Frequency of Deer at Local Pond
Date
Daily High Number of Deer
Temperature (°F) Seen at Pond
45
7
January 1
February 1
March 1
52
10
61
14
73
22
April 1
May 1
83
32
A scientist observed the number of deer that came to drink at a local pond on five different days. The table above shows the data
that she collected on those days.
Which of the following is supported by evidence seen in the data?
OA
More deer came to drink on days that were warmer.
OB.
The most important observations were made on May 1.
C.
More deer came to drink on days that were cooler.
OD
Observations from summer and fall months would have been more useful.

"you start with 15.67 g mgco3-xh2o, when heated and all the water is removed, you are left with 7.58 g mgco3 only.

therefore, you had 15.67 - 7.58 = 8.09g h2o  

moles of each :

7.58g mgco3 = ? moles = 7.58g / 83.4g/mole = 0.09moles  

8 09g h2o = ? moles = 8.09g / 18g/mole = 0.44moles  

molar ratio between the two by dividing both numbers by the smallest number :

0.09 / 0.09 = 1  

0.44 / 0.09 = 4.8  

mgco3-5h2o"

the potential energy of the reactants is 200j.

from the energy diagram, the energy of the product formed is 350j; this means that, this reaction is an endothermic reaction, because it absorbs energy from its environment.