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coldgirl [10]
3 years ago
10

What type of compound is Sodium hydroxide? A.acid B.base C.element D.salt

Chemistry
2 answers:
ollegr [7]3 years ago
6 0

Answer: B: Base

Explanation: I took the test

morpeh [17]3 years ago
3 0
The answer is B
b base
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A metal, M, forms an oxide compound with the
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Group 1

Explanation: because the compound has a formula of M2O , the number of valence electrons of M should be 1.

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How many grams of CaCl 2 are in .48 moles ?
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What is the solubility of Na2HAsO4 at 60 degrees C
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3 years ago
An airplane travels 2100 km at 1000km/hE. It encounters a wind and slows to 800 km/h E for the next 1300 km. What is the average
Deffense [45]

Answer:

The average velocity of the airplane for this trip is 1684.21 km/h

Explanation:

Average velocity is the rate of change of displacement with time. That is,

Average velocity = \frac{Displacement }{Change in time} = Δx / Δt = \frac{x2 - x1}{t2 - t1}

Now we will calculate the time taken by the airplane for the first motion before it encounters a wind.

From,

Velocity = \frac{Distance traveled}{Time taken}

Time = \frac{Distance traveled}{Velocity}

Therefore, Time = \frac{2100km }{1000km/h}

Time = 2.1h

This is the time taken before the airplane encounters a wind.

Hence, t1 = 2.1h

Now, For the time taken by the airplane when it encounters a wind

Also from,

Velocity = \frac{Distance traveled}{Time taken}

Time = \frac{Distance traveled}{Velocity}

Therefore, Time = \frac{1300km }{800km/h}

Time = 1.625h

Hence, t2 = 1.625h

Now, to calculate the average velocity

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Hence, Average velocity = \frac{1300 - 2100}{1.625 - 2.1}

Average velocity = 1684.21 km/h

7 0
3 years ago
When particles are removed volume will do what
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Volume will decrease over time, the more particles removed, is making the volume decrease. 
7 0
3 years ago
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