If molarity = moles liter , then how many grams of NaCl are needed to make 1 liter of a 0.1 M solution? A) 0.0584 g NaCl B) 3.246 g NaCl C) 5.844 g NaCl D) 58.44 g NaCl

Answers

Answer 1
Answer:

 The grams  of NaCl   that needed  to make 1L  of a 0.1 M solution  is  

5.845 g (answer C)

 calculation

Step 1: find the  moles of NaCl

moles  = molarity  x  volume  in liters

molarity = 0.1 M =0.1 mol/l

= 1 L x 0.1 Mol/L = 0.1 moles


Step 2: find  the   mass  NaCl

mass =  moles x  molar mass

From  periodic  table   the molar mass of NaCl  = 23 +35.45 =58.45 g/mol

mass= 0.1 moles  x 58.45 g/mol =5.845 g appropriate ( answer C)


Answer 2
Answer:

Answer : Option C) 5.844 g NaCl

Explanation :

To calculate the number of grams of NaCl that would be needed to make 0.1 M of solution we have to calculate;

  1. The molecular weight of sodium chloride (NaCl) which is 58.44 g, so one gram molecular weight will be= 1 mole which is 58.44 g.
  2. By dissolving 58.44 g of NaCl upto the final volume of 1 litre, one can get 1 M NaCl solution.
  3. So, to make 0.1 M NaCl solution we have to dilute the mass of salt to 1000 ml of solution as follows;
  4. 0.1 M NaCl solution will require 0.1 x 58.44 g of NaCl = 5.844 g. of NaCl.


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How many moles are in 18g of sugar(C6H12O6)

Answers

1 mole of { C }_( 6 ){ H }_( 12 ){ O }_( 6 ) is 180 grams. (Molar mass).

18 is \frac { 1 }{ 10 } of 180 , so it means 18 grams of { C }_( 6 ){ H }_( 12 ){ O }_( 6 ) is \frac { 1 }{ 10 } moles

To find a molecule's molar mass, you should multiply each atom's number with their atomic mass, in the molecule and add them I mean, there are 6 Carbon atoms, 12 Hydrogen atoms and 6 Oxygen atoms. So,

Atomic mass of Carbon is approximately, 12 amu (atomic mass unit), Hydrogen's is approximately, 1 and Oxygen's is approximately, 16. So :

{ C }_( 6 ){ H }_( 12 ){ O }_( 6 )\n \n C\quad \cong \quad 12\quad amu\n H\quad \cong \quad 1\quad amu\n O\quad \cong \quad 16\quad amu\n \n (6\cdot 12)+(12\cdot 1)+(6\cdot 16)\n \n 72+12+96=180\quad amu\n \quad \quad \quad \quad \quad \quad \quad \quad \quad \quad \n This\quad is\quad the\quad \n glucose\quad molecule's\n molar\quad mass\n \n

Calculate the % Oxygen in NaHCO3

Answers

57.13% is the mass percent of oxygen in sodium bicarbonate. Mass percentage, also known as weight percentage or mass percent.

Mass percentage, also known as weight percentage, is a way of expressing the concentration of a component in a mixture or a compound. It represents the mass of the component (usually expressed in grams) per 100 grams of the mixture or compound. Mass percentage is commonly used in chemistry and other scientific fields to quantify the amount of a particular substance relative to the total mass of the mixture.

Na = 22.99 g/mol

H = 1.00 g/mol

C = 12.01 g/mol

O = 15.99 g/mol

Molar Mass of solution = (22.99 g/mol) + (1.00 g/mol) + (12.01 g/mol) + (15.99 g/mol x 3)

                                     = 83.97 g/mol

(47.97 g/mol) / (83.97 g/mol) x 100 = 57.13%

To know more about mass percent, here:

brainly.com/question/14990953

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Answer:

Molar mass of NaHCO3 = 84.00661 g/mo

Explanation:

This compound is also known as Baking Soda or Sodium Bicarbonate.

Convert grams NaHCO3 to moles  or  moles NaHCO3 to grams

Molecular weight calculation:

22.98977 + 1.00794 + 12.0107 + 15.9994*3

Diagram how a solids molecular structure is different from a liquids molecular structure

Answers

Pretty much, for solids draw the molecules close together and rigid, for liquids, the molecules are spaced apart a little and not all lined up

How do an ionic bond and a covalent bond differ

Answers

Answer:

  • An ionic bond is an attraction between oppositely charged ions. A covalent bond is a sharing of electrons between atoms.

Explanation:

  • The difference between an ionic and a covalent bond is that a covalent bond is formed when two atoms share electrons. Ionic bonds are forces that hold together electrostatic forces of attraction between oppositely charged ions.

What type of Technology would you want to use to study the gas giant planets

Answers

To study the gas giants, scientists and space explorers used spacecraft and probes. And also, one of the breakthroughs, that made exploration in the outer planet much easier was the planet gravity assist concept wherein, a much smaller space craft is used to launch in order to cope up with the accelerated speed if a spacecraft approaches the planet.

The process of making mRNA from DNA is called *‚Äč

Answers

Answer:

Transcription

Explanation: