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4 years ago

How did the atmosphere get its oxygen

2 answers:

riadik2000 [5.3K]4 years ago

7 0

Because super tiny organisms called cyanobactierea (alge) they conducted photosynthesis and they us sunshine water and Carbon D to make Oxygen

AleksandrR [38]4 years ago

3 0

Tiny organisms know as cyanbacteria, or blue-green algae. These microbes conduct photosynthesis : using sunshine, water and carbon dioxide to produce carbohydrates and, yes, oxygen.

There's your answer. Hope This Helps :)

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if a jar of honey sits for a long time, sugar may crystallize in the jar.describe two possible cause for this crystallization?

disa [49]

The two possible causes for crystallization in honey is 1. The condition of the room. (if the temperature keeps rising and dropping rapidly) 2. <span>Crystallization rate also depends on the type of honey you keep in your cabinet. There are 300 different kinds of honey and each type crystalizes differently</span>

8 0

3 years ago

Read 2 more answers

How much heat is required to take a 150 g sample of water from 10.0 ℃ to 95.0 ℃? cs,water = 4.184 J/g*℃

Setler79 [48]

Answer:

$\boxed {\boxed {\sf 53, 346 \ Joules}}$

Explanation:

We are given the specific heat and change in temperature, so we should use this heat formula:

$q=m C \Delta T$

where m is the mass, C is the specific heat capacity, and ΔT is the change in temperature.

We know the mass is 150 grams. The specific heat of water is 4.184 J/g °C.

Let's find the change in temperature.

Subtract the initial temperature from the final temperature.

ΔT= final temp - initial temp
final= 95.0 °C and initial= 10.0 °C
ΔT= 95.0 °C - 10.0 °C= 85.0 °C

Now we know all the values:

$m= 150 \ g \\C= 4.184 J/ g \ \textdegree C \\\Delta T= 85.0 \textdegree C$

Substitute them into the formula.

$q=(150 \ g) (4.184 \ J/g \ \textdegree C)(85.0 \textdegree C )$

Multiply all three numbers together. Note that the grams (g) and degrees Celsius (°C) will cancel out. Joules (J) will be the only remaining unit.

$q=(627.6 \ J/ \textdegree C) ( 85.0 \textdegree C)$

$q=53346 \ J$

<u>53,346 Joules</u> of heat are required.

4 0

3 years ago

what biome has many nocturnal animals that burrow underground during the day that are active at night

hram777 [196]

Answer:

it could be maybe a raccoon or a possum

Explanation:

4 0

3 years ago

4.2 grams of magnesium metal reacts with excess gold III chloride to form 5.9 grams of gold and also magnesium chloride. What is

Margaret [11]

Answer:

???

Explanation:

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3 years ago

How does sunlight hits earths surface closer to the poles?

borishaifa [10]

Answer:

When the sun's rays strike Earth's surface near the equator, the incoming solar radiation is more direct (nearly perpendicular or closer to a 90˚ angle). Therefore, the solar radiation is concentrated over a smaller surface area, causing warmer temperatures.

Explanation:

3 0

3 years ago