Recent questions in Chemistry

Question

Choose which of the following statements are FALSE. a. One can calculate the cell potential for a reaction by subtracting the reduction half potential of the cathode from the reduction half potential of

Luckyfool asked Dec 19, 2024

by Luckyfool

7.8k points

1 answer

0 votes

82.2k views

How many phosphorus atoms are there in 4 molecules of PH3

Ramppy Dumppy asked Dec 19, 2024

by Ramppy Dumppy

7.7k points

1 answer

0 votes

135k views

Which gas would cause the least damage when used for leak checking? a) Hydrogen b) Nitrogen c) Methane d) Carbon Dioxide

Frankline asked Dec 19, 2024

by Frankline

7.5k points

1 answer

4 votes

118k views

For a particular reaction, ΔH=−111. 4 kJ/mol and ΔS=−25. 0 J/(mol·K). Required: Calculate ΔG for this reaction at 298 K. (in KJ).

Fiskra asked Dec 19, 2024

by Fiskra

6.9k points

1 answer

3 votes

209k views

Circle the sentences that are true. (A) Strong bases have a higher concentration of hydronium ions than pure water. (B) Strong bases dissociate almost completely in water. (C) Strong bases have a pH below

Simusid asked Dec 19, 2024

by Simusid

7.6k points

1 answer

1 vote

6.5k views

What happens to an acidic AA like glutamic acid when it is at physiological pH?

Sehael asked Dec 19, 2024

by Sehael

7.2k points

1 answer

1 vote

160k views

Why doesn't catalyst shift the equilibrium position?

Gabriel Kunkel asked Dec 19, 2024

by Gabriel Kunkel

8.7k points

2 answers

4 votes

180k views

10 g of KClO3 is dissolved in 100 grams of water at 70 °C. How many more grams of potassium chlorate (KClO3) can be dissolved before a saturated solution is formed? A) 10 g B) 50 g C) 90 g D) 110 g

Danna asked Dec 19, 2024

by Danna

8.8k points

1 answer

1 vote

224k views

A total of 1.588 F of electricity ( 1 F=1 mol − ) was required to electrodeposit all of the Zn and Co from a solution of ZnSO and CoSO 4 . The mixture of Zn and Co that was deposited had a mass of 48.

Boghyon Hoffmann asked Dec 19, 2024

by Boghyon Hoffmann

8.1k points

2 answers

0 votes

65.4k views

An atom with 2 protons and 4 neutrons is an A. Positive atom B. Neutral atom C. Negative atom

KevinD asked Dec 19, 2024

by KevinD

8.2k points

1 answer

2 votes

162k views

Is smashing a piece of candy into a powder a physical or chemical change? A) Physical B) Chemical

Wengseng asked Dec 19, 2024

by Wengseng

8.9k points

1 answer

1 vote

208k views

What is the molarity of a solution prepared by dissolving 120.0 g of NaOH in sufficient water to make a solution with a total volume of 9.60 liters?

Speck asked Dec 19, 2024

by Speck

8.0k points

1 answer

3 votes

102k views

A group of students decided to test some parameters of gases using a balloon. The students filled two balloons to the same volume. One balloon was placed in a freezer and the other was left at room temperature.

Bentedder asked Dec 19, 2024

by Bentedder

8.2k points

1 answer

0 votes

200k views

Which of the following steps is required after biological processes have broken down organic material in wastewater? 1) Water is placed in an aeration basin to increase oxygen. 2) Primary clarifiers separate

Rens Tillmann asked Dec 19, 2024

by Rens Tillmann

8.6k points

1 answer

1 vote

198k views

What is the mobile, stationary, retention factor in paper chromatography

Robert Prine asked Dec 19, 2024

by Robert Prine

7.7k points

1 answer

3 votes

103k views

Small quantities of hydrogen can be prepared by the addition of hydrochloric acid to zinc. A sample of 195ml of hydrogen was collected over water at 25°C and 753mmHg. What mass of hydrogen was collected?

Margrit asked Dec 19, 2024

by Margrit

8.0k points

1 answer

5 votes

26.6k views

8.0 mol AgNO3 reacts with 5.0 mol Zn in a single replacement reaction. 2AgNO3 + Zn → 2Ag + Zn(NO3)2 How many moles of Ag form from 5.0 mol Zn? [?] mol Ag

Jonke asked Dec 19, 2024

by Jonke

7.6k points

1 answer

5 votes

98.8k views

In which flask do the molecules have the greatest average speed?

Elizabethmeyer asked Dec 19, 2024

by Elizabethmeyer

8.5k points

1 answer

1 vote

72.2k views

A cake recipe calls for 170.0 ML of buttermilk. How many cups is this? SHOW WORK

Nunchy asked Dec 19, 2024

by Nunchy

8.2k points

1 answer

3 votes

22.1k views

A student is using a calorimeter to determine the specific heat of a metallic sample. She measures out 135.7 grams of her metal and heats it to 81.7 degrees Celsius. Then, she puts the sample into a calorimeter

Matiasf asked Dec 19, 2024

by Matiasf

8.4k points

1 answer

2 votes

76.3k views

Page:

« prev
1
...
106
107
108
109
110
111
112
...
1000
...
next »

Ask a Question

Recent questions in Chemistry

Other Questions