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max2010maxim [7]
2 years ago
15

the first five ionization energies of a second period element are listed in the table above. which of the following correctly id

entifies the element and best explains the data in the table

Chemistry
1 answer:
mote1985 [20]2 years ago
5 0

Answer:

As for my own understanding. I think the answer I B= because it has three valence electron

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John and his wife are celebrating their first wedding anniversary. Their dinner consists of 55 grams of carbohydrates, 36 grams
nika2105 [10]

Answer: 733 kcal

Explanation:

According to a system used to calculate the available energy of foods, we have the following data:

  • protein has 4 kcal/g
  • carbohydrates has 4 kcal/g
  • fat has 9 kcal/g
  • alcohol has 7 kcal/g

So, we are told Jhon and his wife's dinner has:

  • 55 g of carbohydrates
  • 36 g of protein
  • 27 g of fat
  • 18 g of

Now we have to multiply these values by the kilocalories:

  • (55 g of carbohydrates)(4 kcal/g)=220 kcal  
  • (36 g of protein)(4 kcal/g)=144 kcal
  • (27 g of fat)(9 kcal/g)=243 kcal
  • (18 g of alcohol)(7 kcal/g)=126 kcal

Then we have to sum all, giving the following result:

<h2>733 kcal</h2>
4 0
4 years ago
How many valence electrons does alkali metals?
sergeinik [125]
Alkali Metals have 2 valence electrons
3 0
3 years ago
I NEED HELP WITH ASAP!!
ivann1987 [24]
C. <span>High temperatures make the gas molecules move more quickly.
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6 0
3 years ago
4) Calculate the percentage by<br> mass of oxygen in Pb(NO3)2<br> A) 193<br> B20<br> 145
Ierofanga [76]

Answer:

  im getting 331.23

Explanation:

Element Number Mass Percet Composition

O            6         16.00  28.9828819853274

N             2         14.01 8.45937867946744

Pb             1        207.21 62.5577393352051

5 0
3 years ago
What is a physical property of matter?
Sloan [31]

Answer:

a characteristic of matter that is not associated with a change in its chemical composition.

Explanation:

Physical properties of matter include color, hardness, malleability, solubility, electrical conductivity, density, melting point, and boiling point

3 0
3 years ago
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