because they run out of energy.
EXPLANATION:
when it is transferred and to other objects, or their kinetic energy is converted into gravitational energy.
A lot of things in life involve chemistry. Let's start from the most obvious one - cooking.
While you are cooking, you need to mix ingredients and create homogeneous and heterogeneous mixtures, which is where chemistry is applied. Also, all of these ingredients change their physical and chemical state, which is also what chemistry studies.
<span>1) </span><span>Deduce
the two masses and see the amount of water was driven off when heated: </span><span>
<span>5.03 g -
4.23 g = 0.8 g H2O given off </span>
<span>2) Change
mass from grams to moles of H2O: </span>
<span>0.8 g H2O
/ 18 g H2O in 1 mole = 0.044 mol H2O </span>
<span>3) Change
left over mass to moles of BaCl2 .</span></span>
<span>
<span>4.23 g
BaCl2 / 207 g BaCl2 in 1 mol = 0.021 mol BaCl2 </span>
<span>4)Find
the ratio of mol H2O to mol BaCl2: </span>
<span>0.044 mol
H2O : 0.021 mol BaCl2 </span>
<span>5) The
resulting ratio is 2:1 so two H2O for each BaCl2, thus, the hydrate was named: </span>
<span>Barium
chloride di-hydrate</span></span>
There will be a 25% chance that the plant will have wrinkled seed.
Explanation:
The round seeds are dominant and can be considered homozygous for round seeds will have alleles RR
The wrinkled seeds are recessive and can be considered homozygous for wrinkled seeds will have alleles rr
When these are crossed
r r
R Rr Rr
R Rr Rr All the progeny are Heterozygous round seed
When These are crossed with plant heterozygous for round seeds
RrXRr
R r
R RR Rr
r Rr rr
The genotype ratio is 1:2:1 1 homozygous round, 2 heterozygous round, 1 homozygous wrinkled.
The phenotype ratio is 3:1 3 round and 1 wrinkled
Hence 25 % of the plants will have wrinkled seeds
