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Jlenok [28]
3 years ago
11

MASTERING CONCEPTS 31. List three examples of substances. Explain why each is a substance.

Chemistry
1 answer:
SOVA2 [1]3 years ago
6 0

Answer:

vc

Explanation:

cvcv

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A chemistry student needs 50.0 g of dimethyl sulfoxide for an experiment. By consulting the CRC handbook of chemistry and physic
Ugo [173]

Answer:

45.45 ml of dimethyl sulfoxide

Explanation:

density of dimethyl sulfoxide is 1.10 g/10⁻³L which is 1.10 g/mL

now we devise the next reasoning:

If           1.10 g of dimethyl sulfoxide have a volume of 1 mL

Then     50 g of dimethyl sulfoxide have a volume of X mL

X = (50 × 1) / 1.10 = 45.45 ml of dimethyl sulfoxide

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3 years ago
1. What volume is required to contain 100.0 mol O2 at STP?​
Colt1911 [192]

Answer:

The volume is 2238,6 L

Explanation:

We use the formula PV=nRT. The conditions STP are: 1 atm of pressure and 273K of temperature:

PV=nRT ---> V=(nRT)/P

V= 100 mol x 0,082 l atm/K mol x 273K/ 1 atm

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Which scenario supports the ""one gene–one enzyme"" hypothesis of metabolic disease causation?
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Phenylketonuria (PKU) is a metabolic inherited disorder associated with a decreased metabolism of the amino acid phenylalanine.

PKU is caused by a mutation in the gene responsible for encoding a key enzyme needed to break down phenylalanine.

Untreated PKU may lead to diverse health problems which include brain damage, intellectual disability, seizures, mental disorders, etc.

Learn more in:

brainly.com/question/7157066?referrer=searchResults

4 0
3 years ago
Describe the trend for atomic radius from left to right across a period. Use atomic
Allisa [31]

As you move across a period, the atomic radii decreases. ... As you move across a period, electrons are added to the same energy level while protons are also being added. The concentration of more protons creates a higher effective nuclear charge.

6 0
2 years ago
Is/are determined by a genetic trait passed on from parents to their children
Darya [45]

Answer:genes

Explanation:

7 0
3 years ago
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