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r-ruslan [8.4K]
2 years ago
6

Ocean tides on earth MOST influenced by gravity from the __

Chemistry
1 answer:
Ivahew [28]2 years ago
8 0

Answer:

moon

Explanation:

the moon's gravitational pull generates tidal force which affects earth's tides

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What is the mass, in grams, 200mL of liquid with a density of 1.4g/mL
Tcecarenko [31]

The mass of the liquid is 280 g.

Mass = 200 mL × (1.4 g/1 mL) = 280 g

6 0
3 years ago
You have 1 mole of a gas at STP. If you apply the ideal gas law what is the approximate volume of the gas?
goldfiish [28.3K]

Answer:

A) 22.4L

Explanation:

we know, ideal gas law states

PV=nRT

V=nRT/P

At STP,

T= 273.15K     P=1atm         R=0.082L.atm/mol/K          n=1 mole

V=(1*0.082*273.15)/ 1

V=22.4L

7 0
3 years ago
A 52.0-mL volume of 0.35 M CH3COOH (Ka=1.8×10−5) is titrated with 0.40 M NaOH. Calculate the pH after the addition of 23.0 mL of
Georgia [21]

NaOH reacts with CH3COOH in 1:1 molar ratio to produce CH3COONa 

NaOH + CH3COOH → CH3COONa + H2O 

Mol CH3COOH in 52.0mL of 0.35M solution = 52.0/1000*0.35 = 0.0182 mol CH3COOH 

Mol NaOH in 19.0mL of 0.40M solution = 19.0/1000*0.40 = 0.0076 mol NaOH 

These will react to produce 0.0076 mol CH3COONa and there will be 0.0182 - 0.0076 = 0.0106 mol CH3COOH remaining in solution unreacted . Total volume of solution = 52.0+19.0 = 71mL or 0.071L 

Molarity of CH3COOH = 0.0106/0.071 = 0.1493M 

CH3COONa = 0.0076 / 0.071 = 0.1070M 

pKa acetic acid = - log Ka = -log 1.8*10^-5 = 4.74. 

pH using Henderson - Hasselbalch equation: 

pH = pKa + log ([salt]/[acid]) 

pH = 4.74 + log ( 0.1070/0.1493) 

pH = 4.74 + log 0.717 

pH = 4.74 + (-0.14) 

pH = 4.60.

7 0
3 years ago
What does it mean for a reaction to release energy?.
8090 [49]

Answer:

exothermic

Explanation:

4 0
2 years ago
Read 2 more answers
Please help me match these to the boxes
mamaluj [8]

Answer:

answers from left to right:

decomposition,decomposition,synthesis,replacement,synthesis,replacement

Explanation:

6 0
3 years ago
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