Answer:
it's option c
Explanation:
because if I'm not wrong I have learned these type of questions back 11 and I remember that rutherfords observation was few alpha particles were deflected by small angles.
Answer:
The value is 
Explanation:
From the question we are told that
The molar mass of 
is 
The total mass is 
The uncertainty of the total mass is 
Generally the molar weight of calcium is 
The percentage of calcium in calcite is mathematically represented as
Generally the mass of each sample is mathematically represented as
Generally mass of calcium present in a single sample is mathematically represented as
The uncertainty of mass of a single sample is mathematically represented as
The uncertainty of mass of calcium in a single sample is mathematically represent
Generally the average mass of calcium in each sample is
Answer: option <span>C. the total energy inside the calorimeter will decrease.
</span>
Justification:
The answer is a direct application of the first law of thermodynamic (the law of conservation of energy).
By telling that the t<span>he calorimeter is sealed so that there is no heat exchanged between the contents of the container and the surrounding air, the first law of thermodynamics implies that the total energy inside the calorimeter will not change.
</span>
<span>That statement, without adding any more is enough justification.
</span>
Regarding, the other statements, you can show they are true:
<span>A.
the thermometer will show an increase in temperature.
</span><span>
</span><span>
</span><span>Since the reaction is exothermic, the heat released will increase the temperature inside the sealed calorimeter,which, of course, is shown by the termometer.
</span><span>
</span><span>
</span><span>
</span><span>B. The potential
energy of the products will be lower than that of the reactants.
</span><span>
</span><span>
</span><span>In any exothermic reaction, the potential energy of the products is lower than that of the reactants, because the heat released is lost by the reactants when they react and transform into the products.
</span><span>
</span><span>
</span><span>D. The water
increases in temperature as the reaction gives off heat</span>.
Sure. The heat cannot leave the sealed calorimeter, but the water inside the calorimeter will absorb that heat: the molecules of water will gain kinetic energy and so its temperature will be increase.
Kinda blurry can’t see it
