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DochEvi [55]
3 years ago
8

The standard length of a certain golf club is 116.84 cm. You measure the club to be 116.85 cm long. You measure it again and fin

d it to be 116.84859 cm long. The first measurement is ______________, and the second measurement is ______________.
Chemistry
1 answer:
IgorC [24]3 years ago
8 0

Answer:

The first measurement is 116.84 cm, and the second measurement is 116.85 cm.

Explanation:

The problem provides both the first and second measurements so all you have to do is fill in the blank with them.

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Answer:

I think B

Explanation:

There are more negative ions than positive ions

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Addition of which disaccharide to a solution of Ag2O in NH3(aq) will NOT result in the deposition of shiny silver mirror on the
mihalych1998 [28]

Answer:

Saccharose

Explanation:

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6 0
3 years ago
Describe what you would expect to observe, if anything, when a piece of nickel is placed in a solution of copper(II) nitrate. (s
Tom [10]

When a piece of nickel is placed in a solution of copper(II) nitrate:

a. Solid copper would form on the surface of the nickel metal.

c. Nickel atoms are converted to nickel ions in solution.

d. The blue color of the solution would become lighter.

Let's consider what happens when a piece of nickel is placed in a solution of copper(II) nitrate. Cu has a higher reduction potential than Ni, thus Cu will reduce and Ni will oxidize. This will be a single displacement redox reaction. The corresponding balanced molecular equation is:

Ni(s) + Cu(NO₃)₂(aq) ⇒ Ni(NO₃)₂(aq) + Cu(s)

The net ionic equation is:

Ni(s) + Cu²⁺(aq) ⇒ Ni²⁺(aq) + Cu(s)

<em>Describe what you would expect to observe, if anything, when a piece of nickel is placed in a solution of copper(II) nitrate.</em>

<em>a. Solid copper would form on the surface of the nickel metal.</em> YES. Solid copper will deposit on the surface of nickel metal.

<em>b. The blue color of the solution would become darker.</em> NO. The blue color, caused by Cu²⁺ ions, will become lighter, as their concentration decreases.

<em>c. Nickel atoms are converted to nickel ions in solution.</em> YES. Ni is oxidized to Ni²⁺.

<em>d. The blue color of the solution would become lighter.</em> YES. Due to the decrease in the concentration of Cu²⁺ ions.

<em>e. No reaction would occur.</em> NO.

When a piece of nickel is placed in a solution of copper(II) nitrate:

a. Solid copper would form on the surface of the nickel metal.

c. Nickel atoms are converted to nickel ions in solution.

d. The blue color of the solution would become lighter.

You can learn more about redox reactions here: brainly.com/question/13978139

6 0
1 year ago
´ Identify the independent, dependent, and controlled variables in your experiment which is how does adding salt affect the free
Margaret [11]
<span>An independent variable is a variable that is not affected in the experiment. It is what experimenter controls. Here, the concentration of salt is the independent variable.
On the other side, a dependent variable is called dependent because it depends on the independent variables. It is what is affected and observed during the experiment. Here, the freezing point of water is affected and, thus, it is the dependent variable.
A controlled variable is a variable that must remain unchanged (must be constant) during the experiment so that the effect on the dependent variable depends only on the independent variable. Here, the volume of water must be constant, so it is the controlled variable.

</span>
7 0
3 years ago
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