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Question #5a7e3

Question #3f1d8

Question #85744

What is the density of a material that has a mass of 5.6 g and when placed in a graduated cylinder changes the volume of water from 17.0 mL to 19.2 mL?

Question #f7fe6

Summarize HSAB theory?

Question #0899c

What is energy input and output on earth?

How do you solve empirical formula calculations?

A current of 1.6 A is measured through a lightbulb when it is connected across a 110 V source. What power is dissipated by the bulb?

Question #9bc50

What is the lattice energy?

How would you calculate the formal charge of NH3?

Question #c75aa

Question #eebf3

What is a amino acid?

What is the difference between a colloid and a solution?

What is the Doppler shift, and why is it important to astronomers?

A ball with a mass of #9 kg# moving at #14 m/s# hits a still ball with a mass of #18 kg#. If the first ball stops moving, how fast is the second ball moving?

Hello. Can someone help me with drawing hydrogen bonds among different molecules, with an example below? I understood how water molecules are linked to each other by hydrogen bonds. But I have a problem drawing these bonds in other biomolecules. Thanks!

How many moles of NaCl are in 0.350 L of a 1.5M solution?

Which of the following doesn't give a precipitate when dil.HCl is added?
1. NaAlO2
2. Na2ZnO2
3. BiOCl
4. AgNO3
5. NaOCl

Why do most of the plants grow on land and not in water? What are the reasons which makes land more favourable for growth of a plant as compared to water?

What is rotational dynamics?

In the reaction represented by the equation #2Al_2O_3 > 4Al + 3O_2#, what is the mole ratio of aluminum to oxygen?

What are the similarities between the Rutherford and Bohr atomic models of the atom? How did Bohr improve on the Rutherford model?

What nuclear reaction is the basis of an atomic bomb?

How much power is produced if a voltage of #15 V# is applied to a circuit with a resistance of #5 Omega#?

How do you find #sp^2# carbons?

What is the balanced equation for the complete combustion of pentane (C5H12)?

Are acids or bases more dangerous? Why?

Can you help me? From a 0.5 M #Na_2CO_3# solution having a volume of 300 ml, prepare a 0.075 M #Na_2CO_3# solution with a volume of 150 ml.

How would you write a balanced chemical equation for CH4 reacting with oxygen gas to produce water and carbon dioxide?

How do cohesion and adhesion explain capillary action?

What is the percent composition of #K_3PO_4#?

John took 45 minutes to bicycle to his grandmother's house, a total of four kilometers. What was his velocity in km/hr?

In a series circuit, what effect will adding more resistors to the circuit have?

How heavy will #6.14 * 10^25# atoms of gold be?

Question #3c6bf

If a current of #5 A# passing through a circuit generates #435 W# of power, what is the resistance of the circuit?

Complete the EQUATION:
NaOH (aq) + Na2SO4 (s) + Al (s) > ?

Question #2c065

Question #2b111

How many total atoms are in .660 g of #P_2O_5#?

Ryan hit a baseball with an acceleration of 40 m/#s^2#. The mass of the baseball is 0.5 kg. What is the force?

A circuit with a resistance of #3 Omega# has a fuse with a capacity of #2 A#. Can a voltage of #5 V# be applied to the circuit without blowing the fuse?

Hello. Can someone tell me why is DNA the genetic material in most of the organisms & not RNA? I need answers with reasoning & explanation. Thanks!

Question #2f296

Question #f3a4d

What is the relationship between energy and the speed of light?

A car is traveling at a constant speed of 12 m/s. When the driver accelerates, the car reaches a speed of 26 m/s in 6 s. What is the average acceleration of the car?

A circuit with a resistance of #6 Omega# has a fuse that melts at #8 A#. Can a voltage of #49 V# be applied to the circuit without blowing the fuse?

Question #af34e

Can you solve this? The concentration of the #Zn^(2+)# ions in blood serum is 1.2 ppm. Express this amount in terms of millimole/L and milliequivalent/L.

What is a general formula for an ester?

What are some examples of aggregate fruits?

What is the pH of a 0.0235 M #HCl# solution?

Question #269de

What is the functional group contained in the compound #CH_3CH_2NH_2#?

How much work does it take to raise a #7 kg # weight #9 m #?

Question #21241

A 0.310 mol sample of xenon gas has a volume of 22.0 L at a pressure of 0.470 atm. What is the temperature of the gas in degrees Celsius?

How does chemistry relate to our lives?

Question #295a0

In what order do electrons fill orbitals within a sublevel?

How can you use the VSEPR theory?

Calculate the volume of hydrogen required for complete hydrogenation of 0.25 #dm^3# of ethyne at STP?

What are the number of sublevels and electrons for the first four principal quantum numbers?

Phosphoric acid is neutralized by a solution of sodium hydroxide. What is the name of the salt formed from the neutralization?

What is the electric current produced when a voltage of #9 V# is applied to a circuit with a resistance of #69 Omega#?

I have a great confusion in significant and rounding off data, 834.8501 I have to be asked to round off to four significant, I have done it as 834.8, but teacher said it would be 834.9, she says rounding of 501 is greater than 500 so one is add into 8. ?

How fast will an object with a mass of #3 kg# accelerate if a force of #24 N# is constantly applied to it?

What is a metallic compound?

How can I demonstrate Boyle's law?

Question #1bdb3

Question #35e62

What is the final temperature after 840 J is absorbed by 10.0 g of water at 25°C?

Question #8fe41

A balanced lever has two weights on it, the first with mass #5 kg # and the second with mass #8 kg#. If the first weight is # 12 m# from the fulcrum, how far is the second weight from the fulcrum?

What is the molecular formula of a compound if its empirical formula is #CFBrO# and its molar mass is 381.01 g/mol?

What is the relationship between chlorophyll and the color of plants?

How would you identify a limiting reagent in a chemical reaction?

Question #c3d97

Question #6e96b

Question #7a915

What is the density of methyl chloride gas, #CH_3Cl#, at STP?

How are animal behaviors measured and interpreted?

A circuit with a resistance of #6 Omega# has a fuse melts at #5 A#. Can a voltage of #18 V# be applied to the circuit without blowing the fuse?

Question #4012f

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