Answer:
It would take 3.11 J to warm 3.11 grams of gold
Explanation:
Step 1: Data given
Mass of gold = 3.11 grams
Temperature rise = 7.7 °C
Specific heat capacity of gold = 0.130 J/g°C
Step 2: Calculate the amount of energy
Q = m*c*ΔT
⇒ Q = the energy required (in Joules) = TO BE DETERMINED
⇒ m = the mass of gold = 3.11 grams
⇒ c = the specific heat of gold = 0.130 J/g°C
⇒ ΔT = The temperature rise = 7.7 °C
Q = 3.11 g * 0.130 J/g°C * 7.7 °C
Q = 3.11 J
It would take 3.11 J to warm 3.11 grams of gold
Answer:
NaClO₄
Solution:
Let us calculate the oxidation state of Chlorine in each compound one by one;
1) NaClO
O.N of Na = +1
O.N of O = -2
So,
(+1) + (Cl) + (-2) = 0
1 + Cl - 2 = 0
Cl = -1 + 2
Cl = +1
2) NaClO₃
(+1) + (Cl) + (-2)3 = 0
(+1) + (Cl) - 6 = 0
1 + Cl - 6 = 0
Cl = -1 + 6
Cl = +5
3) NaClO₂
(+1) + (Cl) + (-2)2 = 0
(+1) + (Cl) + (-4) = 0
1 + Cl - 4 = 0
Cl = -1 + 4
Cl = +3
4) NaClO₄
(+1) + (Cl) + (-2)4 = 0
(+1) + (Cl) + (-8) = 0
1 + Cl - 8 = 0
Cl = -1 + 8
Cl = +7
A)It is made of matter and contains twenty-four molecules.
B)It is an element made of three types of atoms.
C)It is an atom made up of carbon, hydrogen, and oxygen.
D)It is a compound made of twenty-four total atoms of three different elements.
Answer:
The correct answer is D)It is a compound made of twenty-four total atoms of three different elements
Explanation:
Glucose (C₆H₁₂O₆) is a molecule (not an atom neither an element, so the options B and C are not completely correct). It is composed by three different elements (oxygen: O, carbon: C and hydrogen: H), and it has twenty-four atoms in its molecule: (6 x C) + (12 x H) + (6 x O)= 24. So, the option D is the one that best describes glucose.
C) it is made up of carbon, hydrogen, and oxygen
D) it is a compound made of twenty-four total atoms of three different elements
they are both right but I would go with D