Recent questions in Chemistry

Question

When observing/measuring the structures (abxey) in part b of the procedure, were you able to confirm that lone pair orbitals require more space than bonding pair orbitals? In the structures with five domains,

MouseWanted asked Oct 3, 2024

by MouseWanted

9.2k points

1 answer

0 votes

215k views

A 0.48 molar solution of a monoprotic acid (HA) in water reaches equilibrium at a concentration of 0.36 M. What is Ka for this acid? Please enter your answer rounded to two significant figures. Step by

Olivier C asked Oct 3, 2024

by Olivier C

7.9k points

1 answer

4 votes

193k views

When equal molar amounts of HCl and HOCl are dissolved separately in equal amounts of water, the solution of HCl freezes at a lower temperature. Which compound has the larger equilibrium constant for acid

Petr Matousu asked Oct 3, 2024

by Petr Matousu

7.9k points

1 answer

4 votes

52.3k views

Write the balanced chemical equations for the neutralization reactions between the listed acid and base. (remember, acids and bases react to form water and a type of salt): A. HI and NaOH B. H2CO3 and

Mattmcmanus asked Oct 3, 2024

by Mattmcmanus

8.3k points

1 answer

0 votes

12.0k views

Now assume you wish to make a buffer at the same pH, using the same substances, but want the total phosphate molarity ([HPO₄₂−]+[H₂PO₄−]) to equal 0.25 M. What concentration of the KH₂PO₄would be required?

Sumbul asked Oct 3, 2024

by Sumbul

7.8k points

1 answer

4 votes

146k views

What is the chemical symbol for manganese? -Na -Mn -Hg -Mg

David Marble asked Oct 3, 2024

by David Marble

7.8k points

1 answer

2 votes

222k views

The element Mg consists of three isotopes which are 24Mg, 25Mg, and 26Mg. The relative atomic mass of Mg is 24.3. (a) Which is the most abundant isotope of Mg? (a) 24Mg (b) 25Mg (c) 26Mg (d) none of the

JRPete asked Oct 3, 2024

by JRPete

8.9k points

1 answer

5 votes

76.9k views

What are the vertical (1) columns in the periodic table A. Block elements B. Groups or Families called? -C. Grids D. Periods

Jasilva asked Oct 3, 2024

by Jasilva

8.3k points

1 answer

4 votes

170k views

A 1.294-g sample of a metal carbonate (MCO₃) is reacted with 500 mL of a 0.100 M HCl solution. The excess HCl acid is then neutralized by 32.80 mL of 0.588 M NaOH. Identify M.

David Jay Brady asked Oct 3, 2024

by David Jay Brady

8.5k points

1 answer

0 votes

146k views

If you start with 10.0 grams of aluminum hydroxide, how many grams of water will be produced?

Theron asked Oct 3, 2024

by Theron

8.0k points

1 answer

2 votes

140k views

To make up 100mL of 2% milk, how many grams of milk powder do you need A) 1 g B) 2 g C) 4 g D) 20 g

Ajberry asked Oct 3, 2024

by Ajberry

9.0k points

1 answer

0 votes

134k views

What is the boiling/condensation point of water in Kelvin? a) 273 K b) 373 K c) 100 K d) 0 K

Sarima asked Oct 3, 2024

by Sarima

8.6k points

1 answer

3 votes

134k views

Which of the following is the BEST index of oxygen transport a- PaO2 b- PAO2 c- CaO2 d- SaO2

Maliger asked Oct 3, 2024

by Maliger

7.7k points

1 answer

4 votes

201k views

The windows are the same size and design. Why is this not an ideal controlled investigation?

Deses asked Oct 3, 2024

by Deses

8.5k points

1 answer

2 votes

128k views

Determine the Binding Energy per Nucleon (BE/A) for (¹²C), the most abundant carbon isotope. a) 7.6 MeV b) 8.4 MeV c) 9.2 MeV d) 10.1 MeV

Cecilia Chan asked Oct 3, 2024

by Cecilia Chan

7.6k points

1 answer

0 votes

120k views

Which statement in Dalton’s atomic theory is supported by the law of conservation of mass? a. Atoms of different elements combine in simple whole-number ratios. b. Atoms are indivisible and indestructible.

Rlarcombe asked Oct 3, 2024

by Rlarcombe

7.2k points

1 answer

5 votes

30.1k views

How many liters of fluorine gas can be produced when 0.67 L of HF reacts with excess 02?

J David Smith asked Oct 3, 2024

by J David Smith

8.2k points

1 answer

1 vote

123k views

Rectangle JKLM is shown. Which rectangle is a dilation of Rectangle JKLM with a scale factor of 2? A. Rectangle J'K'L'M' B. Rectangle J'K'LM C. Rectangle J'KL'M' D. Rectangle JK'L'M

Aamitarya asked Oct 3, 2024

by Aamitarya

8.1k points

1 answer

1 vote

182k views

What does water undergo when it turns to gas from a liquid on the surface of a sidewalk? (a) Evaporation (b) Freezing (c) Sublimation (d) Condensation

Doug Johnston asked Oct 3, 2024

by Doug Johnston

7.9k points

1 answer

4 votes

73.6k views

............ is an electrolyte, as is any soluble ionic compound. -Sodium chloride -sugar -glucose -alcohol

Torsten Walter asked Oct 3, 2024

by Torsten Walter

8.4k points

2 answers

4 votes

86.3k views

Page:

« prev
1
...
950
951
952
953
954
955
956
...
1000
...
next »

Ask a Question

Recent questions in Chemistry

Other Questions