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Ganezh [65]
3 years ago
5

Match the correct term with its definition. The color of the powder of a mineral. Answer 1 The sinking of one lithospheric plate

beneath another. Answer 2 A process that includes both the disintegration and decomposition of surface rock material. Answer 3 The chemical altering of the composition of the material. Answer 4 How much matter is in a certain amount of space; mass divided by volume. Answer 5 The physical or mechanical breakdown of Earth's materials. Answer 6 Movement of Earth's materials by glacial action. Answer 7 The ability of a mineral to resist scratching. Answer 8 A type of igneous rock that forms inside the Earth. Answer 9 The rock formed by the cooling and solidifying of molten rock.
Chemistry
1 answer:
kherson [118]3 years ago
8 0

Answer:

Explanation:

1.The color of the powder of a mineral.

                      Answer 1 : Streak

Streak is the color displayed by a mineral in powdered form. The streak of some minerals differs from their original color.

2.The sinking of one lithospheric plate beneath another.

                     Answer 2 : Subduction

At a convergent margin, a denser lithospheric plate falls beneath the lighter one in a process called subduction. This region is called the subduction zone.

3.A process that includes both the disintegration and decomposition of surface rock material.

                    Answer 3: Weathering

Weathering is defined as the physical disintegration and chemical decomposition of rocks to form soils and sediments on the earth surface.

4.The chemical altering of the composition of the material.

                    Answer 4: Chemical weathering  

It is the decomposition or altering of earth materials chemically.

5. How much matter is in a certain amount of space; mass divided by volume.

                     Answer 5 : Density

Density is defined as the mass per unit volume.

6. The physical or mechanical breakdown of Earth's materials.

                     Answer 6: Physical weathering

Physical weathering is the disintegration of earth materials using mechanical means.

7. Movement of Earth's materials by glacial action.

                         Answer 7: Glacial erosion

This is the wearing and washing away of earth's materials by action of moving glaciers.

8. The ability of a mineral to resist scratching.

                        Answer 8: Hardness

Hardness is expressed in an ability to resist deformation and any from of abrasion

             

9. A type of igneous rock that forms inside the Earth.

                       Answer 9: Plutonic or intrusive igneous rocks

Igneous rocks that forms within the crust are called plutonic or intrusive igneous rocks.

10. The rock formed by the cooling and solidifying of molten rock.

                     Answer 10: Igneous rocks

Igneous rocks are rocks that formed from cooling and solidifying of molten rocks

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1. According to the equation, what mass of hydrogen fluoride is necessary to produce 2.3 g of sodium fluoride?
Luba_88 [7]

Answer:

1.09 grams

Explanation:

According to the following chemical equation:

HF + NaNO₃ -> HNO₃ + NaF

1 mol of hydrogen fluoride (HF) produces 1 mol of sodium fluoride (NaF). Thus, we first convert from mol to grams by using the molar mass (MM) of each compound:

MM(HF)= (1 g/mol x 1 H) + (19 g/mol x 1 F) = 20 g/mol HF

1 mol HF x 19.9 g/mol HF = 20 g

MM(NaF) = (23 g/mol x 1 Na) + (19 g/mol x 1 F) = 42 g/mol NaF

1 mol NaF x 42 g/mol NaF = 42 g

Thus, from 20 g of HF are produced 42 g of NaF  ⇒ 20 g HF/42 g NaF. We multiply this stoichiometric ratio by the mass of NaF produced to calculate the required mass of HF:

20 g HF/42 g NaF x 2.3 g NaF = 1.09 g HF

Therefore, 1.09 grams of HF are necessary to produce 2.3 g of NaF.

5 0
3 years ago
A student added magnesium hydroxide to a solution of hydrochloric acid. What is the
r-ruslan [8.4K]

Answer:

bleh

Explanation:

Neutralization reaction between magnesium hydroxide and hydrochloric acid Mg(OH)2(s) + 2HCl(aq) → 2H2O(l) + MgCl2(aq) b.

so uh pretty sure Mg(OH)2(s) + 2HCl(aq) → 2H2O(l) + MgCl2(aq) b.

correct me if im wrong <3

6 0
3 years ago
Which two scenarios illustrate the relationship between pressure and volume as described by Boyle’s law?
Airida [17]

The correct answer is option 2 and 3.

The two scenarios that illustrate the relationship between pressure and volume as described by Boyle’s law are as follows:

2. The volume of an underwater bubble increases as it rises and the pressure decreases.

3. The pressure increases in an inflated plastic bag when the bag is stepped on.

According to Boyle's law, pressure of a gas is inversely proportional to its volume at constant temperature. This means that pressure rises as the volume increases and vice versa.

3 0
4 years ago
Read 2 more answers
Write about buffer solution with its formulas​
musickatia [10]

Answer:

A buffer solution is a mixture of two pair salts to maintain a stable pH.

Explanation:

This mixture is made always with a complementary pair of salts (one acid an another basic).

Example:

Acetic Acid (CH3COOH) and Sodium Acetate (NaH3COO).

So when you add a little bit more acid to this mixture, the basic part of the buffer, in this case the Sodium Acetate, will neutralize it and the pH will remain the same.

On the other hand, if the mixture receives some basic substance, the acid part of the buffer, the acetic acid, will neutralize it, so again the pH will remain the same.

8 0
3 years ago
How many grams of O2 are produced as 0.033 mol of water decompose
PolarNik [594]

Answer:  This can be quickly solved with "traintracks"

Explanation:

You start w/ grams of water and want to find moles of oxygen gas produced.  

So you want to Convert:  

Grams of water -> moles of water -> moles of oxygen gas.  

The two things you need to know to set up the tracks are:  

1)Molar mass of water- H2O  

Hydrogen - 1.008(x2)  

Oxygen - 16.00  

Water - 18.016

6 0
3 years ago
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