Q=mCdeltaT
Q=(640)(0.09)(375-26)
Q=20102.4J
<u>Answer</u>:
If beaker tongs are not available, we could use crucible tongs to handle the hot beaker
<u>Explanation</u>:
Crucible tongs is tool shaped like a scissor where instead of two blades, two pincers or pieces of metals that concave together is used. They help us to hold or grasp a hot beakers, flasks or even small beakers. It is difficult for the people to catch or hold the hot beakers directly. So crucible tongs plays a vital role when burning, or using hot objects in the chemical laboratory.Crucible tongs are generally made with strong metal such as nickel, stainless or oxidized steel so as to withstand very high and extreme temperatures.
Yes, it acts according to non-polar properties, although it is soluble in certain polar substances.
<span>The periodic table of elements is ordered by atomic weight from the top left to the bottom right. Each column is assigned a group, they can be either A groups or B groups. To determine the lightest element in the 1A group, locate the 1A column, at look at the top most element. In this case, H, hydrogen.</span>
Answer:
The correct answer is due to the difference in pressure inside and outside the bottle.
Explanation:
Liquids have melting and boiling points that depend on pressure and temperature. The pressure inside the bottle is higher than the pressure outside. This causes the melting point to drop, making the liquid freeze at a lower temperature than if it were at atmospheric pressure, and therefore has a lower temperature than it would freeze at atmospheric pressure. When the bottle is uncovered, the liquid becomes an atmospheric pressure, and due to the temperature acquired when the bottle was closed the liquid freezes.
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