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3 years ago

Analyze how water affects mass movements by using two examples of mass movement.-

Chemistry

1 answer:

Natali [406]3 years ago

6 0

Answer:

Types Descriptions

Flows occur when soil or rock acts like a liquid

Slumps a slice of material that moves as one piece along a curved surface

Landslides made up of unconsolidated rock; includes rockslides and avalanches

Creeps material that moves slowly down gently sloping areas

Explanation:

Googled it.

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Q:- Calculate the number of ions of the following compound:- 16g of H₂CO3

Anna007 [38]

Answer:

= 1.553 x 10²³ ions

Explanation:

One mole of a compound or a substance consists of 6.02 x 10²³ ions. 6.02 x 10²³ is also referred to as Avogadro's number/constant.

From the above question, we have been asked to determine the number of ions in 16g of H₂CO3.

The relative formula mass (RFM) of H₂CO3 is 62.026 u:

Derived as;

H₂CO3 = (2 x 1.008) + (12.01 x 1) + (3 x 16.00) u

= 62.026 u.

Number of moles = Mass/RFM

$moles \: = \frac{16}{62.026} \\ = 0.2579563 \\ = 0.2580 \: moles$

1 mole = 6.02 x 10²³ ions

0.2580 moles = ?

$= \frac{0.2580 \times 6.02 \times 10 ^{23} }{1} \\ = 1.553 \times {10}^{23} \: ions$

Hence the number of ions in 16g H2CO3 = 1.553 x 10²³

8 0

2 years ago

I need help putting these in order . Someone Please help me .

Lynna [10]

By lowering temperature from liquid to solid, atoms lose some of their energy, when atoms slow down, they move close together and make the matter denser.

4 0

3 years ago

Match the words to the definitions below.

puteri [66]

Answer:

Explanation:

1. Turns litmus paper blue, taste bitter, donate OH- ions, feel slippery, 8-14 on pH scale.

BASE

BASE: A base is a substance that reacts with water to yield excess hydroxide ions.

Some of its characteristics are:

>It has a bitter taste

>Their aqeuos solutions have a soapy feel

>They have a PH greater than 7

>They turn red litmus paper blue

>They are electrolytes

2. The amount of ions per an amount of solvent. Ex: 10g salt/100g water

CONCENTRATION

Concentration is the amount of solute that can be found in a solution.

3. A lab procedure to deliver a measured volume of solution, generally measured in ml.

TITRATION

Titration is a laboratory procedure that is used to determine the amount of solution that is needed to drive a reaction to completion. It involves adding a solution to a known volume of another solution.

4. A substance or solution that resists changes in pH by stabilizing hydrogen ion concentration.

BUFFER

A buffer is solution that is made up of weak acids and their salts or weak bases and their salts. Such solutions are able to resist changes in PH

5. Turns litmus paper red, taste sour, donate H+, corrode metals, 0-6 on pH scale.

ACID

An acid is a proton donor, hydrogen ions.

Characteristics:

>Acids turns blue litmus paper red, they have sour taste and easily corrodes metals.

>They have a PH value between 0-6 on the scale.

>They are generally electrolytes

6. Logarithmic scale to indicate the amount of hydrogen ions in solution.

PH SCALE

A PH scale is a logarithmic scale that runs from 1-14 and is used to indicate the amount of hydrogen ions in a solution.

7. A chemical (dye created from lichens) that changes color in response to changes in pH.

LITMUS PAPER

Litmus paper is made of dyes created from lichen and it changes its color as PH changes. Acids turns blue litmus paper red while bases changes the color of litmus to blue from red. Litmus test is a popular test for solutions.

8. Acids and bases are added proportionally and result in a chemical reaction that causes the pH of a solution to reach pH 7.

NEUTRALIZATION

Neutralization is the reaction of acids and bases to produce salts and water. The endpoint of neutralization reaction signifies the point at which equal number of bases neutralizes an acid. The PH is 7 at this point.

5 0

4 years ago

A 12.8-g sample of sodium completely reacts with 19.6 g of chlorine to form 32.4 g of sodium chloride. These data are A 12.8-g s

coldgirl [10]

Answer: The data are consistent with the law of conservation of mass because the mass of reactants equals the mass of products

Explanation:

According to the law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of products has to be equal to the mass of reactants. The number of atoms of each element has to be same on reactant and product side. Thus chemical equations are balanced.

Given: mass of sodium = 12.8 g

mass of chlorine = 19.6 g

mass of reactants = mass of sodium + mass of chlorine = 12.8 g + 19.6 g = 32.4 g

Mass of product = Mass of sodium chloride = 32.4 g

As mass of reactant = mass of products , Thus results are in accordance with the law of conservation of mass.

5 0

3 years ago

You wish to make a 0.339 m h2so4 solution from a stock solution of 12.0 m h2so4. how much concentrated acid must you add to obta

Alex_Xolod [135]

When preparing diluted solutions from concentrated solutions , we can use the following equation;
c1v1 =c2v2
Where c1 and v1 are the concentration and volume of the concentrated solution
c2 is the concentration of the diluted solution to be prepared
v2 is the volume of the diluted solution
Substituting the values;
12.0 M x v1 = 0.339 M x 100 mL
v1 = 2.825 mL needs to be taken from the stock solution

8 0

4 years ago