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2 years ago

What are the effects of climate change? Answer this question integrating other topics of science.

Chemistry

1 answer:

riadik2000 [5.3K]2 years ago

3 0

Answer:

»Climatic change leads to malnutrition.

e.g when its cold season, osmoregulation decreases and rate of metabolism declines.

This is because the enzymes lack that optimum temperature for their catalytic activity to take place hence improper digestion.

»Leads to promotion of predation in ecosystem.

such as reptiles e.g snakes, lizards get away from shelters on cold days since they are cold blooded, hence their predators such as animals, birds increase.

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3. A thin lead apron is used to protect patients from harmful X rays. If the sheet measures 75.0 cm by 55.0 cm by 0.10 cm, and t

DanielleElmas [232]

Answer:

4.67 kg

Explanation:

Given data

Dimensions of the lead sheet: 75.0 cm by 55.0 cm by 0.10 cm

Density of lead: 11.3 g/cm³

Step 1: Calculate the volume of the sheet

The volume of the sheet is equal to the product of its dimensions.

$V = 75.0 cm \times 55.0 cm \times 0.10 cm = 413 cm^{3}$

Step 2: Calculate the mass of the sheet

The density (ρ) is equal to the mass divided by the volume.

$\rho = \frac{m}{V} \\m = \rho \times V = \frac{11.3g}{cm^{3} } \times 413cm^{3} = 4.67 \times 10^{3} g = 4.67 kg$

6 0

2 years ago

a molecule of ozone gas has has three atoms of oxygen . witch of these describes ozone most specifically?

AURORKA [14]

The best answer choice you could go for is B pure substance, a pure substance is a compound that is made of one element, like a diamond.

8 0

3 years ago

Read 2 more answers

what pressure in N/m2 would be exerted if a 65 kg person were sitting on a stool with a seat diameter of 12 inches?

yaroslaw [1]

d = diameter of the seat = 12 inch

we know that , 1 inch = 0.0254 m

hence

d = diameter of the seat = 12 inch = 12 (0.0254) m = 0.305 m

r = radius of seat = diameter/2 = d/2 = 0.305/2 = 0.1525 m

A = area of seat = πr²

m = mass of the person = 65 kg

g = acceleration due to gravity = 9.8 m/s²

F = force due to weight of person on the seat = mg

pressure on the seat is given as

P = F/A

P = mg/A

P = mg/(πr² )

inserting the values

P = (65 x 9.8)/((3.14) (0.1525)²)

P = 8723.1 N/m²

7 0

3 years ago

Use the dilution formula, m1v1 = m2v2, to calculate the concentration of cu+2 ions in cuvettes 1 and 2. record these concentrati

lianna [129]

<span>Answer: The dilution formula is V1M1 = V2M2. We need 3 of the values to calculate the 4th. We have the original volume (2 mL of copper ion solution) and the final volume (20 mL), but we don't have the concentration of either the original or the final copper solution, All we can say is the resulting solution is 10 times as dilute as the original was- V1M1 = V2M2 2Ă—0.200 = 20Ă—M2, so M2 = 0.400/20 = 0.020M</span>

5 0

3 years ago

20cm³ of sulphuric acid reacts completely with excess zinc to form 0.1 mole of hydrogen gas. Calculate the molarity of the acid

VMariaS [17]

Answer:

20cm³ of sulphuric acid reacts completely with excess zinc to form 0.1 mole of hydrogen gas. Calculate the molarity of the acid used.?

Molarity= mol/volume

Molarity= 0.1/20

Molarity= 0.005mol/L

Explanation:

7 0

3 years ago