Answer:
The reaction between methane and oxygen to yield carbon dioxide and water (shown at bottom) may be represented by a chemical equation using formulas (top).
Explanation:
The substances undergoing reaction are called reactants, and their formulas are placed on the left side of the equation.
The substances generated by the reaction are called products, and their formulas are placed on the right sight of the equation.
Plus signs (+) separate individual reactant and product formulas, and an arrow (⟶) separates the reactant and product (left and right) sides of the equation.
The relative numbers of reactant and product species are represented by coefficients (numbers placed immediately to the left of each formula). A coefficient of 1 is typically omitted.
Answer:
Sulfur's atomic number is 16, meaning it has 16 protons and 16 electrons. This also rules out the statement "it has 17 neutrons". This also rules out the second statement "it has more electrons than argon". Argon's atomic number is 18, telling us it has 18 electrons and 18 protons. Of course, 16 is less than 18, so argon has more. Sulfur's atomic symbol is S, not Su, which doesn't even represent an element at all. This leaves us with the last statement "it has 6 electrons on its third energy level." This is true, as Sulfur does indeed have 6 electrons filling its third energy level.
Answer:
22×10⁻¹³
Explanation:
Scientific notation:
Scientific notation is the way to express the large value in short form.
The number in scientific notation have two parts.
The digits (decimal point will place after first digit)
× 10 ( the power which put the decimal point where it should be)
for example the number 6324.4 in scientific notation will be written as = 6.3244 × 10³
When we multiply or divide the values the number of significant figures must be equal to the less number of significant figures in given value. Thus, in given value,
(4.1357× 10⁻¹⁵) × (5.4×10²)
22×10⁻¹³
Answer:
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