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Alik [6]
2 years ago
11

10. Aqua means "water" or "a light blue color." Marine refers to the sea. Use this information

Chemistry
2 answers:
ahrayia [7]2 years ago
5 0

Answer:

Aquamarine

Explanation:

This stone's colour is pale greenish blue.

It ranges between 7.5 and 8. Their's colour is similar to seawater. Aquamarine Stones are hard. They can easily scratch glass. They are clear to the eye, atleast most of them.

Zielflug [23.3K]2 years ago
3 0

Answer:

\huge\blue{ \mid{ \underline{ \overline{ \tt  ♡ AQUAMARINE ♡ }} \mid}}

=> The colour of this stone is usually a pale greenish blue, owing to the presence of iron impurities. Stones that are treated with heat look more blue than green. On the Mohs scale of hardness, aquamarine ranges between 7.5 and 8 making it a relatively hard gemstone.

=> The best way to identify a real aquamarine stone is by looking at its colour. In its natural form, they have a pale blue colour, which is similar to seawater. They may have a slight green or yellow tint as well. Naturally occurring gems have excellent clarity and transparency.

=> The hardness of the stone is another feature you can use to identify the stone. Aquamarine stones are hard and they don’t get scratches easily. However, they can easily scratch glass and other such surfaces. So, if you find visible scratches on the stone, rethink your decision to buy it.

=> Most faceted aquamarine stones are clean to the eye and clear of any inclusions. However, translucent and opaque aquamarine is also available. These are usually fashioned into cabochons or beads. In some cases, inclusions may appear as parallel tubes. Such stones can be crafted to show a cat’s eye. Stones with cat’s eye and star effect are rare and highly priced.

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Convert 5795 grams into pounds.
Rama09 [41]

Answer:

12.776 pounds

Explanation:

hope this helps:)

3 0
3 years ago
A sample taken from a layer of mica in a canyon has 2.10 grams of potassium-40. A test reveals it to be 2.6 billion years old. H
Setler79 [48]

Problem One

<em><u>Formula</u></em>

N(t) = No * (1/2)^[t/t_1/2]

<em><u>Givens</u></em>

N(t) = the current mass of the sample = 2.10 grams

No = The original mass of the sample = No [We're trying to find this].

t = time elapsed which is 2.6 billion years or 2.6 * 10^9 years.

t1/2 = the 1/2 life time which is 1.3 billion years of 1.3 *10^9

<em><u>Solution</u></em>

2.10 grams = No (1/2)^(2.6*10^9/1.3 * 10^9)

The 10^9s cancel and you are left with 2.6/1.3 = 2

2.10 grams = No (1/2)^2

2.10 grams = No (1/4)          Multiply both sides by 4

2.10 * 4 = No (1/4)*4

8.4 grams = No

which is how many grams you originally had.

Answer B.

Problem Two

_{1}^{2}\text{H} + _{1}^{2}\text{H} \longrightarrow _{z}^{y}\text{x}+_{0}^{1}\text{n}

Solve for y

2 + 2 = y + 1

4 = y + 1

y = 3

Solve for z

1 + 1 = z + 0

z = 2

The 2 tells you that it is the second member on the periodic table. That's Helium. So the answer looks like this.

_{2}^{3}\text{He}

The mass of the Helium is 3 and its number is two.

5 0
3 years ago
Which statement is true of energy in reactants during an endothermic reaction? (1 point)
pychu [463]

All of the energy from the reactants will be lost to the surroundings.The energy found in the reactants remains in the system, and the reactants also take energy from the

surroundings is true of energy in reactants during endothermic reaction.

<h3>What is Endothermic reaction?</h3>

Endothermic reaction is a reaction in thermochemistry where the reactants absorb heat from the surrounding to form the products.

In an endothermic reaction, the products have more energy than the reactants, that is they absorbed more energy. The reactants have less energy,that is they loss energy . Therefore, the change in enthalpy is positive, heat is absorbed from the surroundings during the reaction.

Therefore, All of the energy from the reactants will be lost to the surroundings.

The energy found in the reactants remains in the system, and the reactants also take energy from the

surroundings is true of energy in reactants during endothermic reaction.

For more details on endothermic reaction check the link below.

brainly.com/question/6506846

7 0
2 years ago
1. Predict the products for the given double replacement reaction: CaCl2 + AgNO3 --&gt;
zheka24 [161]

Answer:

1.   Ca(NO3)2 and AgCl3

2. AgCl3

3. Ca(NO3)2

4. a solid that forms out of a solution

Explanation:

1.

3CaCl2 + 2Ag(NO3)3 --> 3Ca(NO3)2 + 2AgCl3

4 0
3 years ago
at a pressure of 405 kpa and a temperature of 200k the volume of a gas is 6.00cm^3. At what pressure will the new temperature an
Bas_tet [7]

idek what that is but i have the question on my homework rn

6 0
3 years ago
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