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Verizon [17]
3 years ago
15

The diagram below represents reaction of reactant A and reactant B combining to form product C.

Chemistry
1 answer:
OleMash [197]3 years ago
7 0

Answer:B

Explanation:

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How do carrier proteins transport substances across cell membranes?
stepan [7]
<em>Transport of substances across cell membrane:</em>
<em>Carrier proteins facilitate transport of material across a membrane by changing its shape to allow a substance to pass through its membrane. It transports substances from high concentration to lower concentration levels.</em>
7 0
3 years ago
What is the charge on a hypothetical ion with 85 protons and 83 electrons?
lys-0071 [83]

Explanation:

hope this answer was helpful

7 0
3 years ago
A barium hydroxide solution is prepared by dissolving 1.90 g of Ba ( OH ) 2 in water to make 71.1 mL of solution. What is the co
goldenfox [79]

Answer:

The molarity of this solution is 0.156 M

Explanation:

Step 1: Data given

Mass of Ba(OH)2 = 1.90 grams

Molar mass Ba(OH)2 = 171.34 g/mol

Volume of the solution = 71.1 mL = 0.0711 L

Step 2: Calculate moles Ba(OH)2

Moles Ba(OH)2 = mass Ba(OH)2 / molar mass Ba(OH)2

Moles Ba(OH)2 = 1.90 grams / 171.34 g/mol

Moles Ba(OH)2 = 0.0111 moles

Step 3: Calculate molarity

Molarity solutin = moles Ba(OH)2 / volume solution

Molarity solution = 0.0111 moles / 0.0711 L

Molarity solution = 0.156 M

The molarity of this solution is 0.156 M

6 0
3 years ago
A solution contains 2 meq/ml of kcl. if a 20 ml ampule of this solution is diluted to 1 liter what is the percent strength of th
Serjik [45]

We are given that the concentration of the KCl is 2 meq / mL. Assuming that the ampule also has exactly this concentration, therefore:

 

amount of KCl in ampule = (2 meq / mL) * (20 mL)

amount of KCl in ampule = 40 meq

 

This amount of KCl is now inside a solution of 1 Liter (also equivalent to 1000 mL), therefore the new concentration in the resulting solution is:

new concentration = 40 meq / 1000 mL

new concentration = 0.04 meq / mL

 

Since 0.04 in decimal is 4% in percentage, therefore the strength of the resulting solution is 4% KCl.

7 0
3 years ago
Determine the molecular shape of each of the following species.
Rus_ich [418]

Answer:

See-saw

Explanation:

To determine the molecular shape of BrF₄⁺, you need to

1.) Calculate the valence electrons of BrF₄⁺

    ----> Add the valence electrons of each individual atom

    ----> Take the positive charge into account (subtract 1 electron)

2.) Draw the Lewis Dot diagram of BrF₄⁺

    ----> Each bond has 2 electrons

    ----> Bromine can have an expanded octet

3.) Determine the molecular shape of BrF₄⁺

3 0
2 years ago
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