Answer:
0.96 M
Explanation:
M1 x V1 = M2 x V2
M1 = ?
V1 = 500 mL
M2 = 1.6 M
V2 = 300 mL
Plug in the variables:
(M1)x(500) = (1.6)x(300)
(M1)x(500) = 480
Divide both sides of equation by 500:
M1 = 0.96 M
Answer:
Mercury is a thick substance and able to sustain and hold anything with any metallics with metal, such as with water it is not working as water is a thin substance and not able to hold heavy things
Explanation:
Answer:
Explanation:
Mass of stock solution = 20 g
Molar mass of NaOH = 40 g/mol
Volume of stock solution = 0.150 mL
= Concentration of NaOH for the final solution
= Amount of stock solution taken = 15 mL
= Total volume of solution = 65 mL
Molarity is given by
We have the relation
The concentration of NaOH for the final solution is .
Question 1Which of the following describes the treatment in an investigation?
the factor that is changed in order to observe a response
Question 2
Which statement best describes an independent variable?
The variable you change in an investigation
Question 3
Liam did an investigation to see how water temperature affects the amount of salt that will dissolve in the water. He filled 4 beakers with exactly 100 milliliters of water each. He then heated each beaker to a different temperature and tested salt solubility at each different temperature. What was Liam's independent variable?
the temperature of the water in each beaker
Question 4
Which of the following is an example of a treatment?
Changes made to the temperature of a greenhouse
Question 5
Jose is curious about which home remedy removes skunk smell from his dog. Which of the following is a variable that must be kept constant?
The home remedy used
Question 6
It is not important to make sure that all variables other than the independent variable are kept constant.
False
Question 7
In order to determine whether or not a substance is an acid or a base, you may stick your finger in the container and make your decision based on whether or not your finger feels slippery.
False
Question 8
A poison hazard symbol means your should not let chemicals contact your skin, ingest or inhale the substance.
True
Question 9
Repeating an experiment is important because
it reduces the chance of error
Question 10
When using repeated trials during a scientific investigation, scientists should find the average of their data for use in their final report.
True