Answer:D the pressure increases
Explanation:
[H+][OH-] = 1x10-14 = Kw (Memorize this relationship)
(2.70x10-2)[OH-] = 1x10-14
[OH-] = 1x10-14/2.70x10-2
[OH-] = 3.70x10-13 M (assuming you ignore the autoionization of H2O)
Answer:
53.2 mL
Explanation:
As this problem deals with the neutralization of a strong monoprotic acid and a strong base, we can solve it by using the following formula:
Where in this case:
We <u>input the data</u>:
- 0.230 M * 74.0 mL = 0.320 M * Vb
And <u>solve for Vb</u>:
The relation between T1 and T2 is T1= T2.
when 200 mL are mixed so, we will have twice the number of moles of water
and twice as much heat will be released this has to heat twice of the mass of the
water, so the temperature rises as the same
Answer:
7g/cm³
Explanation:
Given parameters:
Mass of the mineral = 21g
Volume = 3cm³
Unknown:
Density of the mineral = ?
Solution:
Density of a substance is the mass per unit volume of the substance.
Density =
Now insert the given parameters and solve;
Density = = 7g/cm³
The mineral with a density of 7g/cm³ is Galena, an ore of lead.