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Ratling [72]
4 years ago
6

Answers for worksheet activity B

Chemistry
1 answer:
7nadin3 [17]4 years ago
5 0
Where is the picture??
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Joints can only be moveable.<br><br> True<br><br><br> False
oksano4ka [1.4K]

Answer:

TRue

Explanation:

4 0
3 years ago
Es la representación escrita de un cambio químico, se construye con simbología, la cual fue establecida para una mejor interpret
mart [117]
En un cambio físico, la naturaleza de la sustancia, las partículas que la componen y el número de partículas permanecen sin cambios.
En un cambio químico, las propiedades de las nuevas sustancias son diferentes de las originales, las partículas son diferentes y el número de partículas puede cambiar.
Si bien la distinción entre cambio físico y químico es útil, debería verse más como un continuo.
Las reacciones químicas pueden revertirse, pero esto puede resultar difícil en la práctica.
6 0
3 years ago
How old is a bone if it now .3125 of C-14 when it originally had 80.0g of C-14
Taya2010 [7]
<h3>Answer:</h3>

42960 years

<h3>Explanation:</h3>

<u>We are given;</u>

  • Remaining mass of C-14 in a bone is 0.3125 g
  • Original mass of C-14 on the bone is 80.0 g
  • Half life of C-14 is 5370 years

We are required to determine the age of the bone;

  • Using the formula;
  • Remaining mass = Original mass × 0.5^n , where n is the number of half lives.

Therefore;

0.3125 g = 80.0 g × 0.5^n

3.90625 × 10^-3 = 0.5^n

  • Introducing logarithm on both sides;

log 3.90625 × 10^-3 = n log 0.5

Solving for n

n = log 3.90625 × 10^-3 ÷ log 0.5

   = 8

  • Therefore, the number of half lives is 8
  • But, 1 half life is 5370 years
  • Therefore;

Age of the rock = 5370 years × 8

                          = 42960 years

Thus, the bone is 42960 years old

7 0
3 years ago
What is the total number of orbitals found in the second energy level?
erik [133]
Principal Energy Light  Type of sub level  Maximum number of electrons
                                       P                         8
2                                                                
                                       S                          18
3                                    
                                       P
Hope It really Helps
6 0
3 years ago
What is relationship between frequency and wavelength on a electromagnetic speptrum?
Shalnov [3]
That number, also known as the frequency, will be larger for a short-wavelength wave than for a long-wavelength wave. The equation<span> that relates wavelength and frequency for electromagnetic waves is: λν=c where </span>λ<span> is the wavelength, ν is the frequency and c is the speed of light.</span>
6 0
3 years ago
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