Chemistry

All new and solved questions in Chemistry category

4 answers

A beaker containing a hot solution is transferred from a table toa bath of cool water. Which of the following parts of the systemexperiences

A beaker containing a hot solution is transferred from a table to a bath of cool water. Which of the following parts of the system experiences an increase in heat energy?...
4 answers

Please help me pls

Please help me pls [tex]Please help me plsssssssssssss[/tex]...
4 answers

4) Find the mass of a 4.2 x 10^3mole sample of potassium phosphate.

4) Find the mass of a 4.2 x 10^3mole sample of potassium phosphate....
3 answers

100 POINTS AND GIVING BRAINLEIST TO BEST ANSWERDrag and drop each organic compound's role in nutrition next to the its name. Not

100 POINTS AND GIVING BRAINLEIST TO BEST ANSWER Drag and drop each organic compound's role in nutrition next to the its name. Not all tile will be used. 1. Provides the body with energy in the form glucose. 2. Helps the body build new cells, as well as skin and muscles. 3. Provides building materi...
3 answers

What's a balanced nuclear equation for the reaction in which the metal zirconium-97 undergoes beta decay?

what's a balanced nuclear equation for the reaction in which the metal zirconium-97 undergoes beta decay?...
4 answers

Nadia is making a 5.10 mol/dm^3 solution of urea. She has 9.05 moles in her solution, what is the volume in dm^3?

Nadia is making a 5.10 mol/dm^3 solution of urea. She has 9.05 moles in her solution, what is the volume in dm^3?...
4 answers

If the Kb of a weak base is 8.1×10−6, what is the pH of a 0.30 M solution of this base?

If the Kb of a weak base is 8.1×10−6, what is the pH of a 0.30 M solution of this base?...
4 answers

Calculate the specific heat (J/g °C) of metal if 985 J will raise 5.5 g from 30.0 °C to 70.2 °C?Note: Find the temperature change

Calculate the specific heat (J/g °C) of metal if 985 J will raise 5.5 g from 30.0 °C to 70.2 °C? Note: Find the temperature change and calculate specific heat; SH = J/g°C) SF = __ (Note: Choose the value with the least significant figures) SH = __ J/g°C...
7 answers

Define solar system (Help me please)

Define solar system (Help me please)...
3 answers

Rank the following from smallest to largest atomic/ionic radius.A). Na+, Na, Na- B). C, N, O C). Cl, Ar, K D). Be, Mg, Ca

Rank the following from smallest to largest atomic/ionic radius. A). Na+, Na, Na- B). C, N, O C). Cl, Ar, K D). Be, Mg, Ca...
8 answers

Who wants be my gurl

Who wants be my gurl...
3 answers

Which of these compounds are used to reduce acidity of soilCalcium Oxide and Ammonium SulfateCalcium Oxide and Calcium hydroxideAmmonium

Which of these compounds are used to reduce acidity of soil Calcium Oxide and Ammonium Sulfate Calcium Oxide and Calcium hydroxide Ammonium Sulfate salts...
4 answers

The distance from earth to the sun is about 94 million miles. How far is this in km? Write youranswer in scientific notation.

The distance from earth to the sun is about 94 million miles. How far is this in km? Write your answer in scientific notation....
8 answers

What is sublimation

What is sublimation...
5 answers

Cellular respiration is the blank of photosynthesis

Cellular respiration is the blank of photosynthesis...
10 answers

What are the similarities between diffusion, facilitated diffusion and osmosis?

What are the similarities between diffusion, facilitated diffusion and osmosis?...
6 answers

In each equation, how is the mass number on the left side of the arrow related to the sum of mass numbers on the right side of the

In each equation, how is the mass number on the left side of the arrow related to the sum of mass numbers on the right side of the arrow? Is this true for atomic numbers?...
3 answers

A gas sample is known to be a mixture of ethane and butane. A bulb of 200.0 cm^3 capacity is filled with the gas to a pressure of

A gas sample is known to be a mixture of ethane and butane. A bulb of 200.0 cm^3 capacity is filled with the gas to a pressure of 100.0 kPa at 20.0 C. If the weight of gas in the bulb is 0.3846 g, what is the mole percent of butane in the mixture?...
4 answers

How can you prepare a 2.4% by-mass KOH solution in 8.5g of solvent ?

How can you prepare a 2.4% by-mass KOH solution in 8.5g of solvent ?...
6 answers

Which group on the Periodic Table has at least one element in each of the three phases of matter at STP?

Which group on the Periodic Table has at least one element in each of the three phases of matter at STP?...

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