Answer:
14. the metal is tin which it density is equal 7.3g/cm^3
Answer:
on the right side of the equation and are called products
Explanation:
Reactants are on the left side of the equation. When reactants react, they give products.
Products formed are at the right side of the equation.
They are directed as reactant to product using an arrow pointing towards the products.
New substances formed are called products. Several By-Products can also be formed . They are also on the right hand side.
Answer:
3) neutrons and protons
Explanation:
I just completed Grade 11 Chemistry with a 97% and I'm still under the impression that all atoms have only neutrons and protons in their nuclui.
I apologize if this is a question above my current education.
D.
Enzymes reduce the activation energies of biological reactions.
Answer:
1540.8 Joules of energy is required to bring a 30 gram crayon from room temperature, 25 degrees C, to its melting point 49 degrees C
Explanation:
Crayon is paraffin wax. The specific heat of paraffin wax is 2.14 J/g°C
As we know

Where
is the change in temperature 
m is the mass of the object
c is the specific heat in J/g°C
Substituting the given values, we get -
Joules
1540.8 Joules of energy is required to bring a 30 gram crayon from room temperature, 25 degrees C, to its melting point 49 degrees C