Answer:
a substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change
Chemical properties of arsenic - Health effects of arsenic - Environmental effects of arsenic
Atomic number33Atomic mass74.9216 g.mol -1Electronegativity according to Pauling2.0Density5.7 g.cm-3 at 14°CMelting point814 °C (36 atm
Answer: B) Ten moles of sodium hydroxide and five moles of hydrogen gas will be produced
Explanation: Got it right on USATestPrep
Answer:
a. single replacement
Explanation:
Chemical equation:
Cd + H₂SO₄ → CdSO₄ + H₂
In given reaction Cd replace the hydrogen and form cadmium sulfate and hydrogen gas.
Single replacement:
It is the reaction in which one elements replace the other element in compound.
AB + C → AC + B
Other options are incorrect because,
Combustion:
In combustion reaction substances are burn in the presence of oxygen and form carbon dioxide and water.
Synthesis reaction:
It is the reaction in which two or more simple substance react to give one or more complex product.
A + B → AB
Double replacement:
It is the reaction in which two compound exchange their ions and form new compounds.
AB + CD → AC +BD
Explanation:
The danger zone is= that people within the danger zone cannot freely enter and exit this region. school activities are closed, economic activities are stopped, worship activities are also closed.
why it is important to safe food preparation= stocking food when the danger zone is important. because in the danger zone, people are limited to activities outside the home.
