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2 years ago

Help ASAAPPPPPPPPPP!!!!

Chemistry

1 answer:

Verdich [7]2 years ago

6 0

Third choice is correct.

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Need to complete the chart

GalinKa [24]

Answer:

Row 1

$[H^+]=1.8\times 10^{-6}M$

$pH=-\log[H^+]=-\log[1.8\times 10^{-6}]=5.7$

pOh=14-pH=14-5.7=8.3

$pOH=-\log[OH^-]$

$[OH^-]=0.5\times 10^{-8}M$

Hence, acidic

Row 2

$[OH^-]=3.6\times 10^{-10}M$

$pOH=-\log[OH^-]=-\log[3.6\times 10^{-10}]=9.4$

pH=14-pOH=14 - 9.4 = 4.6

$pH=-\log[H^+]$

$[H^+]=2.6\times 10^{-5}M$

Hence, acidic

Row 3

pH = 8.15

$[H^+]=0.7\times 10^{-8}M$

pOH=14-pH=14 - 8.15 = 5.8

$pOH=-\log[OH^-]$

$[OH^-]=1.5\times 10^{-6}M$

Hence, basic

Row 4

pOH = 5.70

$[OH^-]=1.8\times 10^{-6}M$

pH=14-pOH=14 - 5.70 = 8.3

$pH=-\log[H^+]$

$[H^+]=0.5\times 10^{-8}M$

Hence, basic

3 0

3 years ago

Can somebody help me with these 2 things. I honestly just need the acids and bases for both

pochemuha

Answer:

The Bronsted-Lowery acid is H2O

The Bronsted-Lowery base is CO3

The conjugate acid is HCO3

The conjugate base is OH

Explanation:

Molocules that lose a hydrogen in a reaction act as an acid, and those that recieve one act as a base.

8 0

2 years ago

A cylindrical tube 13.5 cm high and 4.5 cm in diameter is used to collect blood samples. How many cubic decimeters (dm3) of bloo

Aleks [24]

Answer:

The cylindrical tube can hold 0.215 cubic decimeters of blood.

Explanation:

Diameter of the cylindrical tube = d = 4.5 cm

r = d/2 ,r = 2.25 cm

Height of the cylindrical tube = h = 13.5 cm

Volume of the cylinder = V = $\pi r^2h$

$V=3.14\times (2.25 cm)^2\times 13.5 cm$

$V=214.6 cm^3=0.2146 dm^3\approx 0.215 dm^3$

$1 cm^3=0.001 dm^3$

The cylindrical tube can hold 0.215 cubic decimeters of blood.

3 0

3 years ago

Why does land heat up more faster than water?

Agata [3.3K]

if you go to a desert and your in the middle of nowhere you get thirsty and have no water and need to find water to drink so the sun is the reason it heats faster than water in the desert

5 0

2 years ago

Read 2 more answers

Determine the volume in liters occupied by 0.030 moles of a gas at STP

vitfil [10]

Answer:

.67 L

Explanation:

.030 mol x 22.4 L / 1 mol = .67 L

22.4 was used because that is what 1 mol equals for a gas at stp.

7 0

2 years ago

Read 2 more answers