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14d

A 1.46 mol sample of O2 gas is confined in a 35.4 liter container at 22.3 °C.

A 1.46 mol sample of O2 gas is confined in a 35.4 liter container at 22.3 °C.If the volume of the gas sample is increased to 70.8 L, holding the temperature constant, the pressure will decrease.... more

How Down Syndrome can be detected?

How Down Syndrome can be detected?

06/13/20

Is the genetic disease recessive, dominant, codominant, or incompletely dominant, and why?

A man with normal vision marries a red-green color blind woman. They have eight children in total (five boys and three girls). All of their sons are born with red-green color blindness, while... more

06/09/20

Calculating ion molarity using solute mass

A chemist prepares a solution of sodium chloride (NaCl) by measuring out 70.mg of NaCl into a 300.mL  volumetric flask and filling to the mark with distilled water.Calculate the molarity of Cl−... more

05/08/20

Keystone species

Define and give a real life example of a keystone species.

meiosis Questions

Meiosis  After the first Meiotic division, are the daughter cells haploid, diploid, or polyploid? After the second Meiotic division, are the daughter cells haploid or diploid? Which 2 processes in... more

05/06/20

Acid base and pH

Determine the pH of a 6 ×10^−4 M solution of HBr.

05/06/20

Using standard thermodynamic data at 298K, calculate the free energy change when 1.91 moles of Fe2O3(s) react at standard conditions.

Consider the reactionFe2O3(s) + 3H2(g)2Fe(s) + 3H2O(g)Using standard thermodynamic data at 298K, calculate the free energy change when 1.91 moles of Fe2O3(s) react at standard... more

Which of the following transformations represent an increase in the entropy of the system.

Which of the following transformations represent an increase in the entropy of the system.Choose all that apply43 g C2H5OH (liquid, 171K)  43 g C2H5OH (liquid, 340K)47 g Co (liquid, 1.768×103K)  47... more

05/05/20

Chemistry question help

A technician placed an amount of the clourless gas dinitrogen tetraoxide into a flask. He closed the flask and allowed the reaction to reach equilibrium. The dinitrogen tetraoxide partially... more

05/05/20

N2(g) + O2(g) >< N2O(g)

At a very high temperature, nitrogen at an initial concentration of 1.20 mol/L is mixed with oxygen at an initial concentration of 1.00 mol/L. This reaction mixture reaches equilibrium when the... more

05/02/20

Biology Question

QUESTION 44Which enzyme is responsible for synthesizing new strands of RNA molecules?  a. RNA ligase  b. RNA polymerase  c. DNA polymerase  d. Helicase

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