Time passed Time passed 14C initially present 14C at end of half-life
(half life) (Years)
........................................................................................................................
0 0 1,000,000 1,000,000
1 5750 ..... 5,00,000
2 11500 ..... 2,50,000
3 17250 ..... 1,25,000
4 23000 ..... 62,500
Since, wood sample contained 1/16 of current atmospheric concentration of 14C. It means that sample has crossed 4 half-life. Number atoms left are 4 half life = 62,500
Chromosomes have hereditary function
that are capable of self-duplication and they have thread-like structures seen
inside the nucleus of plant and animal. In plants, they go through a cycle
called alteration of generation that has multicellular stages. One is sporophyte
that is a diploid, and the other is gametophyte with a haploid.
<span>Moreover, spores are produce through
meiosis so it go through a process of chromosome reduction in order to create a
haploid spores. While, gametes undergo mitosis and the structure is already a haploid,
which means that the number of chromosomes will not change in order to produce
haploid. In this case, the plant have both spores and gametes and the
similarities is that, they are both singles celled and a haploid. Therefore,
the number of the chromosome in the gametophyte generation is also 32.</span>
Answer:
bonds within the nucleus of reactants atoms are broken and rearranged to form new product atoms
Answer:
A covalent bond
Explanation:
the atoms bond by sharing electrons. Covalent bonds usually occur between nonmetals. For example, in water (H2O) each hydrogen (H) and oxygen (O) share a pair of electrons to make a molecule of two hydrogen atoms single bonded to a single oxygen atom.
Answer:
70g of Pb(NO3)2 would need to be added
Explanation:
As you can see in the solubility graph of lead nitrate, Pb(NO₃)₂, the solubility of this salt (That is, the maximum amount of the salt that can be dissolved in 100g of the solvent producing a homogeneous solution) is 70g in 100g of water = 70g of the salt in 100mL of water.
A saturated solution is also defined as solubility: The maximum amount of a solute that can be dissolved in a solvent.
That means:
70g of Pb(NO3)2 would need to be added
