Answer:
Mass= 314.96 grams
Explanation:
The density of the substance is defined as mass per unit volume of it.
The formula is :
<u><em>Unit conversion:</em></u>
1 liter = 1000 ml
So
....(1)
Replace The dm3 by cm3 in (1)
<u>
</u>
<u>Volume = 254 mL = 254 cm3</u>
<em><u>Calculation of mass</u></em>
Mass= 314.96 grams(or 315 grams)
Note: Always makes same units before solving the question. You can not determine the mass if Volume is in mL and Density is in g/cm3. Change mL into cm3 first
<span>The expected results of the Rutherford's gold foil experiment were that the relative massive alpha particles (respect to electrons) could go through the gold foil without being deviated of their trajectory or only small deviations due to the uniformly distributed positive charge of the protons. The real results showed that some particles were significantly deviated of the trajectory (large deviation angles and even some particles bounced back to the source). This lead Rutherford to reject the plum pudding model and propose a new one. The new model proposed by Rutherford was that the atom consisted of a small and every dense nucleus (which contained the positive charge, protons) and a vast region, almost empty, but where the electrons were, surrounding the nucleus.</span><span />
Answer:
Anhydrous calcium nitrate reaction with water is highly endothermic
Inert electrode i would say
