years ago
How many grams are in 2.5 moles of Carbon
Jet001 [13]
According to the periodic table, carbon's molar mass is 12.011 grams per mole (that's the small number under the element).  So, just multiply like this to get the answer:

(2.5\ mol\ C)(\frac{grams\ C}{12.011\ mol\ C})=0.20814\ g\ C

So, there are approximately 0.208 grams in 2.5 moles of carbon.
6 0
3 years ago
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