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AnnyKZ [126]
3 years ago
7

A student dissolves some solid NaNO3 in a beaker of water. Which are the solute and the solvent? Choose all answers that are cor

rect. A. solute: water B. solvent: water C. solvent: NaNO3 D. solute: NaNO3
Chemistry
1 answer:
Paul [167]3 years ago
3 0
The correct answer is D. The solute in this solution is the solid sodium nitrate (NaNO3) which is dissolved in the solvent, the water. Solute is the minor component in a solution whereas the solvent is the major component in the solution.
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How might an increasing population of robins positively and negatively affect a community?
Oliga [24]

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In another example, let's assume all the dead hollow trees are removed from a forest ecosystem. Cavity nesting animals such as bluebirds, nuthatch, wrens, screech owls, squirrels and woodpeckers have very little, if any, shelter available. The number of animals of this type would be reduced. Insect populations could increase because of fewer insect eating birds and trees and other plants could be negatively affected. The whole ecosystem is affected.

The amount of suitable habitat for a species of wildlife will determine the number of animals that can survive in the area. Human activity has the greatest impact on the amount and quality of wildlife habitat in Illinois. Wildlife habitat can be destroyed or its quality diminished as a result of urban sprawl, agricultural practices, pollution, sedimentation, or habitat fragmentation.

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5 0
3 years ago
PLEASE HELP I WILL MARK BRAINLIEST!!!<br><br> Reactions In Our World Lab Report
Cerrena [4.2K]

Answer:

ok

Explanation:

ok

6 0
2 years ago
What is the wavelength (in nm) of the least energetic spectral line in the visible series of the H atom?
grin007 [14]

Answer:

Brackett Series (n = 4)

Explanation:

The least energetic line of Hydrogen atom lies in <em>Brackett Series </em>when n = 4 because these are least energetic, have longer wavelengths and lies in Infrared region of spectrum.  No traces of <em>Pfund series </em>are formed by H=atoms.

8 0
2 years ago
Find the total number of moles of ions produced when 0.347 mol of sodium carbonate dissolves.
Ahat [919]

Answer:

molarity= 0.238 mol L-

Explanation:

The idea here is that you need to use the fact that all the moles of sodium phosphate that you dissolve to make this solution will dissociate to produce sodium cations to calculate the concentration of the sodium cations.

Na 3 PO 4 (aq) → Na + (aq) + PO3−4 (aq)

Use the molar mass of sodium phosphate to calculate the number of moles of salt used to make this solution.

3.25g⋅1 mole N 3PO4 163.9g = 0.01983 moles Na3 PO 4

Now, notice that every

1 mole of sodium phosphate that you dissolve in water dissociates to produce

3bmoles of sodium cations in aqueous solution.

4 0
2 years ago
What must take place for copper metal to be oxidized?
Oxana [17]
 <span>The copper would go under oxidation since it will be losing two electrons. Copper starts out with an oxidation number of zero, but in order to balance the compound of CuO with the Oxygen having an oxidation number of -2, a positive 2 is required</span>
6 0
2 years ago
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