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2 years ago

Which of the following transition is considered the phase change from water to steam?

Chemistry

1 answer:

Alexandra [31]2 years ago

4 0

Answer:

the transition from water to steam is call evaporation.

Explanation:

water evaporates or vaporizes and turns into steam this typically happens when heat meets with the water. an example would be if you boil water steam will release from the pot, or when it rains, snows, etc (precipitation) the water evaporates and the ground dries.

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What is the mass of 0.100 mole of neon? (Watch sf’s) 2.018 g 20.18 g 2.02 g 2 g

makkiz [27]

Answer:

The mass of 0.100 mole of neon is 2.018 grams.

Explanation:

As we know the formula to find mass:

Number of moles = Mass/ Molar mass

0.100 = Mass/ 20.17

0.100 x 20.17 = Mass

Mass=2.018 grams.

Hope it helps!

7 0

2 years ago

What is the pH of a buffer that consists of 0.254 M CH3CH2COONa and 0.329 M CH3CH2COOH? Ka of propanoic acid, CH3CH2COOH is 1.3

Shtirlitz [24]

Answer:

4.77 is the pH of the given buffer .

Explanation:

To calculate the pH of acidic buffer, we use the equation given by Henderson Hasselbalch:

$pH=pK_a+\log(\frac{[salt]}{[acid]})$

$pH=-\log[K_a]+\log(\frac{[salt]}{[acid]})$

$pH=-\log[K_a]+\log(\frac{[CH_3CH_2COONa]}{[CH_3CH_2COOH]})$

We are given:

$K_a$ = Dissociation constant of propanoic acid = $1.3\times 10^{-5}$

$[CH_3CH_2COONa]=0.254 M$

$[CH_3CH_2COOH]=0.329 M$

pH = ?

Putting values in above equation, we get:

$pH=-\log[1.3\times 10^{-5}]+\log(\frac{[0.254 M]}{[0.329]})$

pH = 4.77

4.77 is the pH of the given buffer .

7 0

2 years ago

Construction crews sometimes use this reaction for welding underwater structures:

STALIN [3.7K]

It's 5.00 I just took it

8 0

3 years ago

Read 2 more answers

Which direction does the decimal move from mega meters to meters

Temka [501]

To solve this problem, let us first understand what does mega meters mean. Now by definition, mega means a factor of one million which is a unit prefix in Metric Systems of units. It is denoted by the unit symbol M.

So for example if we have a mega of something, it means a million of something. So in this case, if we have 1 mega meter, what it means is 1 million meter, which is written as:

1 mega meter = 1,000,000 meter

To show the decimal points:

1.0 mega meter = 1,000,000.0 meter

So we see that the decimal point move 6 zeroes to the right, therefore the direction is to the right.

Answer:

<span>6 places to the right</span>

7 0

3 years ago

1. Illustrate and describe the sequence in which ten electrons occupy the five

gladu [14]

10 electrons will occupy the five orbitals in the atoms d sub shell like this. Each electron fills one by one in each orbital. So first 1 electron will fill the first orbital, then the second will move on to the next and so on. So for example…if there were 7 electrons, the first two sub shells would be filled, and the other three would have one electron each

8 0

1 year ago