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Mandarinka [93]
4 years ago
13

I need this all by today because I’m get 0 and my science teacher is being a

Chemistry
2 answers:
Shalnov [3]4 years ago
7 0
The cnidarias life cycle has 2 life cycles polyp and medusa
dmitriy555 [2]4 years ago
7 0

The correct answer is B their life cycle consists of two distinct phases - the polyp and medusa stage.

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What is the answer for chemestry when it says 1.204 times 10^24
Sphinxa [80]

Answer: This is called moles

Explanation:  This is described to be the number of molecules, atoms or ions in a substance :)

6 0
3 years ago
An oxygen atom has a mass of 2.66 x 10^-23 g and a glass of water has a mass of 0.050kg. Use this information to answer the ques
fomenos
<h2>ANSWER OF EACH PART ARE GIVEN BELOW</h2>

Explanation:

A)

We know, each mole contains N_A= 6.023 \times 10^{23} atoms.

It is given that mass of one oxygen atom is m= 2.66\times 10^{-23}\ g.

Therefore, mass of one mole of oxygen, M=m\times N_A.

Putting value of n and N_A,

M=2.66\times 10^{-23}\times 6.023\times 10^{23} \ gm\\M=16.0\ gm

B)

Given,

Mass of water in glass=0.050 kg = 50 gm.

From above part mass of one mole of oxygen atoms = 16.0 gm.

Therefore, number of mole of oxygen equivalent to 50 gm oxygen=\dfrac{50}{16}=3.1 \ moles.

LEARN MORE :

Avogadro's number

brainly.com/question/12902286

3 0
3 years ago
What is a good essential question for the subject molecular compounds
Mashutka [201]
Why do molecules combined into chains?
6 0
3 years ago
Lead has a density of 11.3 g/mL. If you have 105 grams of lead,
Elza [17]

Answer:

<h2>Volume = 9.29 mL</h2>

Explanation:

Density of a substance can be found by using the formula

Density( \rho) =  \frac{mass}{volume}

From the question

Density = 11.3 g/mL

mass = 105 g

Substitute the values into the above formula and solve for the volume

That's

11.3 =  \frac{105}{v}

Cross multiply

11.3v = 105

Divide both sides by 11.3

v =  \frac{105}{11.3}

v = 9.29203

We have the final answer as

<h3>Volume = 9.29 mL</h3>

Hope this helps you

6 0
3 years ago
Which of the following would not be an isotope of carbon-12? A. Carbon-14 B. Carbon-13 C. Boron-12 D. Carbon-11
Oliga [24]
C because it isn't carbon
6 0
3 years ago
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