Determine si son ciertas o falsas estas afirmaciones; si al-
guna es falsa, corríjala de modo que sea verdad: (a) el nú-
cleo tiene la mayor parte de la masa y ocupa la mayor
parte del volumen de un átomo; (b) todos los átomos de
un elemento dado tienen el mismo número de protones;
(c) el número de electrones de un átomo es igual al núme-
ro de neutrones de ese átomo; (d) los protones del núcleo
del átomo de helio se mantienen unidos por una fuerza
llamada fuerza nuclear fuerte.
Answers: 1
Chemistry, 22.06.2019 05:00
Choose all the answers that apply. ionic compounds dissolve easily in water do not dissolve in water have low melting points have high melting points conduct electricity when melted
Answers: 1
Chemistry, 22.06.2019 07:00
What effect does a decrease in temperature have on the overall rate of a chemical reaction? a decrease in temperature decreases . the reaction rate will
Answers: 1
Chemistry, 22.06.2019 12:20
The yearly amounts of carbon emissions from cars in belgium are normally distributed with a mean of 13.9 gigagrams per year and a standard deviation of 5.8 gigagrams per year. find the probability that the amount of carbon emissions from cars in belgium for a randomly selected year are between 11.5 gigagrams and 14.0 gigagrams per year. a. 0.340 b. 0.660 c. 0.167 d. 0.397
Answers: 2
Chemistry, 22.06.2019 23:30
The density of the solid phase of a substance is 0.90 g/cm3 and the density of the liquid phase is 1.0 g/cm3. a large increase in pressure will a. lower the freezing point b. raise the freezing point c. lower the boiling point d. raise the triple point e. lower the triple point
Answers: 1
Determine si son ciertas o falsas estas afirmaciones; si al-
guna es falsa, corríjala de modo que s...
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