Answer:
D
Explanation:
The source of the thermal energy in a combustion engine is the spark from the spark plug that ignites the fuel and air mixture converting chemical energy into thermal energy.
Answer:
O.1M
Explanation:
First let's generate a balanced equation for the reaction
NaOH + HCl —>NaCl + H2O
From the equation,
The ratio of the acid to base is 1:1.
From the question, we obtained the following:
Ma = Molarity of acid = 0.12M
Va = volume of acid = 21.35cm3
Vb = volume of base = 25.55cm3
Mb = Molarity of base =?
We obtained nA(mole of acid) and nB(mole of base) to be 1
The molarity of the base can be calculated for using:
MaVa/ MbVb = nA / nB
0.12x21.35 / Mb x 25.55 = 1
Cross multiply to express in linear form
Mb x 25.55 = 0.12x21.35
Divide both side by 25.55
Mb = (0.12x21.35) / 25.55
Mb = 0.1M
The molarity of the base is 0.1M
<span>When energy is used, ATP molecules convert to ADP molecules. This process is called "Phosphorylation." </span>Phosphorylation is the addition of a phosphate (PO4) group to a protein or other organic molecule. A phosphate bond joins adenosine diphosphate to form adenosine triphosphate.
Answer:
Yes
Explanation:
A single covalent bond forms when two atoms share one pair of electrons.
Covalent bonds are formed between two or more atoms having zero or very small electronegativity difference. Such bonds exists between molecules of non-metals.
- To form a covalent bond, each of the two participating atoms would put down an unpaired electron.
- The unpaired electrons form a shared pair of electrons between them.
- This shared pair of electrons constitutes the electron cloud that binds the two atoms together.
- The shared pair of electron is the covalent bond.
Answer:
The answer to your question is Q = 640.5 J
Explanation:
Data
Volume of water = 15 ml
density of water = 1 g/ml
Temperature 1 = T1 = 25°C
Temperature 2= T2 = 35.2°C
Specific heat = 4.186 J/g°C
Process
1.- Calculate the mass of water
Mass = density x volume
= 1 x 15
= 15 g
2.- Substitution
Q = mC(T2 - T1)
Q = 15(4.186)(35.2 - 25)
-Simplification
Q = 15(4.186)(10.2)
-Result
Q = 640.5 J