What will happen to Geobacillus stearothermophilus plates originally incubated at 30 degrees Celsius if they are left at room temperature? Why?
The bacteria Geobacillus stearothermophilus is a thermophile. This bacteria can only grow at high temperature. If the plate is left at room temperature, the bacteria stops growing and eventually it dies. The optimum growth condition for this bacterium is 30 - 75 degree Celcius. Standard room temperature is 24 degree Celcius. This temperature is much lower than 30 degree and hence, the bacteria stops growing and dies eventually.
What will happen to Geobacillus stearothermophilus plates originally incubated at 30 degrees Celsius if they are...
You have 400.0 grams of room temperature water at 20.0 degrees Celsius in a thermos flask. You drop 130.0 grams of ice at 0.00 degrees Celsius into the thermos and shut the lid. (a) What is the equilibrium temperature of the system? (b) How much ice is left in grams? Answer up to 3 significant figures.
Calculate the final volume of 50 L of gasoline originally at 14 degrees Celsius when it warms to 36 degrees Celsius.
An 80g ice cube at 0 degrees Celsius is placed in 798g of water at 30 degrees Celsius. What is the final temperature of the mixture? The latent heat of fusion for water is 3.33x10^5J/kg and the specific heat of water is 4186J/(kg x degrees Celsius).
What is the unique about the appearance of growth of S. marcescens at the different temperatures? Why will a bacterium not grow at temperatures below its minimum temperature for growth? Why won’t it grow at temperatures above its maximum temperature for growth? For S. marcescens, what would happen if you moved the tubes incubated at 4 Celsius to 23 Celsius? Why? What would happen if you moved the tube incubated at 55 Celsius to 23 Celsius? Why?
Acetone has a melting point of -95degree Celsius and a boiling point of 56 degrees Celsius. Which phase (solid, liquid, or gas) is present at the following temperature?1. Inside this room(25 degree Celsius) . 2 . Dark side of the moon ( - 153 degrees Celsius) . 3. Outside on a very cold winter morning (-5 degrees Celsius). 4. Light side of the moon (123 degrees Celsius) . 5 . Very hot summer day (38 degrees Celsius)
At 22.0 degrees Celsius an "empty" 30-ml syringe had a volume of 5.0 ml. After a liquid is introduced and the temperature is raised to 32.0 degrees Celsius, the volume becomes 10.2 ml. The barometer pressure is 745.8 mmHg, 1. what was the pressure of the air inside the syringe when the syringe was "empty"? 2. What is the pressure of the air inside the syringe after the liquid has been introduced and the temperature raised to 32.0 degrees Celsius?...
what is the equilibrium temperature when pouring 200 grams at 80 degrees Celsius while at room temperature into a 50 gram brass flask?
8. A 1.00 kg piece of aluminum (specific heat = 902 J/kg*C) originally at 90 degrees Celsius is placed in a container of water (specific heat = 4184 J/kg*C) originally at 25 degrees Celsius. The final temperature of the system is 40 degrees Celsius. What is the mass of the water in the container? (report your answer in kilograms to 3 decimal places)
Two Rooms, one kept at 30 Degrees Celsius and the other at 10 Degrees Celsius, are separated By a 4m x 4m x 12 cm Brick wall. Calculate the power of the heat source required in the warmer bathroom.
Refrigerated food is kept between -2 degrees Celsius and 14 degrees Celsius. The number of bacteria that would be present in the food can be calculated using the equation: N = 20t2 - 20t + 120, where N = number of bacteria in food and t = temperature in degrees Celsius At what temperature will the number of bacteria be minimal?