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2 years ago

Help….? Anyone? It’s a test. 99 points

Chemistry

2 answers:

Crazy boy [7]2 years ago

7 0

Answer:

Cyanobacterium

Explanation:

“Cyanobacterium” is the correct answer, as it has the kingdom bacteria in its name.

Naily [24]2 years ago

6 0

which organism is a member of Kingdom Eubacteria?

CYANOBACTERIUM

➜ are classified in the kingdom Monera. considered to be more closely related to bacteria and are no longer considered members of the plant family.

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A balloon filled with helium gas occupies 2.50 L at 25°C and 1.00 atm. When released, it rises to an altitude where the temperat

stira [4]

Answer:

8,19 L

Explanation:

The combined gas law is a equation that can be used when the initial and final conditions -pressure,volume,amount of moles,temperature-, of a gas change during a process. It can be written:

$\frac{P1V1}{n1T1}=\frac{P2V2}{n2T2}$

If the amount of the gas remains constant, then n1=n2 and we have:

$\frac{P1V1}{T1}=\frac{P2V2}{T2}$

For the problem we have:

Note: When working with gases is important to use absolute temperature values (°K, °K=°C+273,15):

P1=1 atm, V1=2,5L, T1=25+273,15=298,15°K

P2=0,3 atm, V2=?, T2=20+273,15=293,15°K

$V2=\frac{P1V1T2}{T1P2}=\frac{1atm*2,5L*293,15K}{298,15K*0,3atm}=8,19L$

The new volume of the balloon is 8,19 L.

5 0

3 years ago

The sidewalk outside is covered in ice what kind of shoes should i wear to walk on the ice explane

babunello [35]

Answer:

Well you should wear boots.

Explanation:

Boots because most winterized boots have tread on the bottom, allowing you to grip the ice better. They will help prevent you from slipping , and are even good for walking up slippery hills.

4 0

3 years ago

Right answers only will be reported if not right and no lniks!!!!!!!!!!!!!!!!!

Tasya [4]

Answer:

tgratreqw

Explanation:

3 0

3 years ago

Which of the following describes a response to external stimuli?

Pavlova-9 [17]

The correct answer is A.

Hunger, chemical imbalance, and blood levels are all internal issues. Cat dander on the other hand is not something the body creates or and is something in the environment.
Thus, your answer is A.

3 0

3 years ago

Read 2 more answers

1. Alexa and her family travelled 5 hours south east on 1-45 to crystal

Gre4nikov [31]

Answer:

Average speed = 68 mph

Explanation:

Given that,

Total distance traveled by the family, d = 340 miles

The family traveled 5 hours southeast.

We need to find her average speed. The speed of an object is given by the total distance covered divided by time taken. So,