Answer:
Organism best adapted to the environment are able to survive in nature!
Explanation:
Suppose there was a green forest but after a volcano eruption all the green colored vegetation is lost and the area turns black . Now some organisms did survive...you have a black rat, and a white rat. You also have vultures flying in sky looking for prey. Overtime, the organism best adapted to environment can reproduce more and survive in nature. In our example, the black rats are the best adapted because their color matches with the environment so the eagles or vultures would have a hard time spotting them, whereas, a white rat in a black environment can be easily spotted so it has less adaptation to the nature.
Answer:
Explanation:
We are asked to find the new temperature of a gas after a change in volume. We will use Charles's Law, which states the volume of a gas is directly proportional to the temperature. The formula for this law is:
The volume is initially 52.3 liters at a temperature of 273 Kelvin.
The volume reaches 145.7 liters at an unknown temperature.
We are solving for the new temperature, so we must isolate the variable T₂. Cross multiply. Multiply the first numerator and second denominator, then the first denominator and second numerator.
Now the variable is being multiplied by 52.3 liters. The inverse of multiplication is division. Divide both sides by 52.3 L.
The units of liters cancel.
The original measurements have at least 3 significant figures, so our answer must have 3. For the number we found, that is the ones place. The 5 in the tenths place tells us to round the 0 up to a 1.
When the volume reaches 145.7 liters, the temperature is <u>761 Kelvin.</u>
All acids contain OH in their formula
Answer:
(b) 1 equivalent
Step-by-step explanation:
Concentration is the relative amount of a substance in a given volume or mass of something else.
An equivalent is not a concentration, because it is just a mass —the mass of a substance needed to react with or supply one gram of hydrogen.
(a) is <em>wrong</em>. 1 M means that there is 1 mol of a substance in 1 L of solution.
(c) is <em>wrong</em>. 1 % by mass that there is 1 g of a substance in 100 g of the mixture.
(d) is <em>wrong</em>. 1 m means that there is 1 mol of a substance in 1 kg of solvent.
The trends and exceptions to the trends in electron affinity;
- Elements in Group 14 have larger (more negative) electron affinities than elements in Group 15.
- Elements in Group 2 have very large electron affinities.
Explanation:
Electron affinity can be defined as the tendency of a neutral atom to pick an additional electron to its orbital shell. The smaller the atomic radius of an atom, the higher the electron affinity and the less energy is expended in adding an electron to it. This is because the smaller the atomic radius, the stronger the attraction by the nucleus even to its outermost shell. This means less energy is required to add the electron the smaller the atomic radius.
Therefore, electron affinity increases to the right of a period and decreases down a group in the periodic table.
Learn More:
For more on electron affinity check out;
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