Recent questions in Chemistry

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Calculate Reactions 1, 2 and 3 using standard entropy change. Need this asap.

ZeroTek asked Dec 23, 2024

by ZeroTek

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2 votes

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What is the empirical forμla of a compound composed of 25.3 g of potassium (K) and 5.18 g of oxygen (O)? Insert subscripts as needed. a) K2O b) KO c) K2O_2 d) KO_2

Ron Klein asked Dec 23, 2024

by Ron Klein

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1 answer

1 vote

29.0k views

Balancing Practice MgCl2 + Na2O →NaCl +MgO a) MgCl2 + Na2O → NaCl + MgO b) MgCl2 + Na2O → NaCl + MgO2 c) MgCl2 + Na2O → Na2Cl + MgO d) MgCl2 + Na2O → NaCl2 + MgO

Eshwar asked Dec 23, 2024

by Eshwar

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5 votes

120k views

How many grams of C6H12O6 are in 300 mL of .25 M solution?

Pampy asked Dec 23, 2024

by Pampy

7.9k points

1 answer

2 votes

234k views

Which one of the following is not true of metallic bonding? a. it gives rise to excellent electrical conductivity b. electrons are free to move throughout the structure c. the strength of metallic bonds

Imarktu asked Dec 23, 2024

by Imarktu

7.7k points

2 answers

2 votes

215k views

A glass container was initially charged with 1.70 moles of a gas sample at 4.00 atm and 21.7 °C. Some of the gas was released as the temperature was increased to 29.1 °C, so the final pressure in the container

Mohammed Alfateh asked Dec 23, 2024

by Mohammed Alfateh

7.5k points

1 answer

4 votes

233k views

What term is used to describe the substance that is totally consumed in a chemical reaction?

Kofifus asked Dec 23, 2024

by Kofifus

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1 answer

1 vote

188k views

What is the importance of alkali metals

Our Man In Bananas asked Dec 23, 2024

by Our Man In Bananas

7.2k points

1 answer

4 votes

64.5k views

How many moles are in 89.9 mg of Ca(OH)2 ? (Report to 4 decimal places, do not write in scientific notation)

Ajay Ohri asked Dec 23, 2024

by Ajay Ohri

7.8k points

1 answer

3 votes

73.6k views

20j. Write a series of equations to describe the decay chain from one particle to another

Yoeri asked Dec 23, 2024

by Yoeri

7.4k points

1 answer

3 votes

228k views

What two chemical groups are found at the end of either side of the fatty-acid carbon chain?

Gordon Smyth asked Dec 23, 2024

by Gordon Smyth

7.1k points

1 answer

3 votes

52.9k views

Write the correct formula for the following four compounds: sodium oxide, nitrogen trichloride, aluminum carbonate, and lead(II) hydroxide.

Fabrice NEYRET asked Dec 23, 2024

by Fabrice NEYRET

7.3k points

1 answer

5 votes

83.7k views

The number of moles in 4.5x10^23 atoms of oxygen is

Yuri Tsoglin asked Dec 23, 2024

by Yuri Tsoglin

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1 answer

3 votes

25.7k views

If Delta G initial = -125 kJ, calculate the value of the equilibrium constant at room temperature (298K).

Amree asked Dec 23, 2024

by Amree

7.5k points

1 answer

2 votes

44.7k views

What are three properties of covalent bonds and three properties of Ionic bonds?

EliuX asked Dec 23, 2024

by EliuX

7.4k points

1 answer

4 votes

51.3k views

Three 8−L flasks, fixed with pressure gauges and small valves, each contain 4 g of gas at 284 K. Flask A contains CH4, flask B contains He, and flask C contains H2. Rank the flask contents in terms of:

Seeya K asked Dec 23, 2024

by Seeya K

7.6k points

1 answer

5 votes

197k views

Calculate the molarity of 0.75 L of a solution containing 0.93 g of dissolved KCl. Use the calculations of 0.93 g of KCl / molar mass of KCl (from Periodic Table) = moles of KCl. Moles of KCl/0.75 L =

Amitdatta asked Dec 23, 2024

by Amitdatta

7.3k points

1 answer

4 votes

211k views

The rearrangement of methyl isonitrile 1(CH₃NC)₂ to acetonitrile 1CH₃CN₂ is a first-order reaction and has a rate constant of 5.11 ✕ 10⁻5 s⁻1 at 472 K. If the initial concentration of CH₃NC is 0.0340 M:

Supun Abesekara asked Dec 23, 2024

by Supun Abesekara

8.5k points

1 answer

0 votes

89.9k views

PLEASE HELP Consider the combustion for octane (C8H18), which is a primary component of gasoline. 2 C8H18 + 25 O2 -> 16 CO2 + 18 H2O HOW MANY MOLES OF CO2 are emitted into the atmosphere when 26.6 g C8H18

Tihamer asked Dec 23, 2024

by Tihamer

7.6k points

1 answer

2 votes

18.9k views

If I have 3.7 moles of MgSO4 and 4.8 moles of NH3 which one is the limiting reactant?

Dastagir asked Dec 23, 2024

by Dastagir

7.1k points

1 answer

4 votes

117k views

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