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sukhopar [10]
3 years ago
10

A system of 1515 particles, each of which is either an electron or a proton, has a net charge of −6.032×10−17

Chemistry
1 answer:
almond37 [142]3 years ago
7 0

........................................

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Carbon dating requires that the object being tested contain
luda_lava [24]

Answer:

Organic Material

Explanation:

Carbon Dating is the process in which the age of a piece of organic matter is determined by the proportions of carbon isotopes it contains.

4 0
3 years ago
A company produces and tests a new mineral supplement designed to prevent the common
irga5000 [103]

A change which would remove the source of this error is to: Test a fourth group, in which participants do not receive the mineral supplements.

<h3>What is a scientific method?</h3>

A scientific method can be defined as the various techniques that are adopted to observe, investigate, examine and study a particular thing while giving explanations on the basis of the evidence, theory, proof, hypothesis, or factual information they derived from the research work.

In this scenario, a claim was made by the company its mineral supplements can effectively prevent common cold. However, this claim was disputed by a scientist because there exist an error in the group setup.

<h3>How to remove an error in science</h3>

For this investigation, an effective and efficient way to remove this source of error would be by testing a fourth group, in which the mineral supplements is not administered to any of the participants.

Read more on scientific method here: brainly.com/question/17216882

8 0
3 years ago
At PO2 = 40 mm Hg, which statement about the saturation of either myoglobin (Mb) or hemoglobin (Hb) is true? At PO2 = 40 mm Hg,
Damm [24]

Answer:

At this partial pressure of oxygen, Mb would be almost completely saturated but Hb would not.  

Explanation:

The oxygen saturation curves for Mb and Hb are quite different. The curve for Mb is hyperbolic while that for Hb is sigmoidal.

Mb reaches oxygen saturation before Hb.

Thus, at a partial pressure of 40 mmHg, Mb is almost completely saturated but Hb is not.

4 0
3 years ago
Which picture shows the particles in a mixture?
kakasveta [241]

hi <3

a mixture is a group of compounds that aren't chemically combined

thus, it would be picture III and IV.

hope this helps :)

8 0
3 years ago
Read 2 more answers
A 25.0 ml solution of .0600 M EDTA was added to a 57.0 ml sample containing an unknown concentration of V3+. All V3+ present for
Rom4ik [11]

Explanation:

Let us assume that the ratio for the given reaction is 1:1.

Therefore, we will calculate the moles of Ga^{3+} as follows.

   Moles of Ga^{3+} solution = molarity × volume (L)

                              = 0.0440 M × 0.014 L

                              = 0.000616 moles

Moles of excess EDTA = 0.000616 moles

Also, the initial moles of EDTA will be calculated as follows.

     Total initial moles of EDTA = 0.0600 M × 0.025 L

                                                 = 0.0015

Therefore, moles of EDTA reacted with V^{3+} will be as follows.

                = 0.0015 - 0.000616

                = 0.00088 moles

Since, we have supposed a 1 : 1 ratio between V^{3+} and EDTA .

So, moles of V^{3+} = 0.00088 moles

Now, we will calculate the molarity of V^{3+} as follows.

       Molarity of V^{3+} solution = \frac{\text{moles}}{\text{volume (L)}}

                             = \frac{0.00088 moles}{0.057 L}

                             = 0.015 M

Thus, we can conclude that the original concentration of the V^{3+} solution is 0.015 M.

4 0
3 years ago
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