Answer: xx xx
xxOxxCxxSxx
Explanation:
Sorry for the structure, but since Oxygen and Sulfur belong to group of six they want to share two electrons. Carbon belonging to group four wants to share 4 since its valence shell has four electrons.
Therefore the resulting Lewis structure is linear (like carbon dioxide) with two pairs of lone pairs in each O and S atoms and 0 lone pairs in carbon and two double bond.
Answer:
this us a pm interesting question
Explanation:
good job
Answer:
24.12 days
Explanation:
First off, let's find out how many decays the compound ; iodine131 undergoes to get to 17.5 percent of its original value.
Half life is simply the time required for a quantity to reduce to half of its initial value.
The half-life of iodine-131 is 8.04 days.
100% - 50% (First Half life)
50% - 25% (Second Half life)
25% - 17.5% (Third Half life)
This mwans i would take three halff lives;
Time requred = 3 * Half life = 3 * 8.04 days = 24.12 days
Answer:
Question 1: -7.3ºC
Question 2: 67.50%
Explanation:
Question 1:
For different reasons a thermometer can not give the exact temperature that it is measuring, such as incorrect calibration. So the thermometer will have an error, and for this, we can have a thermometer correction, doing experiments with a substance that we know the temperature. In this question that substance was benzoic acid.
The thermometer correction (Tc) is the temperature that was measured less the real temperature, so:
Tc = 115.1 - 122.4 = -7.3ºC
It means that the temperature given by the thermometer is 7.3ºC less than the real.
Question 2:
Recrystallization is the process of transforming the liquid in its solid form (crystals). So, the sample of 4.00 grams of benzoic acid, there'll be water or other impurities. The total benzoic acid given was 2.70 grams, so its percentage will be:
(mass of acid/ total mass)x100%
(2.70/4.00)x100% = 67.50%
