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Which sample had the lowest final temperature?
Sample B had the lowest final temperature.
What is the mass (by difference) of a sample if the initial mass of the sample in the bottle was 28.81-g and the final mass of the bottle and sample was 21.33-g?
7.48
If 20.00mL of a 1.50M solution of KBr is diluted to a final volume of 150.0mL what is the new molar concentration?
initial molarity*initial volume= final molarity*final volume Initial molarity= 1.50M Initial volume= 20.00ml Final Volume=150.0ml Thus final molarity =1.50M*20ml/150ml=0.200M. New molar concentration= final molarity
What is the molarity of a solution that is made using 1.2 moles of a substance in 500mL?
Molarity (M) is defined as moles of solute/liters of solution. Assuming the final volume is 500 ml (0.5 liters), then M = 1.2 moles/0.5 liters = 2.4 M
What does final volume minus initial volume mean?
Final volume minus initial volume refers to the difference between the volume at the end of a process or measurement and the volume at the beginning. It indicates the change in volume that occurred between the two points.
A sample of zinc is placed in a graduated cylinder. The initial volume of water= 15.0mL and final volume of water and sample= 24.0mL. Determine the mass of the sample of zinc?
what?
What is the formula for dilution factor?
Dilution factor is the final volume / aliquot volume. Aliquot volume is the measure of sub volume of original sample. Final volume is the total volume. Dilution factor =final volume /aliquot vol. for example ; what is the df when you add 2ml sample to 8m??? total vol is 2+8=10 DF=total vol/aliquot. 10/2=5 So 5 is dilution factor
500mL quantilty of vanilla ice cream has a mass of 400 grams The manufacture then bubbles air into the ice cream so that is volume increased by 300 mL what is the approximate final density?
700 g
How will you prepare 500ml of 1N KOH solution?
To prepare 500mL of 1N KOH solution, you will need to dissolve 20 grams of KOH (potassium hydroxide) in enough water to make a final volume of 500mL. The molarity of the solution will be 1N, meaning it will contain 1 mole of KOH per liter of solution. Remember to wear appropriate safety gear such as gloves and goggles when working with chemicals.
Which sample had the lowest final temperature?
Sample B had the lowest final temperature.
What is the mass (by difference) of a sample if the initial mass of the sample in the bottle was 28.81-g and the final mass of the bottle and sample was 21.33-g?
7.48
What volume will 1.25 liters of carbon dioxide occupy at 50.0 degrees if the pressure changes from 0.865 ATM to 0.820 ATM?
Using the ideal gas law (PV = nRT), you can calculate the initial and final number of moles of CO2. Given that the temperature remains constant, the ratio of the initial volume to final volume is equal to the ratio of the initial pressure to the final pressure. Applying this ratio to the initial volume of 1.25 liters will give you the final volume.
A 60.0 g sample of Na-OH is dissolved in water and the solution is diluted to give a final volume of 3.00 L what is the molarity of the final solution?
Molarity = moles of solute / liters of solution. First, calculate the moles of NaOH using its molar mass. Then, divide the moles by the final volume in liters (3.00 L) to find the molarity.
What is the final concentration of a solution prepared by diluting of HCl to a final volume of?
To find the final concentration of a solution after dilution, you can use the formula: (C_1V_1 = C_2V_2), where (C_1) is the initial concentration, (V_1) is the initial volume, (C_2) is the final concentration, and (V_2) is the final volume. Plug in the values for the initial concentration, volume, and final volume to calculate the final concentration of HCl.
If your nanodrop is giving you a plasmid DNA concentration of 178.9 ng/µL what is the volume of sample, you need to take in order to have 10 ng DNA final concentration?
This will give you info
If 20.00mL of a 1.50M solution of KBr is diluted to a final volume of 150.0mL what is the new molar concentration?
initial molarity*initial volume= final molarity*final volume Initial molarity= 1.50M Initial volume= 20.00ml Final Volume=150.0ml Thus final molarity =1.50M*20ml/150ml=0.200M. New molar concentration= final molarity
What will be the volume of a gas sample at 309 K if its volume at 215 K is 3.42 L.... assume the pressure is constant?
You can use the formula: V2 = V1 * (T2 / T1), where V1 is the initial volume (3.42 L), T1 is the initial temperature (215 K), T2 is the final temperature (309 K), and V2 is the final volume. Plugging the values into the formula, you get V2 = 3.42 * (309/215) ≈ 4.90 L.
