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aleksley [76]
4 years ago
10

Which symbol represents an atom in the ground state with the most stable valence electron figuration

Chemistry
1 answer:
Vikki [24]4 years ago
3 0
The most stable electron configuration helium has.

He
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In the United States, barometric pressures a re generally reported in inches of mercury (in. Hg). On a beautiful summer day in C
Svetllana [295]

Answer:

773.43 torr

Explanation:

From the question given above, the following data were obtained:

Pressure (in inHg) = 30.45 inHg

Pressure (in torr) =?

We can convert 30.45 inHg to torr by doing the following:

1 inHg = 25.4 torr

Therefore,

30.45 inHg = 30.45 inHg × 25.4 torr / 1 inHg

30.45 inhg = 773.43 torr

Thus, 30.45 inhg is equivalent to 773.43 torr

7 0
3 years ago
3. The doctor notices that Janet has long fingernails, and comments that fingernails grow at a rate (or
Viktor [21]

Answer:

7.93 × 10⁻¹³ km/s

Explanation:

Step 1: Given data

Rate of growth of the fingernails (r): 2.50 cm/year

Step 2: Convert "r" from cm/year to km/year

We will use the following conversion factors.

  • 1 m = 100 cm
  • 1 km = 1000 m

\frac{2.50cm}{year} \times \frac{1m}{100cm} \times \frac{1km}{1000m} = 2.50 \times 10^{-5} km/year

Step 3: Convert "r" from km/year to km/s

We will use the following conversion factors.

  • 1 year = 365 day
  • 1 day = 24 h
  • 1 h = 60 min
  • 1 min = 60 s

\frac{2.50 \times 10^{-5} km}{year} \times \frac{1year}{365day} \times \frac{1day}{24h} \times \frac{1h}{60min} \times \frac{1min}{60s} = 7.93 \times 10^{-13} km/s

2.50 cm/year is equal to 7.93 × 10⁻¹³ kilometers/second.

6 0
3 years ago
Which element is more reactive? A) sulfur B) aluminum
Strike441 [17]
B aluminum is more reactive them sulfur!!
4 0
4 years ago
The Kelvin value of 40° C (Celsius) is 313.150 K. (Identify whether it is True or False)
Veronika [31]

Answer:

True

Explanation:

We want to find what 40° Celsius is equal to in Kelvin. The formula is below.

K= °C+ 273.15

Since we want to find Kelvin for 40° C, substitute 40 in for °C.

K= 40 +273.15

Add the two numbers together.

K= 313.15

The questions asks us if 40° C is equal to 313.150 K. Our answer is 313.15 K. Since 313.150 and 313.15 are equal, the answer is true.

8 0
4 years ago
Write a chemical reaction to show acidic nature of acetylene.​
VikaD [51]

Answer:

hope this helps

Explanation:

Acetylene shows acidic character because carbon is sp hybridized containing 50% s-character which makes –C-H bond highly acidic in nature. The acidic character of –C-H can be easily justified when heated with sodium metal which displaces hydrogen from acetylene forming sodium acetylide.

5 0
3 years ago
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