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alexira [117]
3 years ago
6

Please answer's these scientist answer's

Chemistry
2 answers:
Vedmedyk [2.9K]3 years ago
7 0
Pretty sure it would be development patterns for the first one and selection for the second one
Dahasolnce [82]3 years ago
6 0
1. Development Patterns
2. Genetic Variation
Hope this helps.
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A person buildirig an aquarium would benefit from adding a livce rock to their aquarium because ?
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It introduces a diverse array of bacteria, algae, and invertebrates to the closed marine environment and functions as a superior biological filter
7 0
2 years ago
If the mass of a liquid reactant is 10g and the mass of a powder reactant is 5g then what should the mass of the product be acco
guapka [62]

Answer:15g

Explanation:

According to the law of conservation of mass, the mass of the products in a chemical reaction must equal the mass of the reactants.

10g + 5g ➡️ 15g

6 0
3 years ago
I need an analysis and conclusion, for the lab, Types of reactions
Leya [2.2K]

Answer:

Explanation:

I am a bit confused is there instuctions on what to write on or anything like that

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3 years ago
If a 2.50 liter container is filled with Ne gas at a pressure of 650 mm Hg and at 25°C, what mass of Ne is in the container?
seraphim [82]

Answer:

1.76 g is the mass of Ne is in the container.

Explanation:

We use the equation given by ideal gas which follows:

PV=nRT

where,

P = pressure of the gas = 650 mm Hg

V = Volume of the gas = 2.50 L

T = Temperature of the gas = 25^oC=[25+273]K=298K

R = Gas constant = 62.3637\text{ L.mmHg }mol^{-1}K^{-1}

n = number of moles of Ne gas = ?

Putting values in above equation, we get:

650mmHg\times 2.50L=n\times 62.3637\text{ L.mmHg }mol^{-1}K^{-1}\times 298K\\\\n=\frac{650\times 2.50}{62.3637\times 298}=0.0874mol

Also, molar mass of Ne = 20.1797 g/mol

So, Mass = Moles\times Molar\ mass = 0.0874\times 20.1797 g = 1.76\ g

<u>1.76 g is the mass of Ne is in the container.</u>

7 0
3 years ago
Which type of mixture can be separated using distillation? A compound with elements of different boiling points Homogeneous mixt
nalin [4]
<h3>Answer:</h3>

Homogeneous mixture with components of different boiling points

<h3>Explanation:</h3>
  • Distillation is a method of separating miscible mixtures which contain components that have different boiling points.
  • The mixture is heated and the component with the low boiling point evaporates first. It is then condensed in the condenser and the distillate collected using a clean beaker.
  • For example, a miscible solution of ethanol and water can be separated using distillation.
  • Ethanol and water have different boiling points of 78°C and 100°C respectively. Ethanol is distilled out first because it has a low boiling point compared to water.

7 0
3 years ago
Read 2 more answers
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