Answer:
of sodium arsenate would be present in a 1.70 L sample of drinking water that just meets the standard.
Explanation:
Mass of sodium arsenate =x
Mass of water = M
Density of water = d = 1000 g/L
Volume of the water , V= 1.70 L
M =
1 Parts per billion = 1 μg/kg =
(1 kg =1000 g)
Moles of arsenic =
1 mole of sodium arsenate has 1 mol of arsenic atom.Then of arsenic will found in:
of sodium arsenate.
Mass of of sodium arsenate:
of sodium arsenate would be present in a 1.70 L sample of drinking water that just meets the standard.
Answer:
thermal circulation cells
Explanation:
The three cell model of global wind circulation model is the model that give some us the relationship between the wind patterns that is present on our earth to the sunlight (heat) received from the sun.
Now the sunlight (heat) received from the sun is dependent on the earth axis tilt and on the heating of the earth’s surface due to solar heating therefore these two comes under the global circulation model apart from that the movement of air is also dependent on the Coriolis force and hence it also comes under the global wind circulation model but thermal circulation cells are the cells that are described in this model and hence they don’t come under this model therefore thermal circulation cell is the option which is absent in the three cell model of global circulation. Therefore option “c” is correct.
Answer:
<u>Who: </u>Svante Arrhenius.
When: Claimed in 1896 that fossil fuels has a negative effect on our atmosphere.
<u>How:</u> Svante Arrhenius proved that fossil fuels had a negative effect by calculating the output of buildings that emit fossil fuels, and lead to the conclusion by his calculations that the industry might one day bring global warming. Svante Arrhenius' theory of electrolytic dissociation and his model of the greenhouse effect also helped him to prove that his remarks about fossil fuels and global warming is true.
<u>Where:</u>
I cannot find any source that mentions the where. What do you mean by where?
I hope my other information help you. I apologies to only be able to answer partially.
<h3>Answer:</h3>
221.90 g.mol⁻¹
<h3>Explanation:</h3>
The mass of contained by a molecule is known as molecular mass. It is the sum of atomic weights of the elements contained by the molecule. In given case Iodine Pentafluoride has a chemical formula,
IF₅
The atomic weights of each element are as;
Iodine = 126.90 g.mol⁻¹
Fluorine = 19.00 g.mol⁻¹
As there are five atoms of Fluorine so, we will multiply the atomic weight of Fluorine by five and that of Iodine by one as there is only one Iodine atom.
Therefore,
Molecular Mass of IF₅ = (1 × 126.90 g.mol⁻¹) + (5 × 19.00 g.mol⁻¹)
Molecular Mass of IF₅ = (126.90 g.mol⁻¹) + (95.00 g.mol⁻¹)
Molecular Mass of IF₅ = 221.90 g.mol⁻¹
According to VSEPR theory, what causes water molecules to have a bent shape?
Answer: Out of all the options presented above the one that best represents what causes water molecules to have a bent shape according to VSEPR theory is answer choice B) repulsive forces between specific lone pairs of electrons. the bond angle in a water molecule is bent.
I hope it helps, Regards.