Answer: To find the charge of an ion you must add the charge of protons and charge of electrons of an element.
Explanation: By doing this you get the overall charge of the ion.
The answer is B. darker; cooler the dark spots give off less energy then the rest of the sun.
Hope this helps
Answer:
Volume
Explanation:
Cubic centimeters are used to measure the space an object takes up, or its volume.
Answer:
130.4 grams of sucrose, would be needed to dissolve in 500 g of water.
Explanation:
Colligative property of boiling point elevation:
ΔT = Kb . m . i
In this case, i = 1 (sucrose is non electrolytic)
ΔT = Kb . m
0.39°C = 0.512°C/m . m
0.39°C /0.512 m/°C = m
0.762 m (molality means that this moles, are in 1kg of solvent)
If in 1kg of solvent, we have 0.712 moles of sucrose, in 500 g, which is the half, we should have, the hallf of moles, 0.381 moles
Molar mass sucrose = 342.30 g/m
Molar mass . moles = mass
342.30 g/m . 0.381 m = 130.4 g
4.167 m/per second 250 m/per minute
