As common sense dictates, Mohs Scale is based on the fact that a harder material will scratch a softer one. By using a simple scratch test, you can determine the relative hardness of an unknown mineral.
Answer:
The correct answer is : 44 dollars.
Explanation:
A quarter is one fourth of a dollar that is the reason it is known as quarter. A quarter is 25 cents or 0.25 dollar in value. If Matthew has 176 quarters in his jar than the value of the total coins would be:
1 quarter = 0.25 dollar
1 quarter = 1/4 dollar.
4 quarter = 1 dollar
then, 176 / 4 = x dollar
= 44 dollar
Thus, The correct answer is : 44 dollars.
The molarity of a Ba(OH)2 solution required to prepare a1.0 OH- solution is calculated as follows
write the equation for dissociation of Ba(Oh)2
that is,
Ba(Oh)2 -----> Ba^2+ + 2Oh-
by use of reacting ratio between Ba(Oh)2 to Oh which is 1:2 the molarity of Ba(oh)2 = 1.0/2 = 0.5 M
Answer: 596 atm
Explanation:
Given that,
Original pressure of balloon P1 = 3atm
Original temperature of balloon T1 = 298K
New pressure of balloon P2 = 6atm
New temperature of balloon T2 = ?
Since pressure and temperature are given while volume is constant, apply the formula for Pressure law
P1/T1 = P2/T2
3 atm / 298K = 6 atm / T2
To get the value of T2, cross multiply
3 atm x T2 = 6 atm x 298K
3 atmT2 = 1788 atmK
Divide both sides by 3 atm
3 atmT2 / 3 atm = 1788 atmK / 3 atm
T2 = 596 atm
Thus, a temperature of 596 atmospheres is required to increase the pressure to 6 atm.
The purpose of this experiment is to demonstrate the relationship between pressure and volume. Pulling the plunger back increases the volume of the gas in the syringe thereby increasing the size of the marshmallow but pressure is reduced. The relationship to be demonstrated is that pressure and volume have an inverse relationship.
