Recent questions in Chemistry

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In the modern Periodic Table, elements are placed in increasing order of which characteristic? a) Atomic number b) Atomic mass c) Electronegativity d) Density

Silva asked Dec 28, 2024

by Silva

8.3k points

1 answer

2 votes

220k views

What is the information that you use to research your investigation relatable? how do you know?

Willian asked Dec 28, 2024

by Willian

7.6k points

1 answer

1 vote

194k views

What is the family of compounds with carbon-carbon double bonds called?

Cosmitar asked Dec 28, 2024

by Cosmitar

8.2k points

1 answer

2 votes

188k views

Stomata (prevents/allows) CO₂ to diffuse and can close to (prevents/allows) water loss. a) Prevents, Allows b) Allows, Prevents c) Prevents, Prevents d) Allows, Allows

Anjali A asked Dec 28, 2024

by Anjali A

8.7k points

1 answer

4 votes

28.7k views

How many grams of na2o are required to produce 160 grams of NaOH? Show your work Na2O+H2O->2NaOH

MartinDotNet asked Dec 28, 2024

by MartinDotNet

8.4k points

1 answer

3 votes

29.0k views

What is the gravitational potential energy (GPE) of the 2 kg bowling ball as it sits on top of the building 40 meters high? Use this formula: GPE=m(9.8m/s²)h Potential Energy (GPE) is measured in Joules

Montreal asked Dec 28, 2024

by Montreal

9.1k points

2 answers

4 votes

205k views

Despite their physical differences, the halogens in Group 7A are all highly reactive ___________. a) metals b) nonmetals c) metalloids d) noble gases

Jaspreet Jolly asked Dec 28, 2024

by Jaspreet Jolly

7.4k points

1 answer

4 votes

77.9k views

During which stage of Excitation-Contraction coupling does Ca²⁺ bind. A)2 B)6 C)3 D)5

Prashanth Sams asked Dec 28, 2024

by Prashanth Sams

8.7k points

1 answer

4 votes

156k views

How is conductance of an ion related to the type of channels in a membrane?

Callmepills asked Dec 28, 2024

by Callmepills

8.1k points

1 answer

5 votes

6.6k views

How many grams of KOH are needed to neutralize 12.5 ml of 0.16M HCl in stomach acid? a) 0.25 g b) 0.4 g c) 2.5 g d) 4.0 g

Nitesh Singh asked Dec 28, 2024

by Nitesh Singh

7.8k points

1 answer

1 vote

76.2k views

Special fossils called "index fossils" indicate to geologists the _____________________ in geological time.

Farcaller asked Dec 28, 2024

by Farcaller

7.8k points

1 answer

1 vote

83.0k views

What are the basic components to the chemistry of fire? 1) Oxygen, heat, and fuel 2) Carbon dioxide, water, and heat 3) Hydrogen, oxygen, and nitrogen 4) Methane, propane, and butane

Oliver Keyes asked Dec 28, 2024

by Oliver Keyes

8.5k points

1 answer

0 votes

84 views

chain-growth polymers are synthesized by radical polymerization of alkenes. the mechanism for a radical polymerization of alkenes is given below. polystyrene, also shown below, is polymeric chain made

Malior asked Dec 28, 2024

by Malior

8.2k points

1 answer

2 votes

131k views

List the two ways 2 water molecules can be added across an alkene in a syn addition manner

Luis Menjivar asked Dec 28, 2024

by Luis Menjivar

8.5k points

1 answer

4 votes

219k views

True or False CvO2 is a direct indicator for CO

Ayoub Omari asked Dec 28, 2024

by Ayoub Omari

8.1k points

1 answer

1 vote

92.7k views

Acrylonitrile and ethyl acetate have the same boiling point: 77.2ºC. In one to two sentences, explain what outcome you would expect if a mixture of these two substances were distilled.

Dragn asked Dec 28, 2024

by Dragn

8.2k points

1 answer

2 votes

138k views

A 0.12 kg, 50 cm long uniform bar has a small 0.055 kg mass attached to it. The system is balanced horizontally on a fulcrum. Where should the fulcrum be placed for the system to be in equilibrium? A)

Ersoy asked Dec 28, 2024

by Ersoy

8.1k points

1 answer

2 votes

11.7k views

Hydrogen peroxide spontaneously decomposes to yield water and oxygen. Balance this reaction. Options: a) 2, 2, 1 b) 2, 2, 2 c) 1, 1, 1 d) 1, 2, 1

Jathanasiou asked Dec 28, 2024

by Jathanasiou

8.1k points

1 answer

0 votes

82.3k views

Which of the following is/are acids? SELECT ALL THAT APPLY a b milk d coffee c soap orange juice

Chris Bye asked Dec 28, 2024

by Chris Bye

8.0k points

1 answer

1 vote

20.6k views

The cell potential may change if the temperature changes, or if the concentrations of the reactant and/or product ions change. These relationships are summarized by the equation shown. Q is the reaction

Gks asked Dec 28, 2024

by Gks

7.9k points

1 answer

3 votes

118k views

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