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igomit [66]
3 years ago
12

Directions: Fill in the blanks to complete the idea. 1. Constellations are group of that form pattems in the night sky 2. Ursa M

ajor, Cassiopeia, and Orion are some common 3. Stars are used to tell and time, predict weather, and to serve as birth sign
PASAGOT PO NG MAAYOS
KAILANGAN LANG PO
BRAINLIEST+FOLLOW+HEART+POINT
BAD ANSWER-REPORT
​

Chemistry
1 answer:
siniylev [52]3 years ago
8 0

1. Constellations are group of <u>stars</u> that form pattems in the night sky

2. Ursa Major, Cassiopeia, and Orion are some common <u>constellations</u><u>.</u>

3. Stars are used to tell <u>directions</u> and time, predict weather, and to serve as birth sign.

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4.Calculate the Hydroxide, Hydrogen ion and POH of solution if the PH of solution is 7.b
trapecia [35]

the ph is gonna be your value and the 4 is gonna be your main subject

so as the ph is your value u gonna ad your ph and 7 and 4 toghter then multiple your answer 2 times  because ph represent multiple and your value  

3 0
3 years ago
A 900.0 mLmL sample of 0.18 MHClO4MHClO4 is titrated with 0.27 MLiOHMLiOH. Determine the pHpH of the solution after the addition
lesya [120]

Answer: pH of the solution after the addition of 600.0 ml of LiOH is 7.

Explanation:

The given data is as follows.

    Volume of HClO_{4} = 900.0 ml = 0.9 L,

   Molarity of HClO_{4} = 0.18 M,

Hence, we will calculate the number of moles of HClO_{4} as follows.

       No. of moles = Molarity × Volume

                             = 0.18 M × 0.9 L

                             = 0.162 moles

Volume of NaOH = 600.0 ml = 0.6 L

Molarity of NaOH = 0.27 M

No. of moles of NaOH = Molarity × Volume

                                     = 0.27 M × 0.6 L

                                     = 0.162 moles

This shows that the number of moles of HClO_{4} is equal to the number of moles of NaOH.

Also we know that,

         HClO_{4} + NaOH \rightarrow NaClO_{4} + H_{2}O

As 1 mole of HClO_{4} reacts with 1 mole of NaOH then all the hydrogen ions and hydroxide ions will be consumed.

This means that pH = 7.

Thus, we can conclude that pH of the solution after the addition of 600.0 ml of LiOH is 7.

3 0
3 years ago
The following characteristics describe which of these terms? The substance is mixed uniformly throughout and each part of the su
katrin [286]
Hi there! I had the same question on my test as well!
The correct answer is (A) Homogeneous mixture!
I hope I helped you, and I am 100% this is the right answer!
8 0
3 years ago
Read 2 more answers
One atmosphere (atm) is equal to which of the following?
djverab [1.8K]
I’m pretty sure it’s 760 mmHG (mm of mercury)
6 0
3 years ago
Read 2 more answers
Give one example of Lewis acid
erma4kov [3.2K]

Answer:

<em><u>Copper </u></em><em><u>(</u></em><em><u>Cu2)</u></em><em><u> </u></em><em><u>,</u></em><em><u> </u></em><em><u>Iron </u></em><em><u>(</u></em><em><u>Fe2+</u></em><em><u> </u></em><em><u>Fe3 </u></em><em><u>+</u></em><em><u>)</u></em><em><u> </u></em><em><u>,</u></em><em><u> </u></em><em><u>and </u></em><em><u>Hydrogen </u></em><em><u>ion </u></em><em><u>(</u></em><em><u>H+</u></em><em><u>)</u></em>

Explanation:

I hope it helps u dear! ^_^

8 0
2 years ago
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