Answer:
3.900 km/min
7.677 × 10⁵ ft/h
Explanation:
Step 1: Given data
Speed of the object (s): 6500. cm/s
Step 2: Convert "s" to km/min
We will use the following conversion factors.
6500. cm/s × (1 km/10⁵ cm) × (60 s/1 min) = 3.900 km/min
Step 3: Convert "s" to ft/h
We will use the following conversion factors.
3.900 km/min × (3280.84 ft/1 km) × (60 min/1 h) = 7.677 × 10⁵ ft/h
<h3><u>Answer;</u></h3>
pH = 9.55
<h3><u>Explanation;</u></h3>
[NH3] = 2.0 mmol/20.0 mL = 0.100 M
[NH4+] = 1.00 mmol/20.0 mL = 0.0500 M
Ka = (1.0 × 10^-14)/(1.8 × 10^-5)
= 5.56 × 10^-10
pKa = log Ka = 9.25
pH = pKa + log ([base]/[acid])
= 9.25 + log (0.100/0.0500)
<u>= 9.55</u>
A dipole-dipole interaction is a force of attraction between slightly positive hydrogen on one molecule and a slightly negative atomon another molecule while ion-dipole interaction is force between an ion and a polar molecule
Answer:
the answer you have marked is correct.
C is correct.