Recent questions in Chemistry

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A recent article in an educational research journal reports a correlation of +0.8+0.8 between math achievement and overall math aptitude. It also reports a correlation of −0.8−0.8 between math achievement

Van asked Oct 15, 2024

by Van

8.5k points

1 answer

5 votes

100k views

Classify each substance as an element, a compound, a homogeneous mixture, or a heterogeneous mixture. 1) Element 2) Compound 3) Homogeneous mixture 4) Heterogeneous mixture

Yago Riveiro asked Oct 15, 2024

by Yago Riveiro

7.6k points

1 answer

3 votes

222k views

Which of the following structures would you expect to find in an aqueous environment? A) Alpha helix B) Beta sheet C) Tertiary structure D) Quaternary structure

Alexey Alexandrov asked Oct 15, 2024

by Alexey Alexandrov

8.5k points

1 answer

5 votes

77.9k views

Help please I don’t understand ohmygod

Jkoshy asked Oct 15, 2024

by Jkoshy

8.3k points

1 answer

4 votes

54.0k views

2D.13 Place the following molecules or ions in order of decreasing bond length: (a) the CO bond in CO, , (b) the SO bond in , , (c) the CN bond in HCN, , . Explain your reasoning.

Kenial asked Oct 15, 2024

by Kenial

8.7k points

1 answer

4 votes

105k views

Describe how electrical energy is used in a printer pls help me ASAP

Jan Seevers asked Oct 15, 2024

by Jan Seevers

7.5k points

1 answer

2 votes

31.2k views

What atoms does Hydrogen interact with to create Hydrogen-Bond Intermolecular Forces?

Sope asked Oct 15, 2024

by Sope

8.8k points

1 answer

5 votes

42.2k views

Calculate the osmotic pressure of a solution formed by dissolving 50mg of asprin (C_{9}*H_{8}*O_{4}) in 0.250L of water at 25 deg * C(R = 0.082Latm / molK)

Nikhil Redij asked Oct 15, 2024

by Nikhil Redij

8.7k points

1 answer

3 votes

191k views

If 3.50 mol of Fe reacts with 3.00 mol of oxygen in the following reaction: 4 Fe(s) + 3 O₂(g) → 2 Fe₂O₃(s) Which of the following statements is correct? If 3.50 mol of Fe reacts with 3.00 mol of oxygen

Nicholas Harder asked Oct 15, 2024

by Nicholas Harder

8.3k points

1 answer

1 vote

42.9k views

Bonds where one charged atom gives one or more electrons to another is an _________________ bond. a. Ionic b. Covalent c. Hydrogen d. None of these

Otskimanot Sqilal asked Oct 15, 2024

by Otskimanot Sqilal

8.0k points

2 answers

5 votes

32.6k views

What is the pH of the following solution after adding 0.0060 mol of HCl to a 1 L buffer solution that is 0.312M diethylamine (aq) and 0.231M diethylammonium chloride ((C₂H₅)2NH₂Cl)(aq) ? a.4.45 b.6.87

Alon Amir asked Oct 15, 2024

by Alon Amir

8.0k points

1 answer

2 votes

121k views

The solubility of lead chromate (PbCrO4) is 4.5 x 10-5 g/L. Calculate the solubility product of this compound. a) 4.5×10 −5 b) 2.25×10 −5 c) 9.0×10 −10 d) 2.0×10 −10

Adjanaye asked Oct 15, 2024

by Adjanaye

8.3k points

1 answer

0 votes

22.0k views

Lead will react with hydrochloric acid to produce lead (II) chloride and hydrogen gas. How many moles of hydrochloric acid are needed to completely react with 4.0 mole of lead?

WillZ asked Oct 15, 2024

by WillZ

8.5k points

1 answer

4 votes

114k views

How many electrons do each element have in their outer shell in group 0?

Kiana asked Oct 15, 2024

by Kiana

8.3k points

1 answer

3 votes

80.2k views

A student performs an experiment to determine the density of their class ring. They determine the mass of the ring is 9.322 g and the volume to be 27.1 mL. What should they record as the numerical value

PauGNU asked Oct 15, 2024

by PauGNU

8.4k points

1 answer

0 votes

5.2k views

Calculate the partial pressure of each product and the total pressure in the 12.0 L vessel after ozone (O₃) reacts completely with nitrogen monoxide (NO), producing nitrogen dioxide (NO₂) and oxygen (O₂).

Ynnckcmprnl asked Oct 15, 2024

by Ynnckcmprnl

7.5k points

1 answer

0 votes

136k views

A 0.004M solution of Na₂SO₄ is isotonic with a 0.010M solution of glucose at same temperature. The apparent degree of dissociation of Na₂SO₄ is A. 25% B. 50% C. 75% D. 85%

Dbenham asked Oct 15, 2024

by Dbenham

7.5k points

1 answer

5 votes

94.0k views

57. MnO4¹ +SO₂ ⇒ Mn²+ + SO4²- 58. MnO4¹ + C₂04² Mn²+ + CO₂ 59. CrO4²- + C1¹- ⇒ Cr³+ + Cl₂ 60. Cr₂O7²- + S²- → Cr³+ + S Please help if you know Balancing Redox.

Yash Tewari asked Oct 15, 2024

by Yash Tewari

8.1k points

1 answer

2 votes

9.9k views

How many molecules does one need to make Hydrogen peroxide

Samanta asked Oct 15, 2024

by Samanta

8.3k points

1 answer

4 votes

120k views

Baking soda contains the functional group _______. Amino group Carboxyl group Hydroxyl group Bicarbonate group

Fannik asked Oct 15, 2024

by Fannik

8.0k points

1 answer

1 vote

129k views

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