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3 years ago

PLEASE ANSWER THIS QUESTION AS SOON AS POSSIBLE! 20 Pts

Chemistry

2 answers:

lidiya [134]3 years ago

7 0

We have learned that all organisms have many the answers is a tiger

goldfiish [28.3K]3 years ago

4 0

Bird, Tiger, and the Leech

1.) Movement

All living things move in some way. This may be obvious, such as Tigers are able to walk, or less obvious, such as plants that have parts that move to track the movement of the sun.

Leeches use circular and longitudinal muscles to move along

2.) Growth

All living things grow. For example the Blue Jay (bird) pictured above started out as an egg and developed into a bird

3.) Excretion

No matter what living thing it is, everything gives off waste. For example a leeche poops out it’s unneeded “nutrients”

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At a festival, spherical balloons with a radius of 280. Cm are to be inflated with hot air and released. The air at the festival

evablogger [386]

Answer:

8608.18 balloons

Explanation:

Hello! Let's solve this!

Data needed:

Enthalpy of propane formation: 103.85kJ / mol

Specific heat capacity of air: 1.009J · g ° C

Density of air at 100 ° C: 0.946kg / m3

Density of propane at 100 ° C: 1.440kg / m3

First we will calculate the propane heat (C3H8)

3000g * (1mol / 44g) * (103.85kJ / mol) * (1000J / 1kJ) = 7.08068 * 10 ^ 6 J

Then we can calculate the mass of the air with the heat formula

Q = mc delta T

m = Q / c delta T = (7.08068 * 10 ^ 6 J) / (1.009J / kg ° C * (100-25) ° C) =

m = 93566.96kg

We now calculate the volume of a balloon.

V = 4/3 * pi * r ^ 3 = 4/3 * 3.14 * 1.4m ^ 3 = 11.49m ^ 3

Now we calculate the mass of the balloon

mg = 0.946kg / m3 * 11.49m ^ 3 = 10.87kg

The amount of balloons is

93566.96kg / 10.87kg = 8608.18 balloons

5 0

3 years ago

Read 2 more answers

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Dmitriy789 [7]

Answer:

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so the answer could be it takes less Btu to manufacture recycled products than new ones

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Alekssandra [29.7K]

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3 years ago