P*V=n*R*T (Pressure*Volume = mol * 0,082 (constant)* temperature )
175 kPa = 1,727 atm
V=275 ml = 0.275 liters
T=(P*V)/(n*R)=1,727*0.275/0.8*0.082=7,23 Kelvin.
Pure substances cannot be separated into any other kinds of matter while a mixture is a combination of two or more pure substances
A pure substance has constant physical and chemical properties while mixtures have varying physical and chemical properties
The atoms are different by prime difference lies in the fact that pure substances cannot by physically separated while mixtures can be (physical methods)
Here are some amazing environmental facts that you need to know about. 27,000 trees are cut down each day so we can have Toilet Paper. Aluminum can be recycled continuously, as in forever. ... We can save 75,000 trees if we recycled the paper used on the daily run of the New York Times alone.
Answer: its D
Explanation:
because the earth sun and moon are all lined up that will cause a solar eclipse.
Answer:
Explanation:
THE CORECT QUESTION
A 50.0 mL solution of 0.127 M KOH is titrated with 0.254 M HCl. Calculate the pH of the solution after the addition of each of the given amounts of HCl.
SOLUTION
Get the concentration of the HCl first using titration formula
CA X V A / CB VB = NA/ NB
Equation of reation; KOH + HCl => KCl + H2O
CA = 0.254 M
CB = 0.127
VA = 1/0.254 = 3.937
CA (after the addition) = 0.127 x 50 / 3.937
= 1.612 M
But pH = - Log[hydrogen ion]
= -log 1.612
=