CHEMISTRY HIGH SCHOOL

20 g of sugar is stirred into a beaker containing 100 g of water. After the sugar has completely dissolved, the solution is put on a scale. What is the mass of the solution?

Answers

Answer 1
Answer:

The mass of the solution of sugar and water is 120 grams.

What is mass?

Mass is the quantity of matter of a physical body.

The mass of the sugar is given is 20g

The mass of the water is 100 g.

100 + 20 = 120 gram

Thus, the mass of the solution of sugar and water is 120 grams.

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Answer 2
Answer: The mass of the solution should be 120g since 20g of sugar were added to 100g and 100+20=120.
I hope this helps.  Let me know in the comments if anything is unclear.  

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How is 0.00025 written in scientific notation

Answers

2.5 × 10⁴ is the scientific notation for 0.00025. this is done by moving decimal to the first non zero number.

When a number is too big or too tiny to be readily stated in decimal form, or if doing so would involve writing down an exceptionally lengthy string of digits, it can be expressed using scientific notation. It is also known as standard form within the UK and scientific form, standard index form, and standard form. Scientists, mathematicians, or engineers frequently utilise this base ten notation because it may make some mathematical operations simpler. 2.5 × 10⁴ is the scientific notation for 0.00025. this is done by moving decimal to the first non zero number.

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Answer:

2.5 * 10^4

Explanation:

You have a 1 L container of a gas at 20 C and 1 atm. Without opening the container, how could you tell whether the gas is chlorine or fluorine?a. measure the mass of the gas
b. measure the speed of the gas molecules
c. measure the volume of the container
d. measure the pressure of the gas in the container

Answers

Without opening the container, a. measure the mass of the gas. Once you get the mass of the gas, you can calculate its density because you already know its volume which has a value of 1 liter. To take the mass of the gas, make sure you don't include the mass of the container. It would be better to measure the container before putting the gas and after putting the gas, and then subtracting the values.

The geometry for boron atom in F3B-NH3 is...A) trigonal pyramidal
B) tetrahedral
C) trigonal bipyramidal
D) bent

Answers

Boron is bonded to four different atoms, the most stable configuration, and the only configuration that it can have is tetrahedral.

Whatd to do to make the time go by faster

Answers

Answer:phone

Explanation:phone

Answer:

do something you love to do, or watch your favorite TV show or series :)

For the reaction below, describe the temperature and pressure conditions that would produce the highest yield of the forward reaction. Explain your answer in terms of Le Châtelier's principle.

Answers

The correct answer for the question that is being presented above is this one: "CO(g) + 2H2 (g) <---> CH3OH (g) and that the reaction is exothermic (the delta H value is negative). The reaction is exothermic, so lowering the temperature will shift the equilibrium toward the right. Since the reaction uses 3 moles of gas to form 1 mole of gas, increasing the pressure will shift the reaction toward the right. So, low temperature and high pressure will produce the highest yield. Le Chatelier's principle states that when a system at equilibrium is disturbed, the system responds in such a way to minimize the disturbance."

The pH scale for acids and bases ranges from _____.A.) 1-7
B.) 0-14
C.) 1-14
D.) 1-12

Answers

The pH scale for acids and bases ranges from 1 - 14. The answer is letter C. The rest of the choices do not answered the question above. There are quite a few relationships between [H+] and [OH−] ions. And because there is a large range of number between 10 to 10-15 M, the pH is used. pH = -log[H+] and pOH = -log[OH−]. In aqueous solutions, [H+ ][OH- ] = 10-14. From here we can derive the values of each concentration.

 

 -log[H+ ] + -log[OH- ] = -log[10-14]

pH + pOH = 14

So pH = 14 – pOH and pOH = 14 – pH 

the correct answer is  B.) 0-14

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