juan is planning an investigation about natural reserves. which of these is most likely to be a reliable source of scientific information on the internet

Answers

Answer 1

Answer: It depends on the credibility and reliability of the said source. Thus, a primary source is a type of obtaining or sourcing information after the phenomenon occurred at that particular time and when photographs are the first-hand materials that were able to capture that specific moment which then can convey the information. Primary resources also include –newspapers, journal articles, magazines and etc. These information are very vital for its credibility and reliability.

Answer 2

Answer:

Answer:it’s .gov

Explanation:thanks me later took the test

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Which is true about the dissolving process in water? Nonpolar solutes dissolve easily in water. Solute molecules surround water molecules. Molecules or ions of a solute spread throughout the water molecules. Water molecules are repelled by solute ions at the surface of the solute.

Answers

The simple principle for solute dissolution in a particular solvent is "like dissolves like". In the case of water, a solute will dissolve if it is polar. This is because water is a polar solvent. A polar substance is one which has particles that have a net charge on them. This net charge produces forces of attraction. When a polar solute is added to water, the water molecules are attracted to the solute particles and they attach to them. After attaching to the water molecules, the solute particles are dispersed throughout the water. Therefore, the answer is molecules or ions of a solute spread throughout the water molecules.

Answer:

C. Molecules or ions of a solute spread throughout the water molecules.

Explanation:

C. Molecules or ions of a solute spread throughout the water molecules.

How do you find the volume occupied by 454 grams of copper if the density equals 8.92 g/mL?

Answers

V=M/P
M=454g
p=8.92
v=50.896860986
3 significant figures
v= 50.9

Final answer:

The volume occupied by 454 grams of copper, given a density of 8.92g/mL, can be calculated using the formula for density (Density = Mass / Volume). When rearranged to find volume (Volume = Mass / Density) and substituting the given values, the volume occupied is approximately 50.9 mL.

Explanation:

When calculating volume in chemistry, we use the formula for density, which is: Density = Mass / Volume. In this case, the given values are mass (454g) and density (8.92g/mL). If we rearrange the formula to solve the volume, we get: Volume = Mass / Density. So, if we substitute the given values into the equation, we obtain: Volume = 454g / 8.92g/mL. In performing the operation, we get approximately 50.9 mL. Hence 454 grams of copper occupy 50.9 mL of volume.

Learn more about Calculating Volume here:

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Which class of elements best conducts electricity

Answers

Metals best conducts electicity

metals conduct all electricity.

With the help of a reaction show that zinc is more reactive than iron.

Answers

$3Zn+2Fe^(3+)\rightarrow 3Zn^(2+)+2Fe$

What is the pressure in atm exerted by 2.48 moles of a gas in a 250.0 ml container at 58c?

Answers

Explanation:

The given data is as follows.

V = 250.0 ml, T = 58^{o}C = 58 + 273 = 331 K

n = 2.48 moles, P = ? , R = 0.082 atm L /K mol

Therefore, calculate the pressure using ideal gas equation as follows.

PV = nRT

P = $(nRT)/(V)$

= $(2.48 mol * 0.082 atm L/K mol * 331 K)/(250.0 ml)$

= 0.269 atm

Thus, we can conclude that pressure of the given gas is 0.269 atm.

T = 58 + 273.15 = 331.15

R = 0.082 atm

V = 250.0 mL / 1000 = 0.25 L

P = n x R x T / V

P = 2.48 x 0.082 x 331.15 / 0.25

P = 67.342 / 0.25

P = 269.368 atm

hope this helps!

Answer THIS QUESTION

Answers

Answer:it is 580

Explanation:

I had the answer on my quiz

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