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solniwko [45]
2 years ago
10

HELP ME GIVE BRAINLEAST HELPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP

PPPPPPPPPPPPPPPPPPPPPP

Chemistry
2 answers:
wlad13 [49]2 years ago
5 0

Answer:A

Explanation:A is the answer

lord [1]2 years ago
3 0

Answer:

Explanation:

Option D because they have to substitute each other

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Can anyone help me? I will give brainliest
Lana71 [14]
Examples of what can be found in each layer of the atmosphere

3 0
3 years ago
Read 2 more answers
2. What if hydrogen were left over?
valentina_108 [34]

Answer: limiting reactant (or limiting reagent): The reactant that determines the amount of product that can be formed in a chemical reaction.

Explanation: Your welcome buddy.

5 0
2 years ago
Density,mass,volume: Is the amount of matter a substance has
LuckyWell [14K]
Density is the mass of a substance per unit volume. Volume is the amount of space an object occupies. Chemical properties- These are properties that can only be observed by changing the identity of the substance

Hope it helped ya out!
5 0
3 years ago
PH =5 and now to prepare a buffer solution what will be the proportion of ethanoic acid and sodium ethanoate
Alik [6]

Answer:

CH3COONa : CH3COOH =  1.74 :  1  (required to prepare a buffer at PH = 5)

Explanation:

Given that :

PH = 5

Calculate proportions of ethanoic acid and Sodium ethanoate to prepare Buffer solution

solution :  

PH = Pka + Log ( CH3COONa / CH3COOH )

5.0 = 4.76 +  Log ( CH3COONa / CH3COOH )

∴  Log ( CH3COONa / CH3COOH ) = 0.24

( CH3COONa / CH3COOH )  = 1.74

Therefore : CH3COONa : CH3COOH

                         1.74          :      1

4 0
3 years ago
A fixed quantity of gas at 21 °c exhibits a pressure of 752 torr and occupies a volume of 5.12 l. (a) calculate the volume the g
mariarad [96]
A. PV=constant
752 torr = 0.989 atm
(0.989 atm)(4.38 L) = (1.88 atm)V
V = 2.30 L

B. T/V = constant
(294 K)/(4.38 L) = (448 K)/V
V = 6.67 L


Hoped this helped ( I believe it's right, sorry if it's not )
7 0
3 years ago
Read 2 more answers
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