Answer:
196 gdm-3
Explanation:
There are two major units of concentration, moldm-3 and gdm-3. The first unit refers to molar concentration while the second unit refers to mass concentration. Both units are useful in chemistry when describing the concentration of solutions as deemed expedient in each particular case.
Here we are required to compute the mass concentration from the molar concentration. We must recall that; mass concentration= molar concentration × molar mass
Let us first obtain the molar mass of H2SO4 from the relative atomic masses given=
2(1) + 32 + 4(16) = 98 gmol-1
Molar concentration of H2SO4 = 2 moldm-3
Mass concentration= 2 moldm-3 × 98 gmol-1
Mass concentration = 196 gdm-3
Answer:
There is a basic difference, because mass is the actual amount of material contained in a body and is measured in kg, gm, etc. Whereas weight is the force exerted by the gravity on that object mg. Note that mass is independent of everything but weight is different on the earth, moon, etc.
The molar mass of the gas is 35. glmol.
the molar mass of a chemical compound is described as the mass of a sample of that compound separated by the amount of substance in that sample, measured in moles.
The molar mass is a bulk, not molecular, effects of a substance.
<h3>What is molar mass and how is it calculated?</h3>
The molar mass is the mass of one mole of a sampling. To find the molar mass, count the atomic masses (atomic weights) of all of the atoms in the molecule. Find the atomic mass for each element by using the mass shown in the Periodic Table or table of atomic weights.
<h3>What is molar ?</h3>
Molar refers to the unit of concentration molarity, which is equivalent to the number of moles per liter of a solution. In chemistry, the word most often guides to molar concentration of a solute in a solution. Molar attention has the units mol/L or M.
To learn more about the molar mass, refer
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Answer:
It leads to new jobs that search for innovative ways to control emissions.
Explanation:
Publishing a report that is a revised list of green house gases by scientists underscores the importance of new new jobs that seek ways of controlling emissions. The publication will inspire scientific research into control of emission of greenhouse gases. This will create new jobs for scientists who will be charged with the responsibility of ensuring that emission of Tue newly discovered greenhouse gasses is greatly reduced.
Several scientists earn a living by actively carrying out research on control of the emission of greenhouse gasses.
Answer:
1.These results are accurate because the collected data is very close to the actual value.
4.These results are precise because all three trials are within a very close range.
Explanation:
Although in the ordinary language the terms precision and accuracy may be confused, in science those terms refer different properties of the measurements.
The accuracy is how close a measurement is to the true value, while the the precision refers to the reproducibility and repeatability, this is how the results show the same (close) value.
To differentiate precision and accuracy, It is very illustrative, to use the image of a throwing arrows to a target: if the arrows get close to the center of the target, then the results are accurate (close to the goal). If the arrows are not close to the cener of the target, but they are all close to each other, then the result is precise (the arrows land, approximately, in the same spot every time).
