Answer: New moon!
Explanation: So if your saying lunar eclips it would be new moon becuase we have full moons all the time that means lunar eclipses all the time soo it would be new moon
Answer:
22.22 g
Explanation:
The balanced reaction equation is;
Ca(s) + 2HCl(aq) → CaCl2(aq) + H2(g)
Number of moles of calcium reacted = 8.02g/40.1g/mol = 0.2 moles of Calcium
From the reaction equation;
1 mole of Ca yields 1 mole of CaCl2
Hence 0.2 moles of Ca also yields 0.2 moles of CaCl2
Mass of calcium chloride produced = number of moles * molar mass
Mass of calcium chloride = 0.2 moles of CaCl2 * 111.1g/mol = 22.22 g
The high pressure and the low temperatures are the two conditions, which can restrict the effectiveness of the kinetic-molecular theory in illustrating the behavior of the gas.
At high pressures or at low temperatures, the real gases deviate substantially from the ideal gas behavior. Due to this, the two conventions of the kinetic molecular theory, where gas particles hold an insignificant fraction of the entire volume of the gas, and the force of attraction among the molecules of gas is zero would become uncertain.
Answer: Option (d) is the correct answer.
Explanation:
It is known that length of a bond is inversely proportional to the bond strength. This also means that a single bond has long length due to which it is weak in nature.
And, a double bond is shorter in length and has more strength as compared to a single bond. Whereas a triple bond has the smallest length and it has high strength as compared to a double or single bond.
For example, carbon monoxide is CO where there is a triple bond between the carbon and oxygen atom.
Carbon dioxide is 
where there exists a double bond between the carbon and oxygen atom.
A carbonate ion is 
when two oxygen atoms are attached through single bond with the carbon atom and another oxygen atom is attached through a double bond to the carbon atom.
Hence, we can conclude that order of increasing bond strength of the given carbon oxygen bond is as follows.
Carbonate ion < carbon dioxide < carbon monoxide
"An advertisement for a commercial hand warmer claims that the hand warmer works because a chemical reaction in the hand warmer draws out the body’s own natural heat causing a warming effect"
Explanation:
Hand warmer
- Hand warmers are the pockets which produce heat, that you hold on the hands to warm your fingers.
- Niichi Matoba, the Japanese inventor created the first commercially manufactured hand warmer.
- Two types of hand warmers
A) Crystalline type
B) Air activated
C) Lighter
D) Battery
E) Charcoal
- The chemicals produce heat from oxidizing iron into rust or iron oxide in the pockets. Each packet contains cellulose, iron, vermiculite activated carbon, water and salt. Hand warmer produces heat for 1 to 10 hrs.
- Releases heat in the crystallization process. Exothermic reaction to release heat in the chemical hand warmer. The hand warmer lasts only for 20 minutes to 2 hrs.it Is reusable. Supersaturated solution of sodium acetate in water is the common chemical used in this product.
- These temperature reach up to 163 degrees Fahrenheit.
