Answer:
1.37 x
CFU/mL
Explanation:
First, the dilution factor needs to be calculated.
Since four 9 ml dilution blanks were prepared, the dilution factor that yielded 137 colonies is of
.
Next is to divide the colony forming unit from the dilution by the dilution factor:
137/
= 137 x 
In order to get the CFU/ml, divide the CFU from the dilution by the plated volume (1 mL) from the final dilution tube.
137 x
/1 = 1.37 x 
Hence, the CFU/ml present in the original <em>E. coli </em> sample is 1.37 x
.
cfu/ml = (no. of colonies x dilution factor) / volume of culture plate
The answer is actually A, 1s 2s 2p 3s 3p 4s 3d 4p.
Answer:
<h2>The answer is 50 g</h2>
Explanation:
The mass of a substance when given the density and volume can be found by using the formula
<h3>mass = Density × volume</h3>
From the question
volume of liquid = 50 mL
density = 1g/mL
The mass of the liquid is
mass = 50 × 1
We have the final answer as
50 g
Hope this helps you
The average speed is 0.28