When javier touches a hot mug of tea, energy is transferred from the surface of the mug to his hand. what kind of energy is this?

nuclear

radiant

thermal

chemical

The correct answer to the question is : C) Thermal energy.

EXPLANATION:

Before coming into any conclusion, first we have to understand thermal energy and conduction.

The thermal energy of a body is the sum total of kinetic energy and potential energy of all of its molecules or atoms.

Whenever a body at high temperature is connected to a body at low temperature, the thermal energy will flow from body at high temperature to a body at low temperature. The part of thermal energy which is transferred due to temperature difference is called heat flow. This process is called conduction where there will be no actual transport of atoms or molecules from one body to another body.

As per the question, Javior touches the hut mug of tea. The mug surface is at high temperature as compared to Javior hand. Hence, heat flow be from mug surface to hand of Javior.

Hence, the correct answer to the question is thermal energy.

  1.the balanced   chemical equation is as below

cu +   2 ag(no)₃ → cu(no₃)₂   +2 ag

2.the   much silver   produced   is   50.9 g

step 1: find the   moles of cu

moles =   mass÷   molar mass

  from periodic table the molar mass of cu = 63.5 g/mol

moles is therefore = 15.00 g÷ 63.5 g/mol = 0.236   moles

step 2: use the mole ratio to determine the   moles of ag

from equation above   cu: ag   is 1: 2

therefore the moles of ag   =0.236   moles   x 2/1 =0.472   moles

step 3: find the mass   of ag

mass = moles x molar mass

from periodic table   the molar mass of ag =107.87 g/mol

mass   = 0.472   moles x 107.87 g/mol = 50.9 g

3.   the   much   silver   collected worth is   1.797 oz

  convert   50.9 g   to oz

that is   1 gram = 0.0353 oz

          50.9 grams =?   oz

by cross multiplication

={(50.9 grams x 0.0353 oz) / 1   gram}   =1.797 oz

probably not if net force is zero