Parenthises
Exponent
Multiply
Divide
Add
Subtract
The answer is true because it comes before subtraction in the phrase PEMDAS.
Answer:
Option B is the correct answer
Step-by-step explanation:
Hope it helps you in your learning process.
Answer:
1.6x10^-18 gram
Step-by-step explanation:
(5.3 x 10⁻²³ gram/molecule) x (20,000 molecule)
= (5.3 x 10⁻²³ x 2 x 10⁴) gram
= (10.6 x 10⁻²³⁺⁴) gram
= (1.06 x 10⁻²³⁺⁵) gram
= 1.06 x 10⁻¹⁸ gram
We need to find the mass of 20,000 molecules of oxygen. It can be calculated using unitary method. Here, we can multiply 20,000 molecules by the mass of one oxygen molecule.
Answer:
Step-by-step explanation:
Given 10.43, you can 'estimate' it only by rounding off:
10.43 to the nearest tenth is 10.4.
10.43 to the nearest whole number is 10; we drop the fraction 0.43.
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