Answer:
B. are openings in the earth surface
Drag each sequence to the correct location in the table.
Sort the sequences based on the type of mutation they display.
TATTA - TATTAGA
TATTCG TATTAAT
TATTAT TATTACG
ACGTATTC - ACGTTTC
ATTA GTAC - ATGT ACTA
GATCCAT - GATCCATCA
TACTTAGT TACTTGT
Deletion
Translocation
Insertion
Answer:
Does the picture go with the question?
Explanation:
PLZ HELP I NEED THIS RN!
when the balls reach the bottom of the ramp, which statement will describe their energy?
A. they will have no kinetic energy
B. they will have 100% potential energy
C. they will have 100% kinetic energy
C. they will have different amounts of potential energy
Answer:
they will have 100% kinetic energy
Explanation:
all the potential energy has been used when it is at the bottom of the ramp
A sample of gas at 62.0°C occupies a volume of 4.80 L at a pressure of 2.90 atm. How many
moles of gas are contained in the sample?
Answer: 37.01 moles (mol) of gas
Explanation:Use PV=nRT
which is also equal to n=PV/RT
P=2.90
V= 4.80
R = 8.31 (R will always be the same in any equation)
T= 62.0
2.90 x 4.80= 13.92 / 8.31 x 62= 515.22
13.92/13.92=515.22/13.92
n= 37.01 mol
A tank of gas is found to exert 8.6 atm at 38°C. What would be the required
temperature to change the pressure to standard pressure?
Answer:
36.2 K
Explanation:
Step 1: Given data
Initial pressure of the gas (P₁): 8.6 atmInitial temperature of the gas (T₁): 38°CFinal pressure of the gas (P₂): 1.0 atm (standard pressure)Final temperature of the gas (T₂): ?Step 2: Convert T₁ to Kelvin
We will use the following expression.
K = °C +273.15
K = 38 °C +273.15 = 311 K
Step 3: Calculate T₂
We will use Gay Lussac's law.
P₁/T₁ = P₂/T₂
T₂ = P₂ × T₁/P₁
T₂ = 1.0 atm × 311 K/8.6 atm = 36.2 K
A paracetamol tablet was crushed and an excess of HCl 25cm³ of 1.0mol was added. the result of the solution was titrate against 0.5mol of NaOH. calculate the mass of CaCO3 in the paracetamol.
Answer:
1.35g of CaCO₃ are in the paracetamol
Explanation:
Assuming the volume of the 0.5mol NaOH was 23cm³
The CaCO₃ of paracetamol reacts with HCl as follows:
CaCO₃ + 2HCl → CO₂ + H₂O + CaCl₂
When an excess of HCl is added and titrated, we can find the moles of HCl that react = Moles CaCO₃ based on the second reaction:
NaOH + HCl → H₂O + NaCl
Moles added of NaOH:
23cm³ = 0.023L * (0.5mol / L) = 0.0115 moles NaOH = Moles HCl in excess
Moles of HCl:
25cm³ = 0.025L * (1.0mol / L) = 0.025 moles HCl
The moles of HCl that reacted = Moles CaCO₃ are:
0.025 moles - 0.115 moles = 0.0135 moles CaCO₃
The mass of CaCO₃ -Molar mass: 100.09g/mol- is:
0.0135 moles CaCO₃ * (100.09g/mol) =
1.35g of CaCO₃ are in the paracetamolWhat are 2 substances that DO NOT REACT?
Water and oil? Cake and your finger? Glass and virtually anything? ...
Tonnes and tonnes of noninterreactant substances.
Hope this helps.
define saturated and unsaturated fats
Answer:
SATURATED: Saturated fat is a type of fat in which the fatty acid chains have all or predominantly single bonds.
UNSATURATED: Unsaturated fats are loosely packed. They tend to be liquid at room temperature.
There are two main types of unsaturated fat:
Monounsaturated
Polyunsaturated
Car manufacturers use radiation for which task?
A) Sealing Windows
B) Drying paint
C) Cleaning tires
D) Lubricating engines
THE CORRECT ANSWER IS B.
#edge2021
Answer:
Indeed it is B, you are correct! :3
Explanation:
:3
Answer:
B. Drying paint
Car manufacturers use UV radiation to dry the paint o the vehicle. The high reflectivity of infrared radiation helps to keep the car interior cool. It also gives advantages over convection heating.
Explanation:
Hope it helps
10. Which best explains why the total mass of the product(s) would be less than the total weight of the
reactant(s) after a chemical reaction?
А
A physical change occurred.
B
Atoms involved in the reaction lost mass.
с
Precipitates were created in the new solution.
D
Gases were released to the atmosphere.
Answer:
D. Gases were released to the atmosphere
Explanation:
In accordance to the law of conservation of mass, the total amount of reactants must equate the total amount of products at the end of the reaction because matter can not be lost or created. However, certain changes like gas evolution, formation of precipitate etc. indicates the occurrence of a chemical reaction.
In a chemical reaction, the total mass of the product(s) would be less than the total weight of the reactant(s) because GASES, which constituted part of the mass of the reaction, WERE RELEASED INTO THE ATMOSPHERE. However, if the mass of the gas released can be accounted for, the amount of reactants and products must balance.
Which of the following are true about both the sun and the stars? Choose the three correct answers.
A.
Both are visible during the day in summer.
B.
Both move across the sky from east to west.
C.
Both change positions in the sky due to Earth's revolution.
D.
Both are visible at night in winter.
E.
Both appear in different positions in the sky due to Earth's rotation.
F.
Both move from north to south in the sky.
Answer:
D, F
Explanation:
if the temperature of 20.0 L of gas were increased to twice the initial value, while the pressure is held constant what would be the volume of the gas at the new temperature
Answer:
40 L
Explanation:
From the question given above, the following data were obtained:
Initial volume (V₁) = 20 L
Initial temperature (T₁) = T
Final temperature (T₂) = 2T
Pressure (P) = constant
Final volume (V₂) =?
The new (i.e final) volume of the gas can be obtained as follow:
V₁/T₁ = V₂/T₂
20/T = V₂/2T
Cross multiply
T × V₂ = 20 × 2T
T × V₂ = 40T
Divide both side by T
V₂ = 40T /T
V₂ = 40 L
Therefore, the new volume of the gas is 40 L
Explain why this substance is formed?
How many electrons can beryllium lend
Answer:
2 because it has two outer shell electrons out of 8 (relevant rule only for the first 20 elements)
What are the purpose of a chemical equation check all that apply
Answer: (A,B,D) [1, 2, 4]
Explanation:
Which of the following leads to a higher rate of effusion?
Answers:
1. Reduced temperature
2. Lower molar mass
3. Slower particle movement
4. Cooler gas sample
Answer:
Lower molar mass :)
Explanation:
Answer:
2. Lower Molar Mass
Explanation:
effusion can increase with either temperature increase, faster moving particles, or when the gas has lower molar mass. the only answer option that fits the description is answer option 2. Lower molar mass
Copper has two isotopes,
copper-63 and copper-65. It has an atomic mass of 63.546 amu. Sketch a pie graph that shows the approximate abundance of each
copper isotope based on the atomic mass?
Answer:
69.152 % → 63Cu
30.848 % → 65Cu
Explanation:
As you know, the average atomic mass of an element is determined by taking the weighted average of the atomic masses of its naturally occurring isotopes.
A compound is found to contain 29.67 % sulfur and 70.31 % fluorine by mass.
To answer the question, enter the elements in the order presented above.
QUESTION 1:
The empirical formula for this compound is
pls help will give brainilest or however you spell it
Answer:
1. balanced
2. balanced
3. unbalanced
4. balanced
5. balanced
6. unbalanced
7. balanced
8. unbalanced
Explanation:
All substances freeze at the same temperature, so they all have exactly the
same freezing point.
O True
O False
Answer:
I think it would be false
Explanation:
All things have a unique freezing/melting point
How many moles of O are in 11.6 mol Fe(NO3)3?
Express your answer in moles to three significant figures.
Answer:
Why might the expression "1 mole of nitrogen" be confusing? ... WebAssign will check your answer for the correct number of significant ... Calculate the moles of O atoms in 8.18 g of Mg(NO3)2. ... If the molar mass of hemoglobin is 6.8 104 g/mol, how many Fe2+ ions are ... (_) C7H16(l) + 11 O2(g) 7 CO2(g) + 8 H2O(g)
Explanation:
Which line (A or B) represents a faster
speed?
Answer:
A
Explanation:
Because in 1 second, line A was faster than line B.
5.14 x 1023 ions NaCl to Moles
Answer:
2 moles
Explanation:
For a mole NaCi, we have a mole of sodium ion and a mole of chloride.
Suggest why sodium wasn’t produced until the early 19th century.
Answer:
The reason is that sodium attaches itself very strongly to other elements. Its compounds are very difficult to break apartand also because it is so reactive.
What does (endangered wildlife) mean ?
Answer:
Hey mate....
Explanation:
This is ur answer.....
A species considered to be facing a very high risk of extinction in the wild.
Hope it helps you,
Mark me as the brainliest...
FOLLOW ME! :)
Answer:
It means when a species in the wildlife is in danger or close to being completely extinct.
water is a ____ molecule meaning the positive hydrogen end attracts the negative oxygen ends of another
A. balance
B.universal
C. wet
D.polar
please answer! will give brainliest
Water is a polar molecule where, the positive hydrogen end attracts the negative oxygen ends of another water molecule. Thus, option D is correct.
What is polarity ?Polarity is ability of charge separation in a molecule. In some molecules, the positive and negative ends exists separately and both ends remains reactive towards the counter charged end of other molecule.
The charge separation in molecules results in a dipole moment. Permanent dipole moment make the molecule polar. Water is a polar molecule.
The shared pair of electrons in water are more attracted towards the electronegative oxygen atom leads the charge separation. This polarity helps to the formation of strong intermolecular hydrogen bonding.
Find more on polar compounds:
https://brainly.com/question/29869649
#SPJ2
Which statement about the atomic nucleus is correct?A.The nucleus is made of protons and has a negative charge.B.The nucleus is made of protons and neutrons and has a negative charge.C.The nucleus is made of electrons and has a negative charge.D.The nucleus is made of protons and neutrons and has a positive charge.
HELPPP PLEASE !/!/!/!/!/!/!/!
Answer:
the second question should be along the staircase
Which of the following models a synthesis reaction?
Answer: D
Explanation: i’m right
When these marbles collide, what force is experienced by each marble?
Answer:
when they collide they can experience collision
because without force collision wouldn't have happen.
Which statement best describes the use of a chemical indicator in a titration?
A. It must be measured to the nearest 0.01 mL.
B. It must be colored in the acid solution.
C. It must measure pH directly at all pH values.
D. It must change color near the equivalence point.
The statement best describes the use of a chemical indicator in a titration is it must change color near the equivalence point.
What is a chemical indicator?A chemical indicator is any substance that shows a chemical change by color or other things.
In titration, phenolphthalein is used as an indicator in the titration of an acid or base.
Other chemical indicators are methyl yellow, litmus paper, and pH indicator.
Thus, the correct option is D. It must change color near the equivalence point.
Learn more about chemical indicators
https://brainly.com/question/7851989