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The wavelength of a certain line in the Paschen series is 1094.4 nm of the hydrogen atom. What is the value of n high for this line? a. 4 b. 5 c. 6 d. 7

Ghurdyl asked Dec 17, 2024

by Ghurdyl

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175k views

As concentration of a weak acid increases, the pH a. increases b. decrease c. remains constant

SharadxDutta asked Dec 17, 2024

by SharadxDutta

8.2k points

1 answer

2 votes

207k views

If pressure is 101.325 kPa, temperature is 300 K, and there are 2 moles of gas, what is the volume of the gas? Options: a) 50.6625 L b) 100.0 L c) 150.9938 L d) 200.0 L

Rasheedah asked Dec 17, 2024

by Rasheedah

8.1k points

1 answer

4 votes

62.7k views

Use the periodic table and your knowledge of atomic structure to match each element with the correct electron configuration.

Sam Purcell asked Dec 17, 2024

by Sam Purcell

7.5k points

1 answer

4 votes

185k views

Burning of carbon-based fuels can produce _______, an odorless gas that competes with oxygen for binding to hemoglobin

Seydazimov Nurbol asked Dec 17, 2024

by Seydazimov Nurbol

9.1k points

1 answer

1 vote

59.5k views

What is the role of gel concentration in determining range of separation?

Sajan Parikh asked Dec 17, 2024

by Sajan Parikh

8.2k points

1 answer

1 vote

21.1k views

3. Calculate the atomic mass of each of the following elements using your method from above. You must show your work for each calculation below the table. Test your answer using Nature's mix of isotopes

Alastair Irvine asked Dec 17, 2024

by Alastair Irvine

7.6k points

1 answer

5 votes

59.1k views

How many miles of at are contained in a 0.500 L tank at 155 degrees Celsius and 2.80?

Csaba asked Dec 17, 2024

by Csaba

7.2k points

1 answer

5 votes

221k views

Solids like salt and diamond have regular repeating molecular shape and are called ________________ solids. A. Amorphous B. Crystalline C. Isotropic D. Elastic

Jparthj asked Dec 17, 2024

by Jparthj

7.5k points

1 answer

3 votes

164k views

The difference between fusion and fission is that: (a) fusion always releases energy while fission always consumes it (b) fission always releases energy while fusion always consumes it (c) fission is the

Camlspotter asked Dec 17, 2024

by Camlspotter

7.7k points

1 answer

1 vote

50.8k views

Which particles have aproximately the same size and mass as each other? a.protons and electrons b.neutron and electrons c.protons and neutrons d.electrons, protons and neutrons.

VectorVictor asked Dec 17, 2024

by VectorVictor

8.3k points

2 answers

3 votes

155k views

An industrial chemist converts Zn(H₂O)₄²⁺ to the more stable Zn(H₃O)₄²⁺ by mixing 50.0 L of 0.0020 M Zn(H₂O)₄²⁺ and 25.0 L of 0.15 M NH₃. What is the final [Zn(H₂O)₄²⁺] at equilibrium? Kf of Zn(H₃O)₄ is

Samblg asked Dec 17, 2024

by Samblg

7.9k points

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2 votes

215k views

What is the volume of 15 moles of CO₂ at 50∘C and 800 torr?

Neil Kistner asked Dec 17, 2024

by Neil Kistner

7.5k points

1 answer

1 vote

149k views

Which of the following elements is most likely to form ions with a 2+ charge? A) P B) Li C) Ca D) O E) Cl

Anstue asked Dec 17, 2024

by Anstue

8.7k points

1 answer

1 vote

58.2k views

The following chemical reaction takes place in aqueous solution: CuCl 2 (aq)+2NaOH(aq)→Cu(OH) 2 (s)+2NaCl(aq) Write the net ionic equation for this reaction.

Kislingk asked Dec 17, 2024

by Kislingk

7.4k points

2 answers

0 votes

10.6k views

How many moles of oxygen are in 3.88 moles of triflic acid?

Dilettant asked Dec 17, 2024

by Dilettant

8.4k points

1 answer

3 votes

22.4k views

Valence electrons are electrons located in: A. The innermost shell/energy level of an atom B. The nucleus of an atom C. The outermost shell/energy level of an atom D. None of the above

Mike Izbicki asked Dec 17, 2024

by Mike Izbicki

8.5k points

1 answer

3 votes

77.0k views

Analysis of a compound containing lead and chlorine reveals that the compound is 59.37% lead. The molar mass of the compound is 349.0 g/n. What is the empirical formula and the molecular formula of this

Raymond Xie asked Dec 17, 2024

by Raymond Xie

8.5k points

1 answer

3 votes

12.9k views

there are two naturally occuring isotopoes of silver-107 and silver-109 what is the approximate ratio of isotopes in a naturally occuring sample of silver?

BOMEz asked Dec 17, 2024

by BOMEz

7.5k points

1 answer

5 votes

200k views

An electron in a calcium atom gains enough energy to move from the first shell to the second shell, the calcium atom becomes: A. A negative ion B. A positive ion C. An atom in an excited state D. An atom

ScootyPuff asked Dec 17, 2024

by ScootyPuff

8.0k points

1 answer

4 votes

148k views

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