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3 years ago

What are the causes and consequences of climate change

1 answer:

7 0

Answer: Humans are increasingly influencing the climate and the earth's temperature by burning fossil fuels, cutting down forests and farming livestock.

Explanation: This adds enormous amounts of greenhouse gases to those naturally occurring in the atmosphere, increasing the greenhouse effect and global warming.

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Note the mass of copper(1) oxide formula unit 143.091 what is the mass of 8.250 moles of Cu2O

baherus [9]

Answer:

The mass of 8.250 moles of Cu2O is 1180.5g

Explanation:

HOW TO CALCULATE MASS OF A SUBSTANCE:

The mass of a substance can be calculated by multiplying the number of moles in the substance by its molar mass as follows:

Mass (g) = no. of moles (mol) × molar mass (g/mol)

Molar mass of copper (I) oxide (Cu2O) = 63.5(2) + 16 = 143.09 g/mol

Mass of Cu2O = 8.250 mol × 143.09 g/mol

Mass of Cu2O = 1180.5 g

Therefore, the mass of 8.250 moles of Cu2O is 1180.5 g.

6 0

3 years ago

In a mixture of 3 gases what is the total pressure of the gases if Gas A exerts a pressure

kirill [66]

Answer:

760 mm of Hg

Explanation:

If the gases A , B and C are non reacting , then according to Dalton's Law of Partial Pressure the total pressure exerted is equal to sum of individual partial pressure of the gases .

If there are n , number of gases then ,

$P_{total}= P_1+P_2+P_3+\dots +P_n$

Here ,

Partial pressure of Gas A = 400mm of Hg
Partial pressure of Gas B = 220 mm of Hg
Partial pressure of Gas C = 140mm of Hg

Hence the total pressure exerted is ,

$P_{total}= P_{Gas\ A }+P_{Gas\ B }+P_{Gas\ C }$

Substitute ,

$P_{total}=( 400 + 220 + 140 )mm\ of \ Hg$

Add ,

$P_{total}= 760\ mm\ of \ Hg$

Hence the total pressure exerted by the gases is 760 mm of Hg.

I hope this helps.

4 0

3 years ago

List some situations where you would most likely rely on your peripheral vision? ( Lesson- the eye)

choli [55]

Peripheral vision is a part of sight that happens outside the very middle of gaze. There is a general set of non-middle points in the sight field that is part in the idea of peripheral vision. Mostly, peripheral vision is used when playing sports namely basketball and volleyball because peripheral vision is also known as side view, we can see the object or person in the side without actually looking at them.

8 0

4 years ago

Read 2 more answers

What are the 4 major macromolecules

ANEK [815]

Carbohydrates
Lipids
Protein
Nucleic acids

8 0

3 years ago

True or false: Fungi are able to carry out photosynthesis, similar to plants

QveST [7]

Answer:

false