The mass of anhydrous aluminum sulfate needed will be 73.48 grams.
<h3>Stoichiometric problem</h3>
Recall that:
Molarity = number of moles of solute/volume of solution
Also,
Mole = mass/molar mass.
Thus,
0.859 M = mole/0.250
mole = 0.21475 moles of aluminum sulfate.
Mass of 0.21475 moles = mole x molar mass
= 0.21475 x 342.15
= 73.48 grams
Thus, the mass of anhydrous aluminum sulfate needed to make 250.0 mL of 0.850 M solution will be 73.48 grams.
More on stoichiometric problems can be found here: brainly.com/question/28297916
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Answer:
REFRACTION IS THE BENDING OF A WAVE AS IT PASSES AT AN ANGLE FROM ONE MEDIUM TO ANOTHER. WHEN A WAVE MOVES FROM ONE MEDIUM TO ANOTHER, THE WAVE'S SPEED CHANGES. WHEN A WAVE ENTERS A NEW MEDIUM AT AN ANGLE, THE PART OF THE WAVE THAT ENTERS FIRST BEGINS TRAVELING AT A DIFFERENT SPEED FROM THE REST OF THE WAVE.
Explanation:
Answer:
D. Protons ; neutrons.
Explanation:
For a given element the number of protons is fixed, but the number of neutrons differ because the element usually consist of a number of isotopes.
For example Carbon has isotopes which contain 12, 13 and 14 neutrons.
So that is why you average the number of neutrons to find the approximate atomic mass..
North magnets attract the opposite side in this case south would attract to north and vise versa if it was negative it would attract to positive and vise versa
Converting the temperature, 295 K from Kelvin to Celsius scale:
Water has a boiling point of 
and a melting point of 
When we compare water at two different temperatures, 
we can say that water is in liquid form at both these temperatures as both of them are quite below the boiling temperature and above the melting temperature.
The temperature difference between water at the given two temperatures = 
Water at 
is at a higher temperature and so is warmer than water at a lower temperature of 
.
