As bracelet is dangling it means there is possibility that the dangled part of bracelet may touch or collide with any lab stuff during performing an experiment
As mentioned in the options the student should remove the dangling bracelet during heating of test tube of acid solution in hot water bath to minimize the chance the bracelet pulling over a test tube, causing a spill.
The acid spill may cause burning , skin irritation, rashes etc
Answer: ty for the free pointshehehehe
I am assuming that this compound contains carbon, hydrogen and oxygen. The molar mass of carbon, hydrogen and oxygen is 12, 1 and 16 grams/mol. Given these molar mass we now need to know the number of C H and O in the compound. To have 132 the compound must be C6H12O3
The correct answer would be:
D. Mixtures can be separated by physical means.
Answer:
a) quadruple covalent bond
Explanation:
Quadruple covalent bonds are the strongest covalent bonds. The more the number of bonding pairs, the stronger the bond becomes.
- A covalent bond is formed by sharing of electrons between two species.
- They are usually between compound with similar electronegativities.
- The number of bonds between the atom determines the bond strength.
Single < double < triple < quadruple covalent bonds.