Answer:
4 hours and 30 minutes
Explanation: because first wave was 1:30:00 and the second is 1:34:30
1:30:00 goes into 1:34:30 4 hours and 30 minutes.
Answer:
In 7.80 g of styrene, we have 3.60×10²³ atoms of H
Explanation:
Empirical formula of styrene is CH
Molecular formula of styrene is C₈H₈
So, 1 mol of styrene has 8 moles of C and 8 moles of H and 1 mol weighs 104.14 grams. Let's make a rule of three:
104.14 g (1 mol of C₈H₈) have 8 moles of H
Then 7.80 g would have ( 7.80 .8) / 104.14 = 0.599 moles
As we know, 1 mol of anything has NA particles (Avogadro's Number, 6.02×10²³), so 0.599 moles will have (mol . NA) particles
0.599 mol . 6.02×10²³ atoms / 1 mol = 3.60×10²³ atoms
Answer:
1. An air mass is a body of air with a mostly constant moisture and temperature over a significant altitude. Air masses usually cover up to millions of square kilometers. A front is the boundary where two air masses with different temperature and moisture meet.
2. A cold front most likely came through because briefly stormy weather will be warmer and moister than a cold front would.
3. The water cycle is responsible for the rain, snow, and ice that falls. It also affects the wind, so it will all affect the weather.
Explanation:
I hope I did this right. Hope it helps
Oxygen gas enters water through Diffusion (movement of gas from higher concentration to lower concentration). The amount of oxygen in water depends on many factors. Like at Higher temperature there will be less amount of Oxygen in water and vice versa. And it is found that at 0 °C, 14.6 mg/L and at 20 °C, 7.6 mg/L dissolves.
The interactions between Water Molecule and Oxygen Molecule are London Dispersion Forces. The polar water molecule induces the polarity in oxygen molecule. In this way the oxygen gas is available in water.
