What is electronegativity
Answers
When first looking at the word electronegativity, we see the word electro at the beginning so it has to do with electrons which have a negative charge.
Electronegativity is a chemical property and it's how much an atom will be attracted to somebody else's electrons. An atom's electronegativity is affected by its atomic number which is the number of protons in its nucleus and how far away the valence electrons are from the nucleus. Valence electrons are the outermost electrons.
Electronegativity is a measure of the tendency of an atom to attack a boding pair of electrons
I hope that's help !
Related Questions
Charles's law states that A-Volume decreases as pressure decreases B-Volume decreases as temperature increasesC- Pressure and temperature are inversely proportionalD- Volume increases as temperature increases
What do alkaline earth elements have in common
How far can a cough travel?
18. Which of the following reactions are endothermic or exothermic? Explain your answers. A. When a certain amount of potassium nitrate is dissolved in water, the water temperature drops from 23°C to 18°C. B. Jack cooks himself a steak. C. When cold water is mixed with sulphuric acid, the mixture can rapidly reach the boiling point of water. D. A flare burns up slowly.
Figure 11 shows the results
time taken for amylase to produce glucose (s)
Test 4
120
125
110
115
Figure 11
() Calculate the rate of amylase enzyme activity for the 10% starch solution.
Answers
Answer:
Phenolphthalein is an indicator. It is pink in alkaline solutions and turns colourless as the pH decreases.
It can be used to measure the activity of the enzyme lipase on the breakdown of lipids.
Samples of milk containing phenolphthalein were incubated with lipase at different temperatures.
The time taken for the phenolphthalein to turn colourless was recorded and used to calculate the rate of enzyme activity.
Figure 10 shows these results.
Picture
(a) (i) Explain why phenolphthalein turns colourless when lipase breaks down the lipids in milk. (2)
(ii) Describe the effect of temperature on the activity of lipase, as shown in Figure 10. (2)
(iii) Explain why the activity of lipase changes above a temperature of 40°C. (2)
(b) A student investigated the time taken for amylase to breakdown a 10% starch solution into glucose at 37°C. The student repeated the investigation five times.
Final answer:
To calculate the rate of amylase enzyme activity for the 10% starch solution, divide the time taken for amylase to produce glucose by the total time elapsed. For each test, this rate can be expressed as the number of glucose molecules produced per unit of time.
Explanation:
The rate of amylase enzyme activity for the 10% starch solution can be calculated by determining the time taken for amylase to produce glucose. In this investigation, the time taken for amylase to break down the starch solution into glucose was recorded in seconds. To find the rate, divide the amount of glucose produced (in this case, the time taken) by the total time elapsed. For example, for Test 4, the time taken was 120 seconds. The rate of amylase enzyme activity can then be expressed as 1 glucose molecule produced per 120 seconds.
Learn more about Rate of amylase enzyme activity here:
#SPJ3
Answers
the combustibility of calcium is relitivly high
It's relatively high
Answers
Answer:
The correct answer is meiosis takes place, making the sperm cell haploid.
Explanation:
From secondary spermatocytes, the formation of haploid male gamete, that is, spermatid takes place. Its formation takes place by the procedure of meiosis, and therefore, it comprises half of the genetic substance as found in in the primary spermatocyte.
In the beginning, spermatid is a round, immotile cell that distinguishes and turns motile and unique by the procedure is known as spermiogenesis.
Answers
Answer:
of
would be required.
Explanation:
The quantity of solute in a solution of concentration and volume
would be
.
It is given that volume for the solution in this question. It is also given that the concentration of the
solute in this solution is
, which is the equivalent to
.
Apply the equation to find the quantity of
in this solution:
.
Multiply the quantity of
in this solution with the formula mass
of
to find the corresponding mass:
.
Thus, this solution would contain of
.
It would thus take of
to prepare this solution.
Answer:
The required mass to prepare 2.5 L of 1.0 M NaOH solution is 100 g
Explanation:
We do this by preparing the equation:
Mass = concentration (mol/L) x volume (L) x Molar mass
Mass = 1.0 M x 2.5 L x 40 g/mol
Mass = 100 g
Answers
Your answer is A my friend as the atomic number of an atom is determined by the number of protons
I would say option A
Answers
Observation is the process of knowing the problem
Prediction is the process of making a hypothesis
Testing is the experimentation
Interpretation is the data analyzation
Conclusion is the implication and ramifications of the study.