This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: The ratio of substance X to substance Y in a solution is measured in two separate trials. The ... (Read 92 times)

ts19998

  • Hero Member
  • *****
  • Posts: 531
on: Jun 25, 2018
The ratio of substance X to substance Y in a solution is measured in two separate trials. The concentrations, ratios of X/Y, and log(X/Y) are presented in this table.
 
  Trial Concentration of X Concentration of Y Ratio X/Y log(X/Y)
  1 20 10 2 0.301
  2 10 20 0.5 ?
 
  What is the log of X/Y from trial 2?
  A) 0.301
  B) -0.301
  C) 3.01
  D) -3.01

Question 2

Consider the following expression. 9 - (-3) Which of the following expressions is another way of writing this?
 
  A) 3 + 9
  B) 3 - 9
  C) 9 + 3
  D) 9 - 3


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

emilymalinowski12

  • Sr. Member
  • ****
  • Posts: 338
Reply #1 on: Jun 25, 2018
Answer to Question 1

B

Answer to Question 2

C


ts19998

  • Member
  • Posts: 531
Reply 2 on: Jun 25, 2018
Gracias!

ultraflyy23

  • Member
  • Posts: 312
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

Did you know?

When Gabriel Fahrenheit invented the first mercury thermometer, he called "zero degrees" the lowest temperature he was able to attain with a mixture of ice and salt. For the upper point of his scale, he used 96°, which he measured as normal human body temperature (we know it to be 98.6° today because of more accurate thermometers).

Did you know?

In inpatient settings, adverse drug events account for an estimated one in three of all hospital adverse events. They affect approximately 2 million hospital stays every year, and prolong hospital stays by between one and five days.

Did you know?

Cutaneous mucormycosis is a rare fungal infection that has been fatal in at least 29% of cases, and in as many as 83% of cases, depending on the patient's health prior to infection. It has occurred often after natural disasters such as tornados, and early treatment is essential.

Did you know?

Cyanide works by making the human body unable to use oxygen.

Did you know?

Patients who have been on total parenteral nutrition for more than a few days may need to have foods gradually reintroduced to give the digestive tract time to start working again.

A simulated-color map of the surface of Venus as measured by synthetic aperture radar on the Magella A simulated-color map of the surface of Venus as measured by synthetic aperture radar on the Magella
Interactions Between Macroions in Solution Interactions Between Macroions in Solution
How to detemine the PH of a solution when given the hydrogen concentration How to detemine the PH of a solution when given the hydrogen concentration
Function, even or odd, solution Function, even or odd, solution
How many moles of AgCl are contained in 244 mL of 0.135 m AgCl solution? The density of the ... How many moles of AgCl are contained in 244 mL of 0.135 m AgCl solution? The density of the ...
Consider an aqueous solution of calcium nitrate added to an aqueous solution of sodium ... Consider an aqueous solution of calcium nitrate added to an aqueous solution of sodium ...
Video: Neural regulation of mechanical digestion- CNS voluntary, ANS & ENS controlled involuntary movements

For a complete list of videos, visit our video library