Answer : C
Explanation:
a star produces energy by combining two atoms into one creates a powerful burst of energy
Answer:
1) Redox reaction
2) none of the above
3) none of the above
4) precipitation
5) acid-base neutralization
Explanation:
(1) Ba(ClO3)2(s)--->BaCl2(s) + 3O2(g)
In this reaction a single reactant produces (two or more)products which is a decomposition reaction.
But This is also a redox reaction, because Cl is reduced from
and Oxygen is oxidized . The answer is <u>redox.</u>
(2) 2NaCl(aq) + K2S(aq)--->Na2S(aq) + 2KCl(aq)
This reaction gives no insoluble precipitatwhich means, no reaction, despite the fact that it looks like a double replacement reaction. So the answer is <u>none of the above.</u>
(3) CaO(s) + CO2(g)--->CaCO3(s)
This is a synthesis (or combination) reaction where two or more reactants are formed out of 1 single product. <u>So none of the above.</u>
(4) KOH(aq) + AgCl(aq)---->KCl(aq) + AgOH(s)
This is a double decomposition reaction, also called a <u>precipitation</u> reaction, where two soluble salts react to form an insoluble salt and a soluble salt.
(5) Ba(OH)2(aq) + 2HNO2(aq)--->Ba(NO2)2(aq) + 2H2O(l)
An acid and a base react to form water and a salt and involves the combination of H+ ions and OH- ions to generate water.
This is a double replacement or <u>acid/base reaction.</u>
The answer is AgCl or Silver Chloride. Silver chloride is a biological compound with the chemical formula of AgCl. This white crystal-like rock-solid is well recognized for its little solubility in water. Upon light or heating, silver chloride transforms to silver (and chlorine), which is gestured by greyish or purplish coloring to other samples.
The answers alphabet is B
"<span>B. Selective breeding is driven by humans, while natural selection is driven by the environment" is true. Favorable traits are selected in both cases, but for different reasons. </span>
