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Artyom0805 [142]
3 years ago
13

1. Define flash flood.

Chemistry
2 answers:
BigorU [14]3 years ago
7 0
A flash flood is when to much water overflows a certain area. This is common with storms. When it rains; small bridges tend to floor. Garages, basements, and cellars can tend to flood as well from storms.
sp2606 [1]3 years ago
6 0
In the time of severe weather with heavy rain, there is usually floods that happen really quickly and suddenly, known to be a flash flood. When extra water fills the empty water bed with flowing river, then suddenly water rapidly rises in a short amount of time.
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During a 4 hour trip, a boat sailed 70 km in 2 h. Then the boat did not move for 1 hour and traveled 26 km in the last hour. Wha
Lubov Fominskaja [6]

Answer:

32km/hr

Explanation:

The question asks to calculate the average speed for a boat.

Mathematically, the average speed is the total distance divided by the total time

Let’s get the total distance traveled:

That would be 70km + 26km = 96km

Now the total time taken would be 3 as the boat did not move at all for an hour.

The average speed is thus 96/3 = 32km/hr

7 0
3 years ago
What is the number of moles of NaOH in 16.5 mL of 0.750 Molar NaOH?
Alchen [17]

Answer:

0.0165 (L) * 0.750 (mol/L) = 0.0124 mol NaOH in 16.5 mL

Explanation:

5 0
3 years ago
Isotopes: are atoms of different elements which have the same mass are atoms of the same element with equal numbers of neutrons
koban [17]
I can't understand your option because there is no full stop however

isotopes are 2 or more form of elements that contain equal number of proton but different number of neutron in their nuclei
4 0
3 years ago
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a piece of wood sinks in ethanol but floats in gasoline. what can you determine about the three different densities?
lakkis [162]
Wood sinks in ethanol => wood has higher density than ethanol.
wood floats in gasoline=> wood has lower density than gasoline
4 0
3 years ago
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What is the molar mass of sodium carbonate (Na2CO3)?
madreJ [45]

Answer:

105.9888 g/mol

Explanation:

The molar mass of sodium carbonate is 105.9888 g/mol (grams per mole)

4 0
4 years ago
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