3 years ago

Which statement best describes comparative and descriptive investigations?

Chemistry

2 answers:

sleet_krkn [62]3 years ago

8 0

Answer:

its the first one

Explanation:

scZoUnD [109]3 years ago

3 0

Answer:

They both include a question,procedure and conclusion.

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How many molecules in 11 grams of CO2?

yawa3891 [41]

Answer:

1095.62

Explanation:

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2 years ago

A 0.8kg object displaces 500ml of water what is its specific gravity

worty [1.4K]

Specific gravity is the ratio of density of substance and density of water

We know that density of water = 1 g /mL at standard conditions

now as given that the 0.8 Kg of the substance / object is able to displace 500mL of water , it means that

Mass of object = 800g

The volume occupied by 800g of object = 500 mL

Density = mass / volume

Density of object = 800 / 500= 1.6 g / mL

The specific gravity of object = density of object / density of water = 1.6 / 1 = 1.6 (no units)

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2 years ago

1 A pump with an 80% efficiency drives water up between two reservoirs through a piping system of total length L = 15 and circul

LenKa [72]

The correct answer to this question is that the length of 14 is it’s half Which would be 7

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1 year ago

A 3000 MWt fast reactor has a 42% efficiency. This reactor operates for 23 months followed by a 1 month down time for refueling

n200080 [17]

Answer:

capacity factor = 0.952

Availability factor = 0.958

Explanation:

1) capacity factor

capacity factor = actual power output / maximum power output

= (actual power output)/(efficiency * rated power output)

$= \frac{1200}{\frac{42}{100}*3000}$

= 0.952

2) Availability factor

Availability factor = Actual operation time period/ total time period

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2 years ago

Fill in the blanks. The celestial bodies in space move about in predictable paths called

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Answer:

Magnetic fields, revolve, asteroids

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2 years ago

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