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To prepare a 25 mL solution of 2M calcium chloride (CaCl₂), you need to calculate the amount of CaCl₂ required. First, use the formula:
[ \text{Molarity (M)} = \frac{\text{moles of solute}}{\text{volume of solution in liters}} ]
For a 2M solution in 0.025 L (25 mL), you need 0.05 moles of CaCl₂. The molar mass of CaCl₂ is approximately 110.98 g/mol, so you would weigh out about 5.55 grams of CaCl₂ and dissolve it in enough water to make a final volume of 25 mL.
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What is a pair of values xy that make the equation true is called?
solution
Does a solution to an equation make the equation true or false?
A solution to an question makes the equation true. For example a solution to the equation 3x = x + 6 is x = 3, since 3(3) = 3+6.
What is the solution of an equation?
the set of all values which, when substituted for unknowns, make an equation true. this is wrong
Once you have come up with an answer to the solution you should return to the equation and make sure your answer satisfies it?
TRUE
Which of the following is a description of an annuity?
the insured agrees to make a lump-sum payment or series of payments to an insurance company...
How many 25ml do you need to make 160ml?
To determine how many 25ml portions are needed to make 160ml, you divide 160ml by 25ml. This calculation gives you 6.4. Since you can't have a fraction of a portion, you would need 6 full 25ml portions for a total of 150ml, and then an additional 10ml to reach 160ml. Thus, you would need 6 portions of 25ml and an additional 10ml.
Which of the following would make a solution?
sugar in water
You want 1 liter of 0.1 M NaCl and you have 4 M stock solution How much of the 4 M solution and how much dH2O will you measure out for this dilution?
To make 1 liter of 0.1 M NaCl solution, you will need 25 ml of the 4 M NaCl stock solution and 975 ml of water. This will give you the desired concentration of 0.1 M NaCl in a total volume of 1 liter.
Why do indigestion remedies sometimes make you burp?
An indigestion remedy is required to neutralize the acidity present in the stomach and esophagus, to do this a reaction of a base such as Calcium carbonate (CaCO2) to the abundant acids in your stomach (HCl). The product of this reaction is CO2 and CaCl. The CO2 is then "burb"ed up and the CaCl will be harmlessly disolved into the body.
What defines the slope value in a regression solution?
Don't write "the following" if you don't provide a list. It just doesn't make any sense.
How many 60 mg kmno4 tablets are needed to make following solution kmno4 1 5000 600 ml?
2 TABLETS
Which skincare companies make a refining mask?
The following skin care companies make a refining masks: Aveeno, Refinery Skincare, Proactiv Solution, Origins, Montagne Jeunesse, H2O Plus, Clinque, Comvita.
Why does calcium chloride make heat when mixed with water?
Calcium chloride (CaCl₂) is an exothermic salt, meaning it releases heat when dissolved in water. When calcium chloride is added to water, it dissociates into calcium ions (Ca²⁺) and chloride ions (Cl⁻), which interact with water molecules. This process releases energy in the form of heat as the ionic bonds are broken and the ions are stabilized by hydration, resulting in an increase in temperature of the solution.
How do you make a dilute solution?
Add water to the solution
Which of the ordered pairs in the form (x y) is a solution of this equation?
The question refers to "this equation". In such circumstances would it be too much to expect that you make sure that there is some equation that is following?
Where can I find chicken nest boxes?
If you are looking for an inexpensive solution the following link shows instructions on how to make one yourself. http://www.ehow.com/how_4842350_build-nesting-box-chickens.html
Can evaporation make a saturated solution unsaturated?
No, evaporation will most likely make the solution supersaturated
