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3 years ago

Hurry please need answers and get your 20pts Use the diagram to answer each question with yes or no.

Chemistry

2 answers:

Vadim26 [7]3 years ago

5 0

1 bulb b and c wouldn't shine if ac. if DC then yes. 2 a would shine and c wouldn't if DC if ac then yes

IRISSAK [1]3 years ago

4 0

Answer:

1. No

2.Yes

Explanation:

y'all don't want an explanation just the answer i'm doing the same thing you are rn.

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Xelga [282]

Answer:

0.498 kg

Explanation:

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3 years ago

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3 years ago

Read 2 more answers

I need help solving this for chemistry. Don’t know where to start:/

Juli2301 [7.4K]

1 electron has charge =1.602* 10⁻¹⁹ C
1 mole of electrons have 1.602* 10⁻¹⁹*6.02*10²³C = 9.64*10⁴ C/1mol

One ion Co²⁺ takes 2e⁻ to become Co⁰.
1 mol of Co²⁺ ions take 2 mole of e⁻ to become Co⁰, so
0.30 mol Co²⁺ ions take mole of 0.60 mol e⁻ to become Co⁰

9.64*10⁴(C/1mol) *0.60 (mol)≈ 5.8 *10⁴ Coulombs.
Correct answer is C

8 0

3 years ago

A 10 gram sample of iron reacts with oxygen to form 18.2 grams of ferric oxide. How many grams of oxygen reacted?

RoseWind [281]

Answer:

$\boxed {\boxed {\sf 8.2 \ grams}}$

Explanation:

According to the Law of Conservation of Mass, the mass of the products must equal the mass of the reactants.

mass products = mass reactants

In this problem, the reaction is:

$iron + oxygen = ferric \ oxygen$

The reactants are iron and oxygen. We know the mass of the iron sample is 10 grams.

The product is ferric oxide. The mass of the ferric oxide sample is 18.2 grams.

$10 \ g + oxygen=18.2 \ g$

We want to find how many grams of oxygen reacted. We have to get the oxygen by itself. 10 is being added to oxygen. The inverse of addition is subtraction. Subtract 10 from both sides of the equation.

$10 \ g - 10 \ g+ oxygen = 18.2 \ g - 10 \ g$

$oxygen= 18.2 \ g - 10 \ g$

$oxygen= 8.2 \ g \\$

<u>8.2 grams of oxygen </u>reacted with 10 grams of iron to form 18.2 grams of ferric oxide.

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3 years ago

31) give an example of one renewable and one non renewable resource. be sure to state which is renewable and which is nonrenewab

Yakvenalex [24]

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A non-renewable source can be like coal, trees, Gasoline (oil), and petroleum.

32) I don't know what you mean, sorry.

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3 years ago