The number of significant figures in each of the following numbers are as follows:
- 640 cm³ - number of significant figures: 2
- 200.0 mL - number of significant figures: 4
- 0.5200 g - number of significant figures: 4
- 1.005 kg - number of significant Figures: 4
- 10,000 L - number of significant figures: 1
- 20.900 cm - number of significant figures: 5
<h3>What is significant figures?</h3>
Significant figures are those figures that are meaningful with respect to the precision of a measurement.
In other words, a digit that is nonzero, followed by a nonzero digit,or (for trailing zeroes) justified by the precision of the derivation or measurement is a significant figure.
Based on the question, the number of significant figures in each of the following numbers are as follows:
- 640 cm³ - number of significant figures: 2
- 200.0 mL - number of significant figures: 4
- 0.5200 g - number of significant figures: 4
- 1.005 kg - number of significant figures: 4
- 10,000 L - number of significant figures: 1
- 20.900 cm - number of significant figures: 5
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Answer:
0.40 g/cm3
Explanation:
density = mass / volume.
mass = 65.2 grams
volume = 10*1.1*15=165 cm3
so density = 65.2/165=0.40 g/cm3
Answer:
The acid reacts with the conjugate base producing more weak acid.
Explanation:
A buffer solution is defined as the mixture of a weak acid and its conjugate base or a weak base with its conjugate acid.
The acetic buffer, CH₃COOH/CH₃COO⁻, is in equilibrium with water as follows:
CH₃COOH(aq) + H₂O(l) ⇄ CH₃COO⁻(aq) + H₃O⁺
When an acid HX (Source of H₃O⁺) is added to the buffer, the reaction that occurs is:
CH₃COO⁻ + HX → CH₃COOH
<h3>The acid reacts with the conjugate base producing more weak acid.</h3>
In fact, this is the principle of the buffer:
An acid reacts with the conjugate base producing weak acid. And the weak acid reacts with a base producing conjugate base
Answer:
More common near convergent boundaries
Explosive Eruptions
Low Viscosity Magma
Explanation:
Hot spots like hawaii are better known for shield volcanoes. The magma is high viscosity which causes them to build pressure before erupting, leading to explosive eruptions.
