Answer:
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Out of the given calibrated glass wares, the 25 mL graduated cylinder can most accurately measure the volume to the nearest tenths of the millimeter. This is because the graduation of the glassware will be to the 1 mL allowing accurate measurement of milliliter.
The sample that is most likely going to undergo the smallest temperature change is 50 GRAMS OF WATER.
This is because, water has a relatively higher specific heat capacity compared to lead and the higher the volume of the water, the higher will be the specific heat of the water. The specific heat capacity of a substance refers to the amount of energy needed to change the temperature of 1 kg of the substance by one degree Celsius.
Answer:
13
Explanation:
There are 13 moles O in a mole of Ca5(PO4)3OH because there are 13 oxygen atoms in every molecule of Ca5(PO4)3OH. Convert moles oxygen to number of atoms of oxygen. One mole is 6.022*10^23, so your conversion factor would be 6.022*10^23 atoms O/mol O.
Answer:
Hydrogen Gas
Explanation:
The hydrogen gas now in the test tube is flammable. So when I hold the tube over the flame, the hydrogen gas ignites and creates a popping sound. It is like a tiny bomb or fireworks.
Hope this helped! :)
