Answer:
It is considered an ionic compound since it is composed of the magnesium cation (Mg2+) and two hydroxide anions (OH-). There are no covalently shared electrons here. ... The reaction of the hydroxide anions with acid causes more of the magnesium hydroxide to dissolve until all of the acid has been neutralized.
When a molecule loses or gains an electron it becomes an ion.
"If it gains a negative electron, it becomes a negative ion. If it loses an electron it becomes a positive ion."
It has 49 electrons as well. The amount of protons and electrons are equal.
Explanation:
Mutations on DNA create genetic variation and diversity on which natural selection acts upon. Mutation can be advantageous, disadvantageous or neutral. Those mutations that confer advantage are preserved in the population while those that are DISadvantageous are weeded out. This occurs because advantageous traits that give a particular advantage to individuals in the environment, however slightest, give them an increased chance of survival and passing their genes to subsequent generations.
An example is mutation that causes sickle cell-shaped blood cells. Individuals with sickle cell blood are less likely to contract malaria. Therefore in an environment where malaria is endemic, the population will have a higher allele frequency for sickle cell alleles that populations in non-endemic areas.
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Answer:
The final temperature (in degrees Celsius) of the iron block is 85.82 °C
Explanation:
<u>Determine the heat emitted by the condensing water.</u>
qw = 0.88 g H2O
qw = -2.1492 kJ
<u>Determine the heat absorbed by the iron block</u>
qw = - qw = - (-2.1492 kJ) = 2.1492 kJ
<u>Look up the specific heat for iron. Use the specific heat equation to solve for the final temperature of the iron block.</u>
q = mcΔT
ΔT = q / mc
Temp f = (q / mc) + Temp i
Temp f = 2.1492 x 10^3 J / 75 g (0.449 J/g.°C) + 22 °C
Temp f = 85.82 °C