A...because both of them(carbon and oxygen)are nonmetal
Answer:
<u>The answer is 6.55 * 10⁻⁷</u>
Explanation:
Let's write 0.000000655 mL in scientific notation:
The first step is you have to move the decimal place until you have a number between 1 and 10. If you keep moving the decimal point to the right in 0.000000655 you will get 6.55.
Now, the second step is you count how many places you moved the decimal point. You moved it 7 places to the right to change 0.000000655 to 6.55.
Finally, You need to show that you moved the decimal point 7 places to the right by noting that the number should be multiplied by 10⁻⁷ because a power of ten with a negative exponent, such as 10⁻⁷, means the decimal was moved to the right.
<u>The answer is 6.55 * 10⁻⁷</u>
Answer:
chlorine
Explanation:
sodium chloride, it is missing chlorine
Explanation:
As we know that chloride ion is halogen. So it has seven valence electrons in its valence shell. Hence it gains one electron from others during chemical reaction to be stable. So Chloride ion have a negative charge of -1.
Hope it will help :)❤
For the original solution,
Concentration = 85g/L = 85g/1000ml
Required Volume = 150ml
(a)
Concentration = Mass/Volume
⇒ 85g/1000ml = Mass of the solute/150ml
⇒ Mass of the solute = 85 x 150/1000
⇒ Mass of the solute = 12.75 grams
Hence, 12.75 grams of the solute is required to prepare the original solution.
(b)
Now,
Concentration of the original solution = 85g/L = M1
Required concentration = 50g/L = M2
Final Volume = 500 ml = V2
Required Volume from the original solution = V1 =?
As we know,
M1V1 = M2V2
Hence,
85g/L x V1 = 500 ml x 50g/L
⇒ V1 = 500 X 50 / 85
⇒ V1 = 294.11 ml
Therefore, 294.11 ml of the original solution is required to make the diluted solution.
<h3>What is a Stock solution?</h3>
- A stock solution is a very potent mixture. These solutions are quite helpful since we may take a small amount of the stock solution and dilute it to the required concentration.
- These ready-to-use chemical reagents can be prepared quickly thanks to these stock solutions. It also aids in material conservation.
- As a result, just the amount of stock and solvent required for the dilution process is consumed when utilizing a stock solution to low-concentrated solution.
- Because we simply need to dilute the stock solution instead of preparing the solution using many reagents and complex procedures, it is also crucial to conserve storage space.
- Additionally, it enhances experiment accuracy.
- A chemical reagent is present in vast quantities as a stock solution. It has a uniform concentration.
- Examples of typical stock solutions in laboratories are sodium hydroxide and hydrochloric acid. These play a critical role in creating titration-related solution preparations.
To learn more about the Stock solution, refer to:
brainly.com/question/28083950
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