<span>Based on the experience of the responder, to correctly calculate measurements in real-world. Firstly is to avoid errors as much as possible. Errors are what makes your measurement invalid and unreliable. There are two types of error which is called the systematic error and the random error. Each error has different sources. Words that were mentioned –invalid and unreliable are very important key aspects to determine that your measure is truly accurate and consistent. Some would recommend using the mean method, doing three trials in measuring and getting their mean, in response to this problem.</span>
Answer:
50 gram calcium do you need
Explanation:
please make me brainlist answer
Answer: The volume of the balloon up there is 6.192 L.
Explanation:
Given:
= 1.80 L,
= 785 mm Hg (mm Hg = 0.00131579) = 1.032 atm
= 0.300 atm,
= ?
Formula used to calculate volume is as follows.

Substitute the value into above formula as follows.

Thus, we can conclude that the volume of the balloon up there is 6.192 L.
Answer:
The approximate bond angle around the central carbon atom in acrolein is 120°.
Explanation:
The structure of acrolein is shown in the attachment. From the structure, we can deduce that the central carbon atom is in an sp2 hybridization (Atoms with a double bond hybridize in an sp2 fashion).
Atoms with sp2 hybridization have trigonal planar geometry, in this kind of hybridization, bonds are oriented the farthest away possible from each other, to minimize overlapping and the angle that allows that is 120°.
Answer:they have the same number of electrons in the valence shell
Explanation: