Answer: C
Explanation:
According to the passage, as a result of a mutation, an organism may evolve for better survival. The correct option is C.
What is mutation?The mutation is a condition in which genes and DNA sequence changes. Mutation occurs due to mutagens. These mutagens can be biological or chemical. Cells come in contact with these mutagens and undergo mutation.
The mutation causes diseases, due to changes in DNA sequence and genes. People die due to mutation. Sometimes mutation causes the birth of new genes and traits in an organism.
So, in the given condition, the organism will evolve new traits that can be good or necessary for the better survival of the organism. The passage is talking about radiation.
Therefore, the correct option is С, which may evolve for better survival.
To learn more about mutation, refer to the link:
https://brainly.com/question/13923224
#SPJ6
The question is incomplete. Your most probably complete question is given below:
When a cell divides to grow into two new cells, the double helix splits into two single strands of chromosomes, each of which can then replicate a mirror image of itself. This process, called mitosis, happens every time a cell divides, except for sex cells preparing for sexual reproduction. The result is two new cells, each with a double helix of DNA strands identical to that of the original cell.
Though rare, sometimes an error occurs in this process, resulting in a mutation. Radiation or the appearance of other chemicals can increase their frequency. Sometimes an extra base is inserted, substituted, deleted, or damaged. Usually, these mistakes repair themselves, but sometimes they remain and, as a result, can create a change in the coding for a specific trait. If the new trait helps the organism survive, it may be duplicated and passed on to offspring, which, in time, may lead to an evolution in the organism.
what physical properties can be used to separate heterogeneous mixture's?
A student uses a force of 46 Newtons to push her bike 57 meters. How much work has she done?
W = F x D
Answer:
The displacement is 0.05 meters. The angle between the upward force and the upward displacement is 0 degrees. The work for 1 push-up is approximately. W = 10 N * 0.05 m * cos 0 degrees = 0.5 Joules. If the squirrel does a total of 5.0 Joules of work, then it must have done about 10 push-ups.
Explanation:
3. What range of numbers would you expect on the pH scale for an alkali? (1 mark)
Answer:
a pH above 7 is alkali
a pH lower than 7 is acidic
Additional Practice Questions
6. If you dissolve 2.31 g of barium hydroxide into 250 mL of water and the barium hydroxide is fully ionized, what will
your resulting pH be?
pH of solution = 13.033
Further explanationGiven
2.31 g Ba(OH)₂
250 ml water
Required
pH of solution
Solution
Barium hydroxide is fully ionized, means that Ba(OH)₂ is a strong base
So we use a strong base formula to find the pH
[OH ⁻] = b. Mb where
b = number of OH⁻ /base valence
Mb = strong base concentration
Molarity of Ba(OH)₂(MW=171.34 g/mol) :
[tex]\tt M=\dfrac{mol}{L}=\dfrac{2.31~g\div 171.34~g/mol}{0.25~L}\\\\M=0.054[/tex]
Ba(OH)₂ ⇒ Ba²⁺ + 2OH⁻(b=valence=2)
[OH⁻]= 2 . 0.054
[OH⁻] = 0.108
pOH= - log 0.108
pOH=0.967
pOH+pH=14
pH=14-0.967
pH=13.033
65 grams of Potassium Chloride is dissolved to make 450 mL of solution. What is
the MOLARITY of this solution?
what would cause the liquid in the thermometer to drop?
What is an oxidation number?
a
The charge acquired by an atom in a chemical bond
b
The number of electrons involved in a chemical bond
c
The number of oxygen atoms an element will bond with
d
The number of oxygen atoms a compound has
Answer:
d
Explanation:
i hope it helps you good luck
PLEASEEEE HELP MEE!
ASAP WILL GIVE BRAINLIEST TO CORRECT ANSWER!!!!⇔ AND WILL GIVE A SHOUTOUT
Answer:
2nd option
Explanation:
In which reaction is there a transformation of mass into energy? For A P E X
A. Two hydrogen atom fuse to form a helium atom
B. Ammonium nitrate breaks down into dinitrogen monoxide and water
C. Calcium oxide combines with water to form calcium hydroxide
D. Sodium combines with chlorine to form sodium chloride
Potassium is an alkali metal that is one of the electrolytes needed by the human body to conduct nerve impulses. The majority of potassium
(93.26%) occurs as potassium-39. The rest is either potassium-40 (0.01%)
or potassium-41 (6.73%). *
pls show work for how you got answer!!
Answer:
39.13
Explanation:
To find that atomic mass of this potassium, we follow the steps below:
Given parameters:
Abundance of K - 39 = 93.26%
Mass of K - 39 = 39
Abundance of K - 41 = 6.73%
Mass of K - 41 = 41
To find the average atomic mass;
Average atomic mass =( mass x abundance of k -39 ) +( mass abundance of k- 41)
Average atomic mass = (39 x 93.26%) + (41 x6.73% ) = 39.13
What is the molecular mass of a gas whose density is 1.25 grams per liter at STP?
STP = standard temperature and pressure
Use the formula:
d = MP/RT
where:
d = density = 1.25 g/L
M = molar mass (unknown)
P = pressure = 1 atm (standard pressure)
R = universal gas constant = 0.8206 L*atm/mol*K
T = temperature = 0C or 293.15 K (standard temperature)
1.25 g/L = M*(1 atm)/(0.08206 L*atm/mol*K)*(273.15 K)
M = 28.0 grams/mol
Can anyone help me with this?
Answer:
(a)
[tex]v = 10.1mL[/tex] --- Silicon
[tex]v = 9.0mL[/tex] --- Tin
[tex]v = 7.5mL[/tex] -- Lead
(b)
[tex]d = 1.55g/mL[/tex] --- Silicon
[tex]d = 5.56g/mL[/tex] --- Tin
[tex]d = 9.53g/mL[/tex] --- Lead
Explanation:
Given
The attached table
Solving (a): The volume of each sample
For each element, the volume (v) is calculated as:
[tex]v = v_f - v_i[/tex]
Where:
[tex]v_f = Final\ Volume[/tex]
[tex]v_i = Initial\ Volume[/tex]
So, we have:
Silicon:
[tex]v_f = 40.1mL;\ \ \ v_i = 30.0mL[/tex]
So, we have:
[tex]v = 40.1mL - 30.0mL[/tex]
[tex]v = 10.1mL[/tex]
Tin:
[tex]v_f = 29.0mL;\ \ \ v_i = 20.0mL[/tex]
So, we have:
[tex]v = 29.0mL - 20.0mL[/tex]
[tex]v = 9.0mL[/tex]
Lead:
[tex]v_f = 33.5mL;\ \ \ v_i = 26.0mL[/tex]
So, we have:
[tex]v = 33.5mL - 26.0mL[/tex]
[tex]v = 7.5mL[/tex]
Solving (b): The density of each sample
For each element, the density (d) is calculated as:
[tex]d = \frac{m}{v}[/tex]
Where
[tex]m = mass[/tex]
[tex]v = volume[/tex]
So, we have:
Silicon:
[tex]m = 15.70g[/tex]
[tex]v = 10.1mL[/tex] --- calculated in (a)
Density (d):
[tex]d = \frac{15.70g}{10.1mL}[/tex]
[tex]d = 1.55g/mL[/tex]
Tin:
[tex]m = 50.07g[/tex]
[tex]v = 9.0mL[/tex] --- calculated in (a)
Density (d):
[tex]d = \frac{50.07g}{9.0mL}[/tex]
[tex]d = 5.56g/mL[/tex]
Lead:
[tex]m = 71.47g[/tex]
[tex]v = 7.5mL[/tex] --- calculated in (a)
Density (d):
[tex]d = \frac{71.47g}{7.5mL}[/tex]
[tex]d = 9.53g/mL[/tex]
Which choice best describes a testable hypothesis?
A.) Carrots look better when given more water.
B.) Lilacs are better smelling than roses.
C.) Mountain lions travel over 100 km per day.
D.) The bacterium E. coli is worse than the bacterium S. aureus.
Answer:
A. carrots look better when given more water
Some atoms are chemically stable and will not bond with atoms of other
elements. Describe atoms that are stable.
help
Answer:
The stability of atoms depends on whether or not their outer-most shell is filled with electrons. If the outer shell is filled, the atom is stable. Atoms with unfilled outer shells are unstable, and will usually form chemical bonds with other atoms to achieve stability.
Explanation:
Answer:
The stability of atoms depends on whether or not their outer-most shell is filled with electrons. If the outer shell is filled, the atom is stable. Atoms with unfilled outer shells are unstable, and will usually form chemical bonds with other atoms to achieve stability.
Explanation:
The transfer of thermal energy from a warmer object to a cooler object is called
Answer:
heat transfer
What causes surface water to move
Answer:
C - Wind
Explanation:
its C or wind because global wind systems control the surface water
Answer:
Wind
Explanation:
surface water from oceans move from the wind I assume it is the same for all bodies of water
EZ POINTS!!!
!!!
..!!!!!
humans have a total of 46 chromosomes therefore, humans inherit ____ chromosomes from each parent. (use numerals for the answer)
Answer:
23
Explanation:
there are 23 pairs of chromosomes
46 individula chromosomes
but each parnet contribute one chromosome to each pair
Answer:
23 :)
Explanation:
For which solutes dissolved in a liquid is the overall enthalpy of solution exothermic? A-some gases and most solids B- some solids and most gases C-few solids and few gases D- most solids and most gases
Answer:
B
Explanation:
Just took the test
Answer:
b
Explanation:
edge 2021
There are two spheres of the same
size, one is metal and one is wood. Why
does the metal sphere have more mass?
Answer:
metal is heavier than wood.
Explanation:
metal is made of rock which doesn't have air in it while wood has air in it making it lighter
Connect the group to the configuration.pleas help !!
Explanation:
The group number in the periodic table represents number of valence electrons of the elements in a certain group.
Group 1 : 2,8,1
Group 2 : 2,8,8,2
Group 3 : 2,8,3
Group 4: 2,4
Group 7 : 2,8,7
Answer:
2, 8 7 7 valence electrons Group 7
2, 8 , 1 1 valence electrons Group 1
2 8 3 3 valence electrons Group 3
2 4 4 valence electrons Group 4
2 8 8 2 2 valence electrons Group 2
Explanation:
The valency of an electronic configuration of an atom can be used to determine the group an element belongs.
The valency is the number of outermost shell electrons an atom contains.
So;
2, 8 7 7 valence electrons Group 7
2, 8 , 1 1 valence electrons Group 1
2 8 3 3 valence electrons Group 3
2 4 4 valence electrons Group 4
2 8 8 2 2 valence electrons Group 2
PLEASE HELP QUICK!
1.) SnO2 (s) + 2 H2 (g) → Sn (s) + 2 H2O (l)
What mass of water is produce when 79.0g of SnO2 are consumed in the reaction above?
2.) C3H8(g) + 5 O2 (g) → 3 CO2 (g)+ 4 H2O (g)
What volume of oxygen is required to completely combust 0.499L of propane (C3H8) at STP?
BRAINLIEST FOR GOOD ANSWERS TO BOTH.
Answer:
1) Mass = 18.864 g
2) V = 2.47 L
Explanation:
1) Given data:
Mass of water produced = ?
Mass of SnO₂ react = 79.0 g
Solution:
SnO₂ + 2H₂ → Sn + 2H₂O
Number of moles of SnO₂:
Number of moles = mass/molar mass
Number of moles = 79.0 g/ 150.71 g/mol
Number of moles = 0.524mol
Now we will compare the moles of SnO₂ and H₂O
SnO₂ : H₂O
1 : 2
0.524 : 2/1×0.524 =1.048 mol
Mass of water:
Mass = number of moles × molar mass
Mass = 1.048 mol × 18 g/mol
Mass = 18.864 g
2) Given data:
Volume of oxygen required = ?
Volume of C₃H₈ combust at STP = 0.499 L
Solution:
Chemical equation:
C₃H₈ + 5O₂ → 3CO₂ + 4H₂O
Number of moles of C₃H₈:
PV = nRT
R = general gas constant = 0.0821 atm.L /mol.K
1 atm × 0.499 L = n × 0.0821 atm.L /mol.K × 273.15 K
0.499 L atm.L = n × 22.43 atm.L /mol
n = 0.499 L atm.L / 22.43 atm.L /mol
n = 0.022 mol
Now we will compare the moles of propane and oxygen.
C₃H₈ : O₂
1 : 5
0.022 : 5/1×0.022 = 0.11 mol
Volume of oxygen required:
PV = nRT
R = general gas constant = 0.0821 atm.L /mol.K
1 atm × V = 0.11 mol × 0.0821 atm.L /mol.K × 273.15 K
1 atm × V = 2.47 atm.L
V = 2.47 atm.L / 1 atm
V = 2.47 L
which term refers to the condition that exists when no over all change in concentration results from diffusion?
a. concentration
b. osmosis
c. equilibrium
d. randomness
Answer:
a.cocentration es la respuesta
What is the formula for an ionic compound that forms out of Sr and Br?
Group of answer choices
Sr and Br will not form an ionic compound.
Sr2Br
SrBr2
SrBr
Answer: St Br2
Explanation: Br has only one valence electrons and Sr has 2 valence electrons this is why we need 2 atoms of Br to for an ionic compound with 1 atom of Sr.
Based on the contributions of early scientists, one can conclude that one discovery was
Answer:
the discovery of atomic structure.
Explanation:
Rutherford was a famous scientist who gave his theory of atomic structure.
Ernest Rutherford was a great physicist who is well known for his pioneering studies and discoveries about atoms and radioactivity. Rutherford was considered to be the greatest experimentalist after Michael Faraday.
Rutherford's atomic model was one of the greatest discoveries which provided many answers and solutions to the structure of atom and molecules that our earth is surrounded of.
Rutheford discovered that an atom has a tiny mass of positively charged particles in the centre of the atom called nucleus and negatively charged electrons surrounds the nucleus.
Bohr joined Rutherford in his studies and discovered many new facts about the structure of the atom based on the Rutherford's model. Today atomic model is the product of Rutherford atomic structure.
A 0.200 M NaOH solution was used to titrate a 18.25 mL HF
solution. The endpoint was reached after 31.20 mL of titrant
were added. Find the molar concentration of the original HF
solution.
The molar concentration of the original HF solution : 0.342 M
Further explanationGiven
31.2 ml of 0.200 M NaOH
18.2 ml of HF
Required
The molar concentration of HF
Solution
Titration formula
M₁V₁n₁=M₂V₂n₂
n=acid/base valence (amount of H⁺/OH⁻, for NaOH and HF n =1)
Input the value :
[tex]\tt 0.2\times 31.2\times 1=M_2\times 18.25\times 1\\\\M_2=0.342[/tex]
help PLEASEEE !!!!!! will give brainliest !
Answer:
6. O₂ + Cu —> CuO
7. H₂ + Fe₂O₃ —> H₂O + Fe
8. O₂ + H₂ — > H₂O
9. H₂S + NaOH —> Na₂S + H₂O
10. Al + HCl —> H₂ + AlCl₃
Explanation:
6. Oxygen gas react with solid copper metal to form copper(II) oxide
Oxygen gas => O₂
Copper => Cu
copper(II) oxide => CuO
The equation is:
O₂ + Cu —> CuO
7. hydrogen gas and iron(III) oxide powder react to form liquid water and solid iron power
hydrogen gas => H₂
Iron(III) oxide => Fe₂O₃
Water => H₂O
Iron => Fe
The equation is:
H₂ + Fe₂O₃ —> H₂O + Fe
8. Oxygen gas react with hydrogen gas to form liquid water
Oxygen gas => O₂
hydrogen gas => H₂
Water => H₂O
The equation is:
O₂ + H₂ — > H₂O
9. Hydrogen sulphide gas is bubbled through a sodium hydroxide solution to produce sodium sulphide and liquid water
hydrogen sulphide => H₂S
sodium hydroxide => NaOH
Sodium sulphide => Na₂S
Water => H₂O
The equation is:
H₂S + NaOH —> Na₂S + H₂O
10. Hydrogen gas and aluminum chloride solutions are produced when solid aluminum react with hydrochloric acid
Aluminum => Al
Hydrochloric acid => HCl
hydrogen gas => H₂
Aluminum chloride => AlCl₃
The equation is:
Al + HCl —> H₂ + AlCl₃
what is the soda's density if its volume is 384ML, and its mass is 402g?
Answer:
1.05 g/mLExplanation:
The density of a substance can be found by using the formula
[tex]density = \frac{mass}{volume} \\[/tex]
From the question we have
[tex]density = \frac{402}{384} \\ = 1.046875[/tex]
We have the final answer as
1.05 g/mLHope this helps you
What is the best description
of a mechanical wave?
A. A mechanical wave transfers energy through matter.
B. A mechanical wave transfers energy through empty
space.
C. A mechanical wave has many vibrations.
Answer: I think its A? im not completely sure though!!
Explanation:
Please help fast
What statement is correct about wind turbines. A. They create Mechanical and electrical energy B. They transform wind energy to electrical energy C. Their total energy decreases when electricity is produced D. Their total energy increases when electricity is produced
Answer:
A.
Explanation:
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