Assume the copper was not thoroughly dried. How will the following calculations be affected?

1 answer:

6 0

The answer should be A, I could be wrong though. Water seeps into any open crack or pore, making something denser, therefore could cause more (or less) mass.

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When the electron of a hydrogen atom moves into a higher energy orbit, what is the state of the atom?

faltersainse [42]

Answer is: excited state.
In excited state, hydrogen has higher energy than in the ground state (state with lowest energy). Hydrogen atom has one electron in the lowest possible orbit (1s), when atom absorbs energy, the electron move into an excited state (quantum numbers greater than the minimum possible). Electron lifetime in excited state is short.

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3 years ago

The rays produced in a cathode tube are

wel

Answer:

Electrons

Explanation:

Cathode rays carry electronic currents through the tube. Electrons were first discovered as the constituents of cathode rays. J.J. Thomson used the cathode ray tube to determine that atoms had small negatively charged particles inside of them, which he called “electrons.”

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3 years ago

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The line graph shows the heights of plants grown in fertilized and unfertilized soil. Based on this information, what will most

AfilCa [17]

Answer:

g) Neither plant should increase by 1 cm in height.

Explanation:

See the graph for this question on the figure attached.

The growing of the plant A is represented by the line that goes above the other. At start, that line has a slope that rises about 0.75 cm ( height increase) in 1 day. From the day 2 and forward the slope of the line decreases. The line reaches its highest point about at day 4 and seems to start decreasing. Thus, you should predict that on the day six it most likely does not increase in height.

The growing of the plant B is represented by the line drawn below the other. As for the plant B, the growing decreases with the number of days. Between the days 4 and 5 the line is almost flat, which means that most likely this plant will not grow on the day six or grow less than 0.5 cm.

Thus, for both plants you can say that on day six, most likley, neither should increase by 1 cm in height (option g).

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3 years ago

The city is using sand trucks to place on the road during ice conditions which best explians the use of the sand

Stolb23 [73]

The sand provides a rough surface on top of the ice for the cars' tires to grip onto. It provides more friction. Salt melts the ice and often provides more friction (the disadvantage is that it eats concrete!).

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4 years ago

What is the name of the compound whose formula is n2o5

Ierofanga [76]

The name of the compoud is Dinitrogen pentoxide.

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3 years ago