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4 years ago

Which choice describes the forms that energy takes when it starts in the Sun and ends in the sugars of plants?

Chemistry

2 answers:

Lapatulllka [165]4 years ago

8 0

It goes from radiant to chemical.

klasskru [66]4 years ago

6 0

nuclear energy light energy chemical potential energy

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According to the graph, if you are in a biome where the annual precipitation is about 300 cm and the average temperature is arou

alina1380 [7]

Answer:

We are in Tropical Rainforests.

Explanation:

Biome is basically an ecological region of earth that has specific type of flora and fauna (plants and animals). Every biome has specific abiotic factors like specific climate, temperature, geology, vegetation, soils and relief.

There are total 8 biomes in the world

Desert
Grassland
Temperate Boreal Forest
Chaparral
Tropical Savanna
Tropical Rainforest
Tundra
Temperate Deciduous Forest

Now in our question, we have been given some conditions and are asked to identify the biome. The annual precipitation is about 300 cm and the average temperature is around 25 degrees Celsius.

Now, if we study the characteristics of all these biomes, it is very simple to identify that the biome is Tropical Rainforest.

Important characteristics of Tropical Rainforest:

They receive more than 200 cm of rain each year.
The temperature of the biome is between 20 degree Celsius and 25 degree Celsius during the whole year.
Around 50 percent of the animal specie of the world are found here.

Note: You can study the characteristics of world’s other biomes in the link : http://www.physicalgeography.net/fundamentals/9k.html

Hope it helps! :)

8 0

3 years ago

Which of the following gases will have the highest rate of effusion at a given temperature?

Nataliya [291]

Answer:

He.

Explanation:

Graham's law states that the effusion rate is inversely proportional to the molecular weight. It means that the gas with the lowest molecular weight will have the highest effusion rate.

The molecular weights of the given gases are:

Cl₂ = 70.9 g/mol.

He = 2.0 g/mol.

O₂ = 32.0 g/mol.

Ne = 20.17 g/mol.

Since He has the smallest molecular mass, so it will have the highest rate of effusion.

5 0

3 years ago

Read 2 more answers

If the half-life of 37Rb is 4.7x101 years, how long would it take for 0.5 grams of a 2 gram sample to radioactively decay?

k0ka [10]

Answer: The time required will be 19.18 years

Explanation:

All the radioactive reactions follows first order kinetics.

The equation used to calculate half life for first order kinetics:

$k=\frac{0.693}{t_{1/2}}$

We are given:

$t_{1/2}=4.7\times 10^1yrs$

Putting values in above equation, we get:

$k=\frac{0.693}{4.7\times 10^1yr}=0.015yr^{-1}$

Rate law expression for first order kinetics is given by the equation:

$k=\frac{2.303}{t}\log\frac{[A_o]}{[A]}$

where,

k = rate constant = $0.015yr^{-1}$

t = time taken for decay process = ?

$[A_o]$ = initial amount of the reactant = 2 g

[A] = amount left after decay process = (2 - 0.5) = 1.5 g

Putting values in above equation, we get:

$0.015yr^{-1}=\frac{2.303}{t}\log\frac{2}{1.5}\\\\t=19.18yrs$

Hence, the time required will be 19.18 years

4 0

3 years ago

Based on what you have read, write two to three sentences explaining what James Cross Giblin probably wants readers to think abo

ycow [4]

Answer:

Explanation:

The message of the book is that perseverance is necessary for success. If we focus on our goals and learn from others, we will be rewarded in the end.

It's a reap what you sow kind of meaning as well in which perseverance is key for accomplishing our goals.

6 0

3 years ago

Read 2 more answers

Boiling point elevation means that:

jeka94

Answer:

B. it will take more energy for the particles of the solution to overcome the atmospheric pressure.

Explanation:

i checked the slideshow from educere lol (slide 8 colligative properties lesson)

8 0

3 years ago