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3 years ago

What does an increase of 1 pH number represent?

Chemistry

2 answers:

Gennadij [26K]3 years ago

5 0

Answer: B

Explanation:

zepelin [54]3 years ago

3 0

Answer:

Explanation:

493x

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Oxygen is produced at the positive electrode

abruzzese [7]

Answer:

See Explanation

Explanation:

In electrolysis, a solution called the electrolyte is decomposed by the passage of direct current through it.

The points through which current enters and leaves the electrolyte are called electrodes. In electrolysis, oxidation occurs at the anode and reduction occurs at the cathode.

In the electrolysis of water; at the anode oxygen is produced as follows;

4OH^-(aq) -----> 2H2O(l) + O2(g) + 4e

5 0

3 years ago

What is a chemical test to distinguish between the liquids hexane and hexene

WINSTONCH [101]

Hexane is alkane and hexene is alkene.

They can be distinguish by bromine test.

Hexane being a saturated hydrocarbon does not decolourizes Br2 in CCl4 and hexene being unsaturated decolourizes Br2 in CCl4.

Reaction : CH3CH2CH2CH2CH2=CH2 + Br2 in CCl4 ------> CH3CH2CH2CH2CH2(Br)CH2Br ( colourless)

Read more on Brainly.in - https://brainly.in/question/2820606#readmore

6 0

4 years ago

How many electrons would you expect to find around an atom of scandium?

Arlecino [84]

Scandium Z= 21 has an electronic configuration of 1s²2s²2p⁶3s²3p⁶3d¹4s².
This shows that Scandium has 21 electrons with three outermost or valency electrons. It is a d-block elements whose valence electrons are equal to their group number, which is equal to the number of electrons in the valence shell.

4 0

4 years ago

20 grams of ethane (C2H6) in a 15 L container has a pressure of 1.3 bar. What is the temperature, in oC

Zepler [3.9K]

Answer:

The temperature is 42.5 °C

Explanation:

We apply the Law of Ideal Gases to solve this:

P . V = n . R . T

First, we convert the bar into atm, so we make a rule of three.

1.013 bar is 1 atm

1.3 bar is (1.3 . 1) /1.013 = 1.28 atm

1.28atm . 15L = n . 0.082 . T

We must convert the mass to moles ( mass / molar mass)

20 g / 30 g / mol = 0.666 moles

1.28atm . 15L = 0.666 mol . 0.082 . T

(1.28 atm . 15L) / (0.666 mol . 0.082) = T

315.5 K = T

As this is absolute temperature we must convert to °C

315.5 K - 273= 42.5 °C

3 0

3 years ago

Read 2 more answers

A Canadian dime weighs 1.75g and has a thickness of 1.22mm. A Canadian quarter weighs 4.4g and has a thickness of 1.58mm. You ha

balu736 [363]

The mass of the total number of coins is 1405 g.

Since the thickness of each dime is 1.22 mm and we have each pile being 61.0 mm tall, we need to determine the number of dimes in each pile by dividing the height of the pile by the thickness of each dime.

so, number of dimes in each pile = height of each pile/thickness of each dime = 61.0 mm/1.22 mm = 50 dimes.

Since we have 6 piles, the total number of dimes in all the piles is 6 piles × 50 dimes/pile = 300 dimes.

So, there are 300 dimes in the 6 piles.

Since each dime weighs 1.75 g, 300 dimes will weigh 1.75 g/dime × 300 dimes = 525 g.

In the pile of quarters, we have $ 50 worth of quarters.

Since each quarter = $ 0.25, the number of quarters in that pile is total worth of quarter/value of one quarter = $ 50/$ 0.25 = 200 quarters.

Since each quarter weighs 4.4 g, 200 quarters will weigh 4.4 g/quarter × 200 quarters = 880 g

So, the mass of the total number of coins = total mass of dimes + total mass of quarters = 525 g + 880 g = 1405 g

So, the mass of the total number of coins is 1405 g.

Learn more about mass of coin here:

brainly.com/question/19194652

5 0

3 years ago