The answer would be B the transfer of electrons from one atom to another
Answer:
In the primary visual cortex, simple cells are one of two physiological categories of cells. They have receptive fields that are made up of elongated, contiguous On and Off subregions that inhibit each other.
Question #1
Potasium hydroxide (known)
volume used is 25 ml
Molarity (concentration) = 0.150 M
Moles of KOH used
0.150 × 25/1000 = 0.00375 moles
Sulfuric acid (H2SO4)
volume used = 15.0 ml
unknown concentration
The equation for the reaction is
2KOH (aq)+ H2SO4(aq) = K2SO4(aq) + 2H2O(l)
Thus, the Mole ratio of KOH to H2SO4 is 2:1
Therefore, moles of H2SO4 used will be;
0.00375 × 1/2 = 0.001875 moles
Acid (sulfuric acid) concentration
0.001875 moles × 1000/15
= 0.125 M
Question #2
Hydrogen bromide (acid)
Volume used = 30 ml
Concentration is 0.250 M
Moles of HBr used;
0.25 × 30/1000
= 0.0075 moles
Sodium Hydroxide (base)
Volume used 20 ml
Concentration (unknown)
The equation for the reaction is
NaOH + HBr = NaBr + H2O
The mole ratio of NaOH : HBr is 1 : 1
Therefore, moles of NaOH used;
= 0.0075 moles
NaOH concentration will be
= 0.0075 moles × 1000/20
= 0.375 M
Answer : The final temperature of the water is, 
Explanation : Given,
Mass of benzene = 8.600 g
Molar mass of benzene = 78 g/mole
First we have to calculate the moles of benzene.
Now we have to calculate the energy of combustion.
The given balanced chemical reaction is:
According to reaction,
As, 2 moles of benzene gives 6542 kJ of energy on combustion.
So, 0.1103 mole of benzene gives 
of energy on combustion.
Now we have to calculate the final temperature of the water.
Formula used : 
where,
= heat released = 360.7913 kJ = 36079.13 J
= mass of water = 5691 g
= specific heat of water= 
= final temperature = ?
= initial temperature = 
Now put all the given values in the above formula, we get:
Therefore, the final temperature of the water is,
Answer:
a. form a hypothesis, conduct an experiment, record data, make a conclusion
Explanation:
Performing scientific investigations involved following the SCIENTIFIC METHOD, which is a rule or guideline followed in order to discover knowledge about natural phenomena. The scientific method has been divided into steps viz:
- Making observation/asking questions: In this case, the problem is HOW ANTS FEED.
- Formulating hypothesis: The hypothesis is a testable explanation given to solve the asked question.
- Testing hypothesis: The hypothesis must be able to be tested via conducting an experiment.
- Analyze result: The results of the test is recorded and analysed as data.
- Make conclusions: The conclusion either accepts or rejects the hypothesis depending on the result of the experiment.
Therefore, based on this; form a hypothesis, conduct an experiment, record data, make a conclusion are the steps Colby should take to best study the feeding patterns of ants
