Recent questions in Chemistry

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Which meaterial had the largest change in final temp when 250j of energy were added? Cooper glass silver or wood

Alexandru Mincu asked Dec 17, 2024

by Alexandru Mincu

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1 answer

2 votes

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How do we know when a chemical reaction had occurred?

Noah Martin asked Dec 17, 2024

by Noah Martin

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1 answer

1 vote

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Which statement is true for a 0.10M solution of HCl ? a. [H₃O⁺]ₑq=0.10M b. [H₃O⁺]ₑq<0.10M c. [H₃O⁺]ₑq>0.10M

NiallD asked Dec 17, 2024

by NiallD

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3 votes

37.0k views

The correct order of coefficients when the following reaction is balanced is: FeS + O2 → Fe2O3 + SO2

Jonas Kaufmann asked Dec 17, 2024

by Jonas Kaufmann

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1 answer

4 votes

143k views

What mass of lead(II) chloride will be produced when 25.0 mL of 0.562M RbCl reacts with 20.0 mL of 0.407 M Pb(NO3)2 by the following reaction? Pb(NO3)2 (aq) + 2 RbCl (aq) → 2 RbNO3 (aq) + PbCl2 (s)

Ihorko asked Dec 17, 2024

by Ihorko

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1 answer

2 votes

214k views

The chemical equation below shows the reaction between carbon dioxide (CO₂) and lithium hydroxide (LiOH). CO₂ + 2LiOH ---> Li₂CO₃ + H₂O The molar mass CO₂ is 44.01 g/mol. How many moles of LiOH are needed

Fredrik Kalseth asked Dec 17, 2024

by Fredrik Kalseth

7.6k points

1 answer

2 votes

148k views

The picture shows the main process that occurs in stars. What does the yellow star in the picture represent? Question 9 options: A. The energy released by fusion. B. The energy released by fission C. The

Grant Fritchey asked Dec 17, 2024

by Grant Fritchey

8.5k points

1 answer

2 votes

199k views

You should refrigerate which specimen before transportation? A. Lactic Acid B. Cryofibrinogen C. Bilirubin D. Cold Agglutinins

Jeff Bezos asked Dec 17, 2024

by Jeff Bezos

8.7k points

1 answer

3 votes

210k views

Identify the base in the following neutralization reaction: (Use this key to select your answer: Reactant 1+ Reactant 2 → Product 1 + Product 2): Mg(OH)2(aq) + HNO3(aq) → Mg(NO3)2 + H₂O Product 1 Reactant

Shibli asked Dec 17, 2024

by Shibli

7.9k points

2 answers

1 vote

67.9k views

What is the value of current solubility product

Nervosol asked Dec 17, 2024

by Nervosol

8.5k points

1 answer

0 votes

140k views

An aqueous antifreeze solution is 40.0% ethylene glycol (c2h6o2) by mass. the density of the solution is 1.05g/cm3. what is the molarity (m), molality (m) and mole fraction of the ethylene glycol?

Oleksiy Chechel asked Dec 17, 2024

by Oleksiy Chechel

8.3k points

1 answer

3 votes

166k views

PLEASE HELP ME QUICK RIGHT ANSWER ONLY WILL MARK BRAINELST IF CORRECT 30 POINTS A graduated cylinder is filled to 10 ml with water. a small piece of rock is placed into the cylinder displacing the water

Aamir Shah asked Dec 17, 2024

by Aamir Shah

8.0k points

2 answers

1 vote

102k views

The EPA regulates the presence of nitrates and nitrites in food because A: they produce nitrogen in the blood, causing a condition similar to the bends deep sea divers can suffer from. B: as with ammonium

JoshOfAllTrades asked Dec 17, 2024

by JoshOfAllTrades

8.2k points

1 answer

3 votes

3.3k views

For each group, identify where they might be found and any impacts they have on their environments. a) Hydrogen oxidizers: Found in hydrothermal vents, impact geothermal ecosystems. b) Sulfur oxidizers:

AaronMK asked Dec 17, 2024

by AaronMK

8.6k points

1 answer

5 votes

21.7k views

∼S ⊃ ∼F F --------- S a. MP—valid. b. DS—invalid. c. DA—invalid. d. MT—valid. e. DS—valid.

Andrew Carl asked Dec 17, 2024

by Andrew Carl

8.8k points

1 answer

1 vote

95.9k views

Which compounds constitutes 50% of all NPN?

Tsf asked Dec 17, 2024

by Tsf

7.5k points

1 answer

3 votes

73.3k views

What are clouds made up of ? .-.

Superoryco asked Dec 17, 2024

by Superoryco

8.9k points

1 answer

0 votes

77.0k views

Define hypertension and explain one lifestyle choice that may lead to it

Jegadeesh asked Dec 17, 2024

by Jegadeesh

8.1k points

1 answer

4 votes

10.2k views

A mass weighing 14 pounds stretches a spring 2 feet. What is the spring constant of the spring?

Anakkin asked Dec 17, 2024

by Anakkin

7.6k points

1 answer

3 votes

57.2k views

How can you get pure water from impure water ?

SangminKim asked Dec 17, 2024

by SangminKim

7.6k points

1 answer

5 votes

14.3k views

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