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How many Na2SO4 formula units are in 1.75 moles of Na2SO4

Roizpi asked Oct 14, 2024

by Roizpi

8.1k points

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The thermal stability of Group 2 hydroxides increases down the group due to: a) Decreasing atomic size b) Increasing ionic size c) Decreasing solubility d) Increasing lattice energy

Alexander Kleinhans asked Oct 14, 2024

by Alexander Kleinhans

7.5k points

1 answer

4 votes

172k views

Choose all that are correct. A. Reduction is the gain of electrons. B. Oxidation and reduction reactions always occur simultaneously. C. Reduction is the loss of electrons. D. Oxidation is the loss of

Lawrence asked Oct 14, 2024

by Lawrence

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1 answer

4 votes

227k views

The exothermic reaction between liquid hydrazine ( N 2 H 4 ) (N 2 H 4 ) and liquid hydrogen peroxide ( H 2 O 2 ) (H 2 O 2 ) is used to fuel rockets. The products of this reaction are nitrogen gas

Reggoodwin asked Oct 14, 2024

by Reggoodwin

9.0k points

1 answer

3 votes

20.5k views

How do smart phones use waves to transfer energy and information? This infographic should summarizes wave transmission from cell phone to cell phone. Your infographic should: Demonstrate how a cell phone

Anka asked Oct 14, 2024

by Anka

8.2k points

1 answer

2 votes

123k views

Which of these elements contains four valence electrons? 1) Carbon 2) Oxygen 3) Nitrogen 4) Fluorine

HelloWorld asked Oct 14, 2024

by HelloWorld

8.8k points

1 answer

3 votes

39.5k views

Which of the following does NOT affect carbon monoxide emissions from a boiler? a. the amount of limestone injected into the furnace b. the amount of combustion air provided c. the time the fuel spends

Saurabh Tiwari asked Oct 14, 2024

by Saurabh Tiwari

8.5k points

1 answer

0 votes

186k views

A girl skateboards with a kinetic energy of 2543.2 j. If the girl and skateboard have a total mass of 110kg, what is her speed?

Rajesh Ujade asked Oct 14, 2024

by Rajesh Ujade

8.1k points

2 answers

2 votes

113k views

An oxidizer added to hydrogen peroxide to increase its chemical action or lifting power is an: a) Shampoo b) Activator c) Developer d) Conditioner

Xszym asked Oct 14, 2024

by Xszym

8.1k points

1 answer

2 votes

22.3k views

two cpds have the same composition; 85.62 persent C. 14.38 persent of H. A/ OPTAIN THE EMPERICAL formula correspondig to this composition. B/one of cpds has amolecular mass of 28.03 amu; the other, of

Peck asked Oct 14, 2024

by Peck

8.2k points

1 answer

1 vote

162k views

How many electrons in an atom can have the quantum numbers n = 3, l = 2? Option 1: 1 Option 2: 2 Option 3: 5 Option 4: 10

Cmyr asked Oct 14, 2024

by Cmyr

8.7k points

1 answer

4 votes

2.7k views

Which of the following is NOT an example of how biotic factors interact with abiotic factors in an ecosystem? A lion preys on a herd of gazelle. ⊝ Plants remove carbon dioxide from the air and add oxygen.

Lpaseen asked Oct 14, 2024

by Lpaseen

8.6k points

1 answer

3 votes

90.2k views

Identify which of the following is correct about the below given reaction. 2 Cl₂ (g) + Si(s) → SiCl₄(l)

Adam Right asked Oct 14, 2024

by Adam Right

7.7k points

1 answer

1 vote

214k views

I fill a graduated cylinder with 124.6 mL of water. When I transfer this water to a 400 mL beaker, it comes up to "146.9. ml" on the beaker's scale. The percent error in this beaker is: a. 15.2 percent

Marekpw asked Oct 14, 2024

by Marekpw

7.2k points

1 answer

5 votes

140k views

A neutral atom has 17 protons and a mass number of 37. The name of the atom is _____ and each atom has _____ electrons. This particular isotope of the atom has _____ neutrons. A. Chlorine; 17 electrons;

Alex Choroshin asked Oct 14, 2024

by Alex Choroshin

8.4k points

1 answer

3 votes

82.5k views

A sample of hydrogen combusts, producing 1.00 kg of H2O (l). How many kJ of heat were released in the process

Kidloco asked Oct 14, 2024

by Kidloco

8.3k points

2 answers

1 vote

165k views

What is the concentration of the unknown h3po4 h 3 p o 4 solution?

Ronze asked Oct 14, 2024

by Ronze

8.0k points

1 answer

1 vote

106k views

Select the major product that would result from the reaction: CH3CH2CH CH2 HBr CHjCHBrCH2CH3 CHaICHBr)2CH3 CH&CH2CH2CH2Br CH2CH2CH2CH3

Dnhyde asked Oct 14, 2024

by Dnhyde

8.2k points

1 answer

0 votes

138k views

Which test do we use to test reducing sugar? 1) Benedict's test 2) Iodine test 3) Biuret test 4) Barfoed's test

Dmcer asked Oct 14, 2024

by Dmcer

8.3k points

1 answer

1 vote

161k views

The reusable booster rockets of the U.S. space shuttle uses a mixture of Aluminium and Ammonium perchlorate for fuel. A possible equation for this reaction is: 3Al(s)+3NH₄ClO₄(s)→Al₂O₃ (s)+AlCl₃ (s)+3NO(g)+6H₂O(g)

Borja Tarraso asked Oct 14, 2024

by Borja Tarraso

8.1k points

1 answer

3 votes

134k views

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