Answer:
true
Explanation:
np have a good day brainliest?
Fe2(SO4)3.3H2O = 56*2 + 3*(32+16*4)+3*(1*2+16) = 454 g/mol
Mol =m/M = 10.5/454 = 0.023 mol
Can u mark it brainliest ?
Its chemical makeup doesnt change it is still aspirin
Hi there! The frequency of a wave is the amount of cycles (or waves) that occur in the given time. So, the answer is D. Normally, the time given is one second, so the frequency unit is Hertz (Hz) most of the time.
Here are some other definitions:
wavelength- the distance from one crest to crest or trough to trough
I hope this helps you! :))
Answer : The mass percentage of isopropyl alcohol in the solution is, 59.4 %
Explanation :
To calculate the mass percentage of isopropyl alcohol in the solution, we use the equation:
![\text{Mass percent of isopropyl alcohol}=\frac{\text{Mass of isopropyl alcohol}}{\text{Mass of isopropyl alcohol solution}}\times 100](https://tex.z-dn.net/?f=%5Ctext%7BMass%20percent%20of%20isopropyl%20alcohol%7D%3D%5Cfrac%7B%5Ctext%7BMass%20of%20isopropyl%20alcohol%7D%7D%7B%5Ctext%7BMass%20of%20isopropyl%20alcohol%20solution%7D%7D%5Ctimes%20100)
Mass of isopropyl alcohol = 6.68 g
Mass of isopropyl alcohol solution = 3.97 g
Putting values in above equation, we get:
![\text{Mass percent of isopropyl alcohol}=\frac{3.97g}{6.68g}\times 100=59.4\%](https://tex.z-dn.net/?f=%5Ctext%7BMass%20percent%20of%20isopropyl%20alcohol%7D%3D%5Cfrac%7B3.97g%7D%7B6.68g%7D%5Ctimes%20100%3D59.4%5C%25)
Thus, the mass percentage of isopropyl alcohol in the solution is, 59.4 %