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lesya692 [45]
3 years ago
9

Help me with 23 fast

Chemistry
2 answers:
antoniya [11.8K]3 years ago
8 0

Answer:

A salt

Because compounds are made of molecules but we need to mention the type of compound formed.

alina1380 [7]3 years ago
5 0

Answer:

a salt

Explanation:

compounds are made of molecules but we need to mention the type of compound formed.

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A substance that does not allow x-rays to pass through is described as being
horsena [70]

A substance that is impenetrable by x-rays is described as being radiopaque.

Radiopaque substances will not allow x-rays and or other forms of radiations to pass through them.

Instead, they absorb or block the rays and when used in radiology, they appear white or light gray on photographic films.

Radiopaque materials are applied in generating ultrasound images and other forms of clinical procedures.

More on radiopaque materials can be found here: brainly.com/question/10583205?referrer=searchResults

8 0
2 years ago
he number-average molecular weight of a polypropylene is 1,000,000 g/mol. Compute the degree of polymerization.
m_a_m_a [10]

Answer:

The answer is "23765.4"

Explanation:

Motor weight average number (\bar{M_n}) = 1000000 \frac{g}{mol}

Poly condensation degree dependent on the average number of molecular weights is as follows:

DP_n = \frac{\text{Mol.Wt Number Medium}}{\text{Monomer Unit Mol.Wt}}

All monomer module, in this case, is propylene  

Sunrise. Unit Wt = Mol. Propylene weight

                           = \ Mol. \ Wt \ of \ C_3H_6\\\\= 3 \times 12.01 +6 \times 1.008 \ \ \frac{g}{mol}\\\\= 42.078 \frac{g}{mol}\\\\

DP_n = \frac{1000000}{42.078}\\\\

    =23765.4

8 0
3 years ago
Which hold more heat for longer period of time ? <br><br> A. Air <br> B. Water
Mandarinka [93]

Answer:

water

Explanation:

The heat capacity of a material, along with its total mass and its temperature, tell us how much thermal energy is stored in a material. ... <u>The result is that the temperature of the water cube is much more stable than the air — the water changes much more slowly; it holds onto its temperature longer.</u>

8 0
2 years ago
Read 2 more answers
Please help me (40 points)
Maksim231197 [3]

Answer:

P=15

N=16

Explanation:

4 0
2 years ago
Which of the following is a compound? a.carbon b.oxygen c.hydrogen d.water
Papessa [141]
It’s a.carbon according to Siri
8 0
3 years ago
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