Answer:
it's a metel
Explanation:
as far as it can conduct electricity.
it's not a metal if it can't except it it's a metalloids
0.1324 ×10^24 atoms of carbon are in 2.65 g of carbon
Explanation:
Converting the grams of carbon to the moles of carbon.
Divide the mass (2.65 g) by 12.011 g/mol which is the molecular weight of carbon,
2.65 g / 12.011 g/mol=0.220 moles of carbon
Then, convert moles of carbon to atoms of carbon using Avogadro's constant (6.022×10^23 atoms per mole)
0.220 moles × 6.022×10^23 atoms / 1 mole = 0.1324 ×10^24 atoms
0.1324 ×10^24 atoms of carbon are in 2.65 g of carbon
Answer:
C₅H₈NO₄Na
Explanation:
Step 1: Given data
- Percentage by mass of Na in MSG: 13.6%
- Percentage by mass of C in MSG: 35.5%
- Percentage by mass of H in MSG: 4.8%
- Percentage by mass of N in MSG: 8.3%
- Percentage by mass of O in MSG: 37.8%
Step 2: Divide each percentage by the atomic mass of the element
Na: 13.6/22.99 = 0.592
C: 35.5/12.01 = 2.96
H: 4.8/1.01 = 4.75
N: 8.3/14.00 = 0.592
O: 37.8/16.00 = 2.36
Step 3: Divide all the number by the smallest one, i.e. 0.592
Na: 0.592/0.592 = 1
C: 2.96/0.592 = 5
H: 4.75/0.592 ≈ 8
N: 0.592/0.592 = 1
O: 2.36/0.592 ≈ 4
The empirical formula of MSG is C₅H₈NO₄Na.
Coal
Coal is a sedimentary rock that is made from mostly plant debris. This debris is usually formed in a swampy environment and is usually mined and used for fuel! Hope this helps!
Answer:
4. Another element is formed with greater atomic number
Explanation:
Ions only have a different amount of electrons and have the same amount of protons and neutrons.
Isotopes only have a difference in neutrons.
However, only a difference in protons will make another element.
Hence, 4 is the answer.
Hope this helped!