Answer:
Sodium
Hydrogen
Carbon
Oxygen
Explanation:
Formula of baking soda is NaHCO₃. It is the salt consist of sodium (Na⁺) cation and bicarbonate (HCO₃⁻) anion. It is also called sodium hydrogen carbonate. It is crystalline white solid.
Elements in baking soda:
Sodium:
Sodium is present in third period and group one of periodic table. It is eleventh element of periodic table. It is alkali metal and lose one valance electron thus carry +1 charge.
Hydrogen:
It is first element of periodic table. Its atomic number is one and mass is 1.008 g/mol. It can lose its one electron and has +1 charge.
Carbon:
It is present in the group fourteen of periodic table. It can lose its four valance electrons and form four covalent bonds. Its atomic number is six and atomic weight is twelve.
Oxygen:
It is the eighth element of periodic table. It is present in group sixteen and second period of periodic table. It has six valance electrons. It is also called chalcogen because it is ore forming element.
The specific heat for the titanium metal is 0.524 J/g°C. Here, ΔT = T₂ - T₁ = 45.4 - 20 = 25.4°C.
Explanation:
Given,
Q = 1.68 kJ = 1680 Joules
mass = 126 grams
T₁ = 20°C
T₂ = 45.4°C
The specific heat for the metal can be calculated by using the formula
Q = (mass) (ΔT) (Cp)
Here, ΔT = T₂ - T₁ = 45.4 - 20 = 25.4°C.
Substituting values,
1680 = (126)(25.4)(Cp)
By solving,
Cp = 0.524 J/g°C.
The specific heat for the titanium metal is 0.524 J/g°C.
Answer:
B. observing that a bone placed in a beaker of acid becomes bendy
Explanation:
The hypothesis suggests that when chicken bones are placed in vinegar, they become bendy due to the loss of calcium in their bones.
Calcium is identified as the ossifying material that strengthens the bone. When the acid that makes up the vinegar comes in contact with it, calcium is removed from the bone.
Now we know that calcium has capabilities of reacting with acids.
This suggests that if we also place the bone in an acid, they will bend due to reaction of calcium in the bones with the acid.