Transpiration IS water loss through the root. This statement is true.
At STP (Standard Temperature and Pressure) there are 22.4 Liters in 1 mole.
Also there is 4g per every mole of Helium. You will use dimensional analysis to find the answer. You first start with grams, convert to moles, then convert moles to liters like so.
He = Helium
7500g He = 1 mole He = 1875 mole He
—————
4g He
1875 moles He = 22.4 L He = 42,000L He
—————
1 mole He
Answer should be 42,000 L of He
(Are you sure the question is 7,500 grams? Or does it say 75.00 grams?)
Answer:
A bias occurs in an experiment when a scientist expects something to happen and lets this influence how the results are viewed. Scientists try to reduce bias whenever they can by doing the experiment many times and keeping careful notes about observations.
Explanation:
Answer:
Carbon dioxide
Explanation:
In the making of the muffins, there are many ingredients are used including flour, egg, butter, sugar, and flavoring of fruits. There is also a raising agent, the baking powder or baking soda used that reacts with the batter.
This reaction form bubbles of carbon dioxide, trapped in the air spaces during the baking and muffin raises. Carbon dioxide makes muffins light, by lifting the batter as it bakes.
Answer:
Here... Since there is excess HCl, you know the Zinc will be the limiting reagent. I was able to create the reaction equation based on the info you gave: Z + 2HCl ----> ZCl2 +2H. Now, in order to find the theoretical yield of ZCl, you need to convert Zinc from grams to moles. Do this by dividing by its molar mass (65.38), thus: 3.68 (g) / 65.38 (g/mol) = 0.056286... moles.
Now, using the balanced equation we made earlier, we see that 1 mole of Zinc creates 1 mole of ZCl2. Thus our ratio is 1:1. This makes the next step easy. Since it is 1:1, we multiply the number of moles we have of Zinc (0.056286...) by the number of moles it will create of ZCl (1). (0.056286)(1) = 0.056286 moles ZCl. Now convert this to grams by multiplying by its molar mass (136.28) and you get 7.67 grams. This is your theoretical yield. The percent yield is found by dividing the actual amount obtained (7.12 g.) by the theoretical yield (7.67 g.) then multiply that by 100%. When this is done, your Percent Yield is about 92.8%