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lidiya [134]
3 years ago
12

Diego has learned that the Earth wobbles on its axis in a certain pattern. He predicts that this pattern will repeat every 20,00

0 years. Which of the following ways would be the best way to test Diego's prediction? A. make observations in nature B. make a model C. observe the movement of other planets D. conduct a controlled experiment
Chemistry
2 answers:
nataly862011 [7]3 years ago
8 0
Observe the movment of other planets would be your answer
RSB [31]3 years ago
7 0

Answer:

The answer is B not C

Explanation:

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the balloon is inflated outdoors on a cold day in North Dakota at a temperature of -35°C to a volume of 3.0 L. The pressure rema
iragen [17]

3.75 litres is the volume of the balloon indoors at a temperature of 25°C.

Explanation:

Data given:

initial temperature of the gas in balloon  = -35°C or 238.15 K

initial volume = 3 litres

final temperature = 25 °C  or 298.15 K

final volume =?

pressure remains constant

From the data given when pressure is constant Charles' law is applied.

\frac{V1}{T1} = \frac{V2}{T2}

Rearranging the equation to know the final volume of the gas in balloon

V2 = \frac{V1T2}{T1}

V2 = \frac{3 X 298.15}{238.15}

V2 = 3.75 Litres

when the temperature of a gas is increased and pressure remains constant the volume of the gas increases.

7 0
3 years ago
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50 g of NaCl is mixed with water to make .5 L of salt water. Which is the solute?
NNADVOKAT [17]

Answer:

The correct answer to the following question will be "NaCl".

Explanation:

  • A solute is being known as the soluble material within a liquid or a solution. The solvent is available in larger quantities than those of the solute among fluid. 
  • Concentration seems to be a calculation including its quantity of solvent contained in such a liquid solution, regard to something like the solvent volume.

So that NaCl is the right answer.

3 0
3 years ago
Write the structural formula for a primary, a secondary, and a tertiary constitutionally isomeric alcohol of the molecular formu
9966 [12]

Answer:

The structures of all isomeric alcohols of molecular formula C5H12O along with their IUPAC names are as shown.

Their classification of primary, secondary, and tertiary alcohols are -

1-pentanol -

2-pentanol -

3-pentanol

2-methylbutan-1-ol

2-methylbutan-2-ol

3-methylbutan-2-ol

3-methylbutan-1-ol

2,2-dimethylpropanol

5 0
3 years ago
What is the name of the particle made up of 2 protons and 2 neutrons?
barxatty [35]

Answer: It’s called a alpha particle

Explanation:

8 0
3 years ago
Who can help me on this one ?
Bogdan [553]

Answer:

eight strong bonds to the atoms that it touches and six weaker bonds to the atoms it almost touches. This makes it easier to understand why a metal might prefer the body-centered cubic structure to the hexagonal or cubic closest-packed structure.

6 0
3 years ago
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