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NNADVOKAT [17]
2 years ago
7

When silver coins are found in ancient shipwrecks, they are coated with a black crust. What question could you ask to help you d

ecide whether the silver underwent a chemical change or a physical change?
Chemistry
1 answer:
Aleks04 [339]2 years ago
5 0
You could ask whether the black crust is a new substance formed from silver underwent a chemical change because a chemical change produces a new substance.
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Explain how tectonic plates move relative to one another at a transform plate boundary
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Answer:The movement of the plates creates three types of tectonic boundaries: convergent, where plates move into one another; divergent, where plates move apart; and transform, where plates move sideways in relation to each other. They move at a rate of one to two inches (three to five centimeters) per year.

Explanation:

6 0
3 years ago
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Igoryamba

Answer:

The arm that was not sprayed with anything

Explanation:

The control group would be <u>the arm that was not sprayed with anything</u>.

<em>The control group during an experiment is a group that forms the baseline for comparison in other to determine the effects of a treatment. The control group does not include the variable that is being tested and as such, it provides the benchmark to measure the effects of the tested variable on the other group - the experimental group. In this case, the experimental group would be the arm that was sprayed with the repellent.</em>

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Which of the following is a common property of both strong acid and strong base?
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3 0
2 years ago
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Milk of magnesia has the chemical formula Mg(OH)2. What is the mass of 3.2 moles of milk of magnesia? The molar Mass of magnesiu
GenaCL600 [577]
To calculate the mass of milk of magnesia given, we need certain data like molar mass of the compound which needs the atomic mass of the atoms in the compound. We calculate as follows:

Molar mass of <span>Mg(OH)2 = 24.3 g/mol + (2 x (16 + 1.0)) = 58.30 g/mol

Mass = 3.2 mol (</span>58.30 g/mol) = 186.56 grams
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3 years ago
What is the mass of 4.84×10^21 platinum atoms?
Ket [755]
The mass will be 1.54g
7 0
2 years ago
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