The reaction between HCl and NaHCO3 will be;
HCl + NaHCO3 = NaCl + CO2 + H2O
The relative formula mass of NaHCO3 is 84 g/mol
Moles of NaHCO3 in 2 g will be; 2/84 =0.0238 moles
The mole ratio of HCl and NaHCO3 is 1;1
Thus, the number of moles of HCl is 0.0238 moles
The volume of HCl will be;
= 0.0238 moles/0.2
= 0.119 liters or 119 cm³
Answer:
protons+neutrons = atomic mass
11+12 = 23
so the element which has an atomic mass of 23 is
<h2>Sodium (Na)</h2>
The measurement of Rachel’s group is precise but not accurate while the measurement of Ashley’s group is accurate but not precise.
Precision has to do with how close together the values obtained from a scientific measurement is. If we take a look at the values obtained by Rachel’s group, we will notice that the values are exactly 1.00 g apart. This means that the values are precise.
However, these values a far from the actual value which is 100.00 g therefore the measurement of Rachel’s group is precise but not accurate.
On the other hand, the values obtained by Ashley’s group are; 99.5 g, 100.1 g, and 100.5 g. These values are very close to the actual value which is 100.00 g hence they are accurate.
The values obtained by Ashley’s group do not have consistent intervals therefore, they are not precise.
Learn more; brainly.com/question/15664210
Answer:
Plasma
Explanation:
Plasma is a state of matter that in some cases is a synonym of ionized gas. It consists of groups of ions (particles with a net charge) with some of their outer electrons removed.
How many electrons have been removed depends on the type of plasma, since the most energetic plasmas are completely free of orbiting electrons. This is the case of the interiors of the sun and other stars.