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saul85 [17]
2 years ago
10

Can you please help me I need help Thank you to the person that helped

Chemistry
2 answers:
Black_prince [1.1K]2 years ago
7 0

Answer:

Model

Theory

Ellipse

Explanation:

Stan One Direction for better grade

Vlada [557]2 years ago
3 0
1. model
2.theory
3.ellipse
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Which of these is NOT a result of human actions?
Kazeer [188]

Answer:

B : acid rain ?  

Explanation:

how would humans- well i mean factories couldddddd produce it but uhhhh

4 0
2 years ago
What are the types of chemical equations ?
harkovskaia [24]

Answer:

combination

Decomposition

single displacement

double displacement

combustion

Redox    

Explanation:

7 0
2 years ago
An aqueous solution of barium hydroxide is standardized by titration with a 0.102 M solution of perchloric acid. If 10.3 mL of b
Vesna [10]

<u>Answer:</u> The molarity of barium hydroxide solution is 0.118 M.

<u>Explanation:</u>

To calculate the concentration of acid, we use the equation given by neutralization reaction:

n_1M_1V_1=n_2M_2V_2

where,

n_1,M_1\text{ and }V_1 are the n-factor, molarity and volume of acid which is HClO_4

n_2,M_2\text{ and }V_2 are the n-factor, molarity and volume of base which is Ba(OH)_2

We are given:

n_1=1\\M_1=0.102M\\V_1=24.0mL\\n_2=2\\M_2=?M\\V_2=10.3mL

Putting values in above equation, we get:

1\times 0.102\times 24.0=2\times M_2\times 10.3\\\\M_2=0.118M

Hence, the molarity of Ba(OH)_2 solution will be 0.118 M.

6 0
2 years ago
Calculate the volume of a 0.5M solution containing 20g of NaOH
Tju [1.3M]

Answer:

1L

Explanation:

First, let us calculate the number of mole present in 20g of NaOH. This is illustrated below:

Mass = 20g

Molar Mass of NaOH = 23 + 16 + 1 = 40g/mol

Number of mole =?

Number of mole = Mass /Molar Mass

Number of mole of NaOH = 20/40 = 0.5mol

From the question given, we obtained the following data:

Molarity = 0.5M

Mole = 0.5mole

Volume =?

Molarity = mole /Volume

Volume = mole /Molarity

Volume = 0.5/0.5

Volume = 1L

6 0
3 years ago
Read 2 more answers
What is the density of a liquid that has a mass of 27g and a volume of 30mL?
NNADVOKAT [17]
  • Answer: 7 g/cm to the third power
  • Hope this helps
  • Please mark brainliest
  • Have a nice day
  • stay safe

-Carrie

8 0
3 years ago
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