3 years ago

What are the five rules for significant figures? Give some examples

1 answer:

4 0

"There are three rules on determining how many significant figures are in a number: Non-zero digits are always significant. Any zeros between two significant digits are significant. A final zero or trailing zeros in the decimal portion ONLY are significant."

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noah rides his bike with a constant speed of 8 km/h. How long will he take to travel a distance of 16 kilometers?

katovenus [111]

Answer:

d/t=s

(divide 16)16/t= 8(divide 16)

t= 0.5 km/h²

Explanation:

Distance: 16 kilometres

Speed: 8 km/h

Time: ?

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2 years ago

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As the temperature of a gas in a closed container increases, what is true of the particles in the substance? (2 points)

Misha Larkins [42]

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Pure hydrogen (H₂) is a hazardous substance. Thus, safer and more cost effective techniques have been developed to store it as a

Paha777 [63]

Answer: hello your question has some missing details attached below is the missing details

answer : 25.5% ( B )

Explanation:

<u>Determine percentage yield </u>

molar mass = 35 g/mol

mass of Li₃N(s) = 70 g

product LiH(s) = 8.0 g ( actual yield )

theoretical yield ( LiH ) = 4 * 7.95 = 31.8 g

percentage yield = actual yield * 100 / theoretical yield

= 8 * 100/31.8

= 25.5%

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2 years ago

Which reaction below represents a balanced, single replacement chemical reaction?

kenny6666 [7]

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I hope this helps you!

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An atom has 20 electrons. Find out

Yanka [14]

Answer:

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