Answer:
Explanation: the tip of a growing plant contains special rapidly diving cells called apical meristem ,these cells are responsible for increase in the length of the plant . if we cut out these cells ,length growth of the plant will be stunned as these cells are not present anyplace else.
Answer:
Half-life time is 6s
Explanation:
A first order reaction follows the formula:
ln[A] = ln[A]₀ - kt
Thus, the graph of ln[A] vs t will have as slope -k.
Graphing the given values you will obtain the linear formula:
y = -0.1154x + 0.1994
R² = 0.9997
Thus, slope is -0.1154s⁻¹ and k is:
-k = -0.1154s⁻¹; <em>k = 0.1154</em>s⁻¹
Now, as half-life in a first order reaction is:
<em>Half-life time is 6s</em>
Answer:
0.65 M
Explanation:
Molarity (M) is the amount of moles of a substance per liter.
In other words, M = moles of substance / liters of solution
Since you're already given the moles of NaCl and the volume of the solution, you can plug those into the equation.
M = moles of NaCl / liters of solution
M = 1.5 mol NaCl / 2.3 L
M = 0.65 mol/L (or 0.65 M)
Answer:
2. Worm Y reproduces sexually, which gives it genetic variation.
Answer:
C-Its product is heavier than each of its reactants.
Explanation:
Correct equation:
¹⁴₇N + ¹₁H → ¹⁵₈O
In the reaction above, we can conclude within the given conditions of the reaction that the product formed is heavier than the reactants.
The product is oxygen with a mass number of 15 as shown by the superscript preceeding the symbol of the atom.
The reactants are:
Nitrogen, N with a mass number of 14
Hydrogen, H with a mass number of 1
The mass number is a true reflection of the mass of an atom. It clearly shows the mass of the nucleons which are the most massive particles that makes up an atom. The nucleons are protons and neutrons that makes up the tiny nucleus of the atom.
Oxygen here has more nucleons that each of Nitrogen and Hydrogen.
