Answer:
Concentrations:
1. 12 g salt in 3 L water = 0,4 g salt / 100 ml water
2. 12 g salt in 6 L water) = 0,2 g salt / 100 ml water
3. 30 g sugar in 5 L water) = 0,6 g sudar / 100 ml water
Explanation:
The given data are expressions to deal with the concentration of solutions (a kind of homogeneous mixtures).
There are many forms or units to express the concentrations of the mixtures.
The three cases show mass of solute (salt or sugar) in volume of solvent (water).
One form to express the concentration of the solutions is as mass of solute per 100 mililiters of solvent, which is useful to compare with solutibility tables.
You can do that using the formula:
- (mass of solute in grams / volume of solvent in mililiters) × 100.
To find the concentrations of the given solutions, first you need to convert the volume of the solvent to mililiters (ml):
- 3 L water × 1,000 ml / L = 3,000 ml water
- 6 L water × 1,000 ml / L = 6,000 ml water
- 5 L water × 1,000 ml / L = 5,000 ml water
Concentrations:
1. (12 g salt / 3,000 ml water) × 100 = 0,4 g salt / 100 ml water
2. (12 g salt / 6,000 ml water) × 100 = 0,2 g salt / 100 ml water
3. (30 g sugar / 5,000 ml water) × 100 = 0,6 g sugar / 100 ml water
This is most likely an example of a mutation.
Mutation is any alteration or change in DNA sequence which affects the genetic instruction carried by that gene. Mutation can occur either as a result of errors during DNA replication or due to environmental factors such as cigarette smoke and ultraviolet (UV) radiation. Mutations are heritable, especially if they have a positive effect. The disorder Down syndrome is an example of mutation which occurs due to error in cell division in which there is extra copy of a genetic material (specific chromosome); chromosome 21.
Answer:
C. an attractive force that acts between all objects without contact
Explanation:
The force of gravity, first discovered by Isaac Newton, is one of the four fundamental forces. It is a force that is always attractive, and it is exerted between all objects that have mass. Also, the force is exerted even when the two objects are not in contact.
The magnitude of the force of gravity between two objects is given by
where
G is the gravitational constant
m1 and m2 are the masses of the two objects
r is the distance between the two objects
<h2><em>
Mark me the brainliest answer if this helped ;3</em></h2>
<span>In physical chemistry, the van der Waals forces is the sum of the attractive or repulsive forces between molecules other than those due to covalent bonds or to the electrostatic interaction of ions with one another or with neutral molecules. Van der Waals forces are relatively weak compared to normal chemical bonds, but play a fundamental role in fields as diverse as supramolecular chemistry, structural biology, polymer science, nanotechnology, surface science, and condensed matter physics.</span>
1. <span>The codons that signal the end of a polypeptide chain are called terminators. The correct option among all the options given is the fourth option or option "4".
2. "</span>A dehydration reaction forms a peptide bond." is the one among the following that <span>occurs after a codon and anticodon form hydrogen bonds. The correct option is the third option or option "3".
3. </span>If cysteine is specified by the codons UGC and UGU, the anticodons present on tRNAs that carry cysteine are <span>ACG and ACA. The correct option among the options given is the fourth option or option "4".</span>