Recent questions in Chemistry

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EnglishAdam asked Oct 6, 2024

by EnglishAdam

8.2k points

1 answer

4 votes

39.3k views

What volume of a 0.540 M NaOH solution contains 12.5 g of NaOH? 0.169 L 5.92 L 0 0579 1.73 L 0 718L

Rhywden asked Oct 6, 2024

by Rhywden

7.7k points

2 answers

0 votes

113k views

HCl(50ml) + NaOH(50ml) --> NaCl+H2O Calculate the value of heat released (Q = mcT) and the Delta H Time | Temperature 0s 22C 10s 27C 20s 29C 30s 30C

Bendecko asked Oct 6, 2024

by Bendecko

8.5k points

1 answer

3 votes

47.0k views

Which is the most common covalent bond between the side chains of the amino acids that contribute to stabilizing the tertiary structure of a protein?

Eaton asked Oct 6, 2024

by Eaton

9.2k points

1 answer

5 votes

69.9k views

Magnesium nitride and water react to produce a precipitate of magnesium hydroxide and ammonia gas, MON,+ 6H,0 - 3 Mg(OH), + 2 NH, How much magnesium nitride is needed to produce 87 g of the precipitate

Joel Truher asked Oct 6, 2024

by Joel Truher

8.5k points

1 answer

2 votes

220k views

Using the standard enthalpy of formation data in Appendix G, determine which bond is stronger: the P–Cl bond in PCl₃(g) or in PCl₅(g)?

Stidmatt asked Oct 6, 2024

by Stidmatt

8.0k points

1 answer

2 votes

66.4k views

How many subsets does an n-element set have? Provide a combinatorial proof. a) 2ⁿ b) n² c) n! d) 2×n

Kmn asked Oct 6, 2024

by Kmn

8.9k points

1 answer

3 votes

136k views

I wrote out the calculations for the first one but I need help!!!!!!!

ChipJust asked Oct 6, 2024

by ChipJust

8.4k points

1 answer

1 vote

179k views

There is 43 μg of calcium in a total volume of 89 ml. The concentration of calcium is ___________. a) 0.483 μg/ml b) 0.966 μg/ml c) 1.5 μg/ml d) 2.05 μg/ml

Quba asked Oct 6, 2024

by Quba

8.0k points

1 answer

4 votes

191k views

How many oxygen atoms are there in 4.00 g of sodium dichromate, Na₂Cr₂O₇? A. 6.44 x 10²² oxygen atoms B. 9.19 10²¹ oxygen atoms C. 0.107 oxygen atoms D. 1.31 10²¹ oxygen atoms

Quarkonia asked Oct 6, 2024

by Quarkonia

8.0k points

1 answer

0 votes

40.5k views

Will 9-fluorenone will be more soluble in methylene chloride (a more non-polar organic solvent) or water (a very polar solvent)?

Ksh asked Oct 6, 2024

by Ksh

7.8k points

1 answer

2 votes

23.6k views

The atomic number is 5, it has 5 neutrons and no charge. What element is it? a. Hydrogen b. Helium c. Boron d. Carbon

Eric Thomas asked Oct 6, 2024

by Eric Thomas

8.7k points

1 answer

2 votes

190k views

What ir peaks are present in 3-nitrobenzoic acid

Thaddeus Albers asked Oct 6, 2024

by Thaddeus Albers

7.7k points

1 answer

5 votes

109k views

Answer the following questions related to H2O. Substance ΔG°f at 298K(kJ/mol) H₂O(l) −237.2 H₂O(g) −228.4 Using the information in the table above, determine the value of ΔG° at 298K for the process represented

Will Palmer asked Oct 6, 2024

by Will Palmer

8.8k points

1 answer

3 votes

161k views

a) Why is it necessary to determine the heat capacity of the cup calorimeter? b) What formula are you going to use to calculate the heat capacity of the cup calorimeter? c) What is the unit of the heat

Alessandro Messori asked Oct 6, 2024

by Alessandro Messori

9.6k points

1 answer

4 votes

55.7k views

Simplify the expression shown: 3x + 2 - 3r + 7 + 5x What is the coefficient in the simplified expression? A) 5 B) 9 C) 3x D) 5x

Vitor Ramos asked Oct 6, 2024

by Vitor Ramos

7.6k points

1 answer

2 votes

54.7k views

To 225 mL of a 0.80M solution of KI, a student adds enough water to make 1.0 L of a more dilute KI solution. What is the molarity of the new solution

Nistix asked Oct 6, 2024

by Nistix

7.9k points

1 answer

2 votes

154k views

The chemicals that make up the body are divided into 2 major categories: _____ and _____. Option 1: Organic and Inorganic Option 2: Elemental and Molecular Option 3: Biological and Non-biological Option

Ray Garner asked Oct 6, 2024

by Ray Garner

8.2k points

1 answer

2 votes

60.7k views

Wich statements correctly describe the process of nuclear fusion?

DedObed asked Oct 6, 2024

by DedObed

8.1k points

1 answer

3 votes

32.5k views

When elements combine to form compounds: -their properties do not change. -their properties are completely random. -their properties change completely. -their properties are an average of all elements

Ronald Luc asked Oct 6, 2024

by Ronald Luc

8.6k points

1 answer

2 votes

205k views

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