Recent questions in Chemistry

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A fictional element has two isotopes each making up 50% of the population. Isotope 1 has a mass of 80.0 amu. What is the mass of isotope 2? (a) 82.0 amu (b) 84.0 amu (c) 86.0 amu (d) 88.0 amu

Yury Bayda asked Oct 8, 2024

by Yury Bayda

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Ia 0.110 m solution of an enantiomerically pure chiral compound has an observed rotation of +0.24∘ in a 1‑dm sample container. the molar mass of the compound is 120.0g/mol. What is the specific rotation

Mobile Apps Expert asked Oct 8, 2024

by Mobile Apps Expert

7.7k points

1 answer

5 votes

116k views

B. Imagine that the food coloring is a type of atom. Based on your observations, how does the concept of Brownian motion help to explain what you observed?

Mohamed Rahouma asked Oct 8, 2024

by Mohamed Rahouma

8.1k points

1 answer

1 vote

227k views

bromine, Br₂ is a liquid at room temperature but boils (converts from a liquid into a gas) when warmed. what is the temperature (in k) in a 82.0 ml bulb that contains 0.217 g of Br₂ vapor at a pressure

Fred Pym asked Oct 8, 2024

by Fred Pym

8.7k points

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0 votes

109k views

What type of conformation is the 3D structure of the peptide backbone in?

CursedChico asked Oct 8, 2024

by CursedChico

7.8k points

1 answer

1 vote

109k views

Which of the following oxides is/are acidic? a) CO2 b) SO3 c) Na2O

IsabellaW asked Oct 8, 2024

by IsabellaW

7.9k points

1 answer

4 votes

131k views

If t1/2 of a second-order reaction is 1.0h. After what time, the amount will be 50% of the initial amount?

Tobixen asked Oct 8, 2024

by Tobixen

8.7k points

1 answer

4 votes

61.6k views

True or False: The vertical mixing rate in the stratosphere is larger than in the troposphere. Maricopa County (Arizona) is non-attainment for the Hazardous Air Pollutant benzene. A secondary NAAQS s

Daniel Stutzbach asked Oct 8, 2024

by Daniel Stutzbach

8.2k points

1 answer

0 votes

84.8k views

Explain how substances dissolve using the particle model.

Harlem asked Oct 8, 2024

by Harlem

7.4k points

1 answer

3 votes

90.8k views

5.4l of hexane (c₆h₁₄) at stp is burned in air. how many grams of carbon dioxide is formed? round your answer to two decimals.

Lene asked Oct 8, 2024

by Lene

8.1k points

1 answer

2 votes

64.5k views

True or False: Organic substances are always made from the same four elements including carbon, hydrogen, oxygen, and nitrogen. FALSE TRUE

Marco Ponti asked Oct 8, 2024

by Marco Ponti

7.8k points

2 answers

1 vote

59.2k views

4. Why is it important to balance a chemical equation?

Sanket Berde asked Oct 8, 2024

by Sanket Berde

8.4k points

1 answer

3 votes

78.5k views

Given the equation 3B + A D + C, you react 2 moles of B with 1 mole of A. Which of the following is true? Group of answer choices B is the limiting reactant because of its higher molar mass. B is the limiting

Yan Q asked Oct 8, 2024

by Yan Q

7.6k points

1 answer

5 votes

146k views

Atomic mass is a value that depends on the distribution of an element's isotopes in nature and the masses of those isotopes.

Marfalkov asked Oct 8, 2024

by Marfalkov

7.4k points

1 answer

1 vote

44.1k views

Active transport involves the movement of materials against a concentration gradient, from ______ concentration to ________ concentration (a) From high concentration to low concentration (b) From low concentration

James Andresakis asked Oct 8, 2024

by James Andresakis

8.3k points

1 answer

2 votes

146k views

Why do you think that the neutron was the last of the atom components to be discovered?

Giltsl asked Oct 8, 2024

by Giltsl

7.8k points

2 answers

0 votes

200k views

Explain how restoring habitats protects species and saves biodiversity. What is one limitation of this conservation method?

Mostafazh asked Oct 8, 2024

by Mostafazh

8.1k points

1 answer

2 votes

224k views

what electron-pair geometry does norepinephrine have and what is the molecular geometry? Why does Norepinephrine's molecule have it's shape?

Kupson asked Oct 8, 2024

by Kupson

7.6k points

1 answer

2 votes

77.8k views

The density of Changbcool is 15.75g/cmº. Convert that to kg/L. 1kg = 1000g. 1L=1000cm'Do not write units (it helps me grade faster).

Csath asked Oct 8, 2024

by Csath

7.6k points

1 answer

2 votes

16.1k views

In determining whether the parties consented to form an agency relationship, courts look to the parties’ subjective intent as definitive. A/True B/False?

Rich Armstrong asked Oct 8, 2024

by Rich Armstrong

8.1k points

1 answer

5 votes

127k views

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