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3 years ago

Which choice best names the type or types of rock that can become metamorphic rock?

Chemistry

2 answers:

I am Lyosha [343]3 years ago

4 0

The answer is going to be D

Pani-rosa [81]3 years ago

4 0

Answer:

D) Igneous, sedimentary, and metamorphic rocks

Explanation:

Metamorphic rocks can be formed from igneous, sedimentary and even metamorphic rocks. The parents rocks are subjected under varied temperature and pressure to form metamorphic rocks. The changes may be new textures or mineral assemblage or both. The parents rocks which are converted to metamorphic rocks never melts . In other words the transformation takes place in it solid state.

The process of formation of metamorphic rocks is known as metamorphism. Example of metamorphic rocks is marble. The marble is formed when limestone a sedimentary rock metamorphosed.

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B- How many electrons does sodium have?

ziro4ka [17]

Answer: sorry I’m late but it is 11 electrons

Explanation:

7 0

3 years ago

Five calcite, CaCO3 (MM 100.085 g/mol), samples of equal mass have a total mass of 12.2±0.1 g . What is the average mass and abs

Westkost [7]

Answer:

The average mass of calcium in each sample is: 0.978 g

The absolute uncertainty is: 0.008 g

Explanation:

The absolute uncertainty of the total samples indicated in the statement is ± 0.1 g.

When you multiply or divide quantities with uncertainties, you calculate the final uncertanty by adding the relative uncertainties together.

The relative uncertainty is the absolute uncertainty divided by the quantity:

Relative uncertainty = 0.1g / 12.2 g = 0.008

The average mass of calcium is calculated using proportions, along with the molar masses:

Molar mass of calcium: 40.078 g/ mol (from a periodic table)

Molar mass of calcite: 100.085 g/mol (given)

Proportion:

40.078 g of calcium / 100.085 g of calcite = x / 12.2 g of calcite

x = 12.2 × 40.078 / 100.085 g = 4.89 g calcium

So the total mass of calcium in the five samples is 4.89 g, and the average mass in each sample is:

Average mass = total mass of five samples / number of samples

Average mass = 4.89 g / 5 = 0.978 g of calcium

So, the first answer is that the average mass of calcium in each sample is 0.978 g ( keep 3 signficant figures, such as the quntitiy 12.2 shows, as you have only used multiplication and division).

The absolute uncertainty of each sample is the relative uncertainty multiplied by the average mass of calcium of the five samples, rounded to one decimal:

Absolute uncertainty = 0.978 g × 0.008 ≈ 0.008 g

The answer to the secon question is that the absolute uncertaingy of calcium in each sample is 0.008 g.

7 0

3 years ago

Calculate the wavelength of a photon having energy of 1.257 X 10-24 joules. (Planck’s constant is 6.626 x 10-34 joule seconds; t

maw [93]

$E=h\nu\\\\
\nu=\frac{c}{\lambda} \ \ \ \Rightarrow E=\dfrac{hc}\lambda}\\\\
\lambda=\dfrac{hc}{E}=\dfrac{6,626*10^{-34}Js*2,998*10^{8}\dfrac{m}{s}}{1,257*10^{-24}J}=15,803*10^{\frac{-34+8}{-24}}m=\\\\\\=15,803*10^{-2}m=1,5803*10^{-1}m$

5 0

3 years ago

State three properties that make copper suitable for use in plumbing.

marusya05 [52]

- low conductivity

- generally non-toxic

- ductile

- doesn’t corrode as fast as other metals

6 0

3 years ago

What are some ways you can determine a chemical change has occured

FromTheMoon [43]

1. Color changes.

The Statue of Liberty, though known for its green color, was originally covered in a layer of copper. After a redox (reduction-oxidation reaction) the color changed due to a chemical change.

2. Gas Production

3. Light Produced

Light sticks work as the result of a chemical reaction between hydrogen peroxide and phenol oxalate ester.

4. Temperature Changes

5. Volume Change

4 0

3 years ago