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Sensitizer
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Who was Erasto B. Mpemba?
Erasto B. Mpemba was a scientist from Tanzania who discovered that warm milk cools faster than cold milk while doing an experiment with his classmates.
Which comes last in the scientific method a developing a theory b proposing a hypothesis c conducting an experiment d testing a hypothesis?
Testing experimentally a hypothesis is the last step.
In Part B of the experiment a student mixes 25.0 mL of 1.1 M HCl (aq) with 25.0 mL of 1.000 M NaOH (aq) in a well-insultated calorimeter and observes that the temperature of the solution increases by?
In Part B of the experiment, a student mixes 25.0 mL of 1.1 M HCl (aq) with 25.0 mL of 1.000 M NaOH (aq) in a well-insultated calorimeter and observes that the temperature of the solution increases by 6.90 °C. (These are similar conditions as the previous two problems.) How many moles of water are formed?
When heating chemical that could be volatilewhat would be the best way to conduct experiment?
You would conduct the experiment in a fume cupboard.... so that (a) any noxious gasses are vented from the lab, and (b) people are protected against explosions by the reinforced doors of the cupboard.
How would you prepare 4N dilute sulfuric acid from concentrated sulfuric acid for use in an experiment?
use the equation: NaVa=NbVb Where N is the normality and V is the volume. NOTE a is the original and b is what you're making. You would sove for Va
What is a good solvent to extract Rhodamine B out of a highliter?
methanol
What behaviorist conducted the Little Albert experiment?
John B. Watson conducted the Little Albert experiment in 1920.
How do they dye fireworks?
If you're talking about smoke dyes, the dye (rhodamine B, Auramine, phthalocyanine, etc...) is mixed with a 'carrier composition', usually based on Potassium chlorate and lactose or wheat flour. The burning mixture vaporises the dye to give smoke of the corresponding colour.
In his ticking clock experiment, Robert Boyle demonstrated that?
13
In an experiment the control variable is a and the response variable is b. Which variable is manipulated or changed?
A
What is a control of a science experiment?
For instance, if you wanted to experiment on plant a, plant b, and plant c. You would put plant c to one side, treat it like a normal plant (water, feed, etc.) and call that the control. You could then experiment on plant a and plant b - feeding them differing fertilisers, allowing pests to attack the plants, and so on. At the end of the experiment, you could compare the growth of plant a and plant b to the control plant c. Though plants are mentioned above, the principle relates to any experiment - you need a control to compare against the end results of the experiment.
In an experiment the hypothesis is If the wavelength of the light shining on a plant is shortened the rate of photosynthesis is slowed down If this experiment is performed?
a) testiable b) falisable c)both of the above d) none of the above the answer is , B ; falsiable . (: ENJOYYY ! <3
In an experiment the hypothesis is If the wavelength of the light shining on a plant is shortened the rate of photosynthesis is slowed down. If this experiment is performed .?
a) testiable b) falisable c)both of the above d) none of the above the answer is , B ; falsiable . (: ENJOYYY ! <3
What are the role of taxes imports?
a negative B +
The group that does not receive the experimental treatment in an experiment is the?
control group
what is the role of b?
Drive B is reserved for use with a(n additional) floppy drive
Do you need to include the purpose hypothesis experiment and conclusion in your science fair notebook?
(A) What you did in your experiments? (B) What was your plan? (C) How you did your experiment? All of these are the conclusion that you can use. Well actually you have to use all of these. To figure and what you will have to write in your experiment for your conclusion.
