Answer:
D. nuclear fusion because atomic nuclei combine to form a heavier nucleus
Explanation:
Answer : The amount of energy released would be,
Solution : Given,
Mass =
conversion : (1 Kg = 1000 g)
Speed of light =
Formula used :
where,
E = energy released
m = mass
c = speed of light
Now put all the given values in this formula, we get
Therefore, the amount of energy released would be,
Answer:
cation
Explanation:
An atom that has lost an election becomes a positively charged ion and it's called a<em> </em><em>cation</em>
Answer:
96,532,000,000,000,000,000,000 ions.
Explanation:
- Assume the highest concentration of HCl in the stomach (160 mmol/L) that is in the canaliculi.
- This means that 1.0 L of the stomach acid contains 0.160 mol.
- Every 1.0 mole of HCl contains Avogadro’s number of molecules (6.022 x 10²³) molecules.
- Every 1.0 molecule of HCl contains 1.0 H⁺ ion.
<u><em>Using cross multiplication:</em></u>
1.0 mole of HCl → 6.022 x 10²³ H⁺ ions.
0.160 mole of HCl → ??? H⁺ ions.
∴ The no. of H⁺ ions in 1 liter of stomach acid = (6.022 x 10²³ H⁺ ions)(0.160 mole of HCl) / (1.0 mole of HCl) = 9.6352 x 10²² ions = 96,532,000,000,000,000,000,000 ions.
Answer:
b) warming up a) wavelength a) blank c) sample
Explanation:
<em>To run a spectrophotometry experiment, begin by </em><em>warming up</em><em> the spectrophotometer and preparing the samples.</em> It is important that the equipment is warmed up for at least 30 minutes before starting the measurements.
<em>Be sure to select the correct </em><em>wavelength</em><em>, then run a measurement on the </em><em>blank</em><em> solution.</em> The selected wavelength depends on the analyte of interest. The black solution contains the same matrix but it doesn´t contain the analyte.
<em>Follow up by running measurements on </em><em>sample</em><em> solutions. Once data is collected, turn off the instrument, clean the area, and discard the samples. </em>The samples are those of unknown concentration that we want to determine.