2. What is the concentration of an acid that has 5.2 moles of HCI in 750 mL of water?
w
O A. 6.9 M
OB. 6.8 M
OC. 7.5 M
OD. 5.2 M
Answers
Answer:
A
Explanation:
You will convert 750mL into litters which will be .75 litters. Then you divide the moles by litters Morality / .75 Litters. when you do the math you will get 6.9
Related Questions
Contrast the excretory
and digestive systems
The digestive system
breaks down
food and releases it as
waste.
The excretory system
filter
the
blood through the
and
releases waste as
Answers
Answer:
urine and poop
Explanation:
PLEASE HELP ME
100 POINTS+BRAINLIEST
SCIENCE VOCAB!
Answers
2. Domains. 2
3. Ion
4. Positive. ?
5. Protons
6. Electrons
7. Electrons
8. Conductors. ?
9. Insulator
10. Negative
11. Static
12. Opposites
13. Closer
14. Stop/quit
? Are the ones I’m not too sure on but i think I’m right
n a covalent bond: A. Both atoms share their electrons. B. One atom accepts electrons from another. C. The atoms attract each other but their electrons do not interact. D. None of these.
Answers
Answer:
Hey there!
In a covalent bond, both atoms share their electrons.
Hope this helps :)
The correct statement is that in a covalent bond, both atoms share their electrons. The correct answer is A. Both atoms share their electrons.
In a covalent bond, both atoms share their electrons to achieve a more stable electron configuration. Covalent bonds occur between nonmetal atoms, and they involve the sharing of electron pairs between the participating atoms. This sharing allows both atoms to achieve a more complete octet (or duet for hydrogen) in their outermost energy level.
Unlike ionic bonds, where one atom transfers electrons to another, covalent bonds involve a mutual sharing of electrons. This sharing can be equal (nonpolar covalent) or unequal (polar covalent) depending on the electronegativity difference between the atoms involved.
Option B, "One atom accepts electrons from another," is not characteristic of a covalent bond. That description aligns more with an ionic bond, where one atom donates electrons to another, resulting in the formation of charged ions.
Option C, "The atoms attract each other but their electrons do not interact," does not accurately describe a covalent bond. In a covalent bond, the sharing of electrons is the basis of the interaction between atoms, and the electrons of both atoms do interact and participate in the bond formation.
Therefore, the correct statement is that in a covalent bond, both atoms share their electrons.
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How is density different from weight and mass?
Answers
Hello there!
How is density different from weight and mass you say? It's simple!
1. Unlike weight, density is composed of mass and volume.
2. By dividing the mass over the volume, you can determine an object's density, while weight is the product of mass and gravity.
Hope this helps :) if so, can I get Brainliest?
Weight is how heavy an object is/ how much force it exerts
Mass is how much matter is in an object
I hope this helps! If you need the formulas on how to get them you can always comment and ask :)
Which of the following problems would be a direct result of humans building along the ocean shore zone?
A. the erosion of the sand and soil from the shoreline
B. sand dunes and vegetation being disturbed
C. the movement of sand from one place to another
D. sand being washed away over long periods
Answers
Answer:
I think it is B.
Explanation:
The erosion of the sand and soil from the shoreline would be a direct result of humans building along the ocean shore zone. When humans build structures along the shoreline. This can lead to increased erosion of the shoreline and loss of the beach.
Building along the ocean shore zone can have several impacts on the natural environment. One of the direct impacts is the erosion of the sand and soil from the shoreline. This occurs because construction can disrupt the natural processes that maintain the beach, such as the movement of sand and the protection provided by vegetation.
For example, building seawalls or other structures can prevent the natural movement of sand and sediment along the beach. This can lead to erosion of the shoreline, as the sand is no longer able to accumulate in areas where it is needed to protect the shoreline. These plants help to hold the sand in place and protect the beach from erosion.
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What are the ways humans use, collect, and distribute renewable and nonrenewable natural resources?
Your answer should include at least six complete sentences to explain the claim, evidence, and reasoning.
Answers
Answer:
Air and water pollution, damage to public health, wildlife and habitat loss, water use, land use, and global warming emissions.
Explanation: HOPE THIS HELPS!!!!Determine the power of 900 joules of work done in 4 seconds
A) 3600 W
B) 225 W
C) 904 W
D) 450 W
Answers
Answer:
B. 225 W
Explanation:
Power is the measure of the amount of work done in a certain time frame. It can be found using the following formula.
p=w/t
where w is the amount of work done in joules and t is the amount of time in seconds.
We know that 900 joules of work was done in 4 seconds.
w=900 J
t= 4 s
Substitute these values into the formula.
p=900 J/ 4 s
Divide 900 by 4
900/4=225
p= 225 J/s
1 Joules of work per second (J/s) is equal to 1 Watt (W). Therefore, we can substitute Watts for Joules per second.
p= 225 Watts
The power is 225 Watts, and the correct answer is B.
Copper and gold have similar reactive properties. On the Periodic Table of the Elements, these elements are most likely to...
Select one :
A || have nearly the same mass.
B || have the same number of protons.
C || be in the same group.
D || be in the same period.
Answers
Answer:
C. Be in the same group
Explanation:
Most elements in the same group have similar properties.
Copper and gold have similar reactivity properties, thus they are most likely to belong to the same group. Thus option C is correct.
The reactive properties or the chemical properties of an element have been based on the presence of the valence electrons in the atom.
The valence electrons in the atom are responsible for the bond formation and other intermolecular interactions thereby contributing to the reactivity of the atom.
In the periodic table, on moving down the group, the number of valence electrons to the atoms remains constant with the increase in the size of the atom. Thus, the elements belonging to the same group have consisted of similar reactivity properties.
Copper and gold have similar reactivity properties, thus they are most likely to belong to the same group. Thus option C is correct.
For more information about the reactive properties, refer to the link:
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What is your carbon footprint?
A: the amount of carbon dioxide you use when recycling
B: the amount of oxygen put into the atmosphere due to your consumption of fossil fuels
C: the amount of carbon dioxide and oxygen in the atmosphere at any given time
D: the amount of carbon dioxide put into the atmosphere due to your consumption of fossil fuels
Answers
Answer:
D
Explanation:
According to WHO, a carbon footprint is a measure of the impact your activities have on the amount of carbon dioxide (CO2) produced through the burning of fossil fuels and is expressed as a weight of CO2 emissions produced in tonnes.
the figure shows the great ocean conveyor belt. which best describes what this model represents?
A. The model shows how ocean currents change the salinity of water.
B. the model shows how ocean currents move heat energy around earth
C. the model shows how salinity of water affects its density
D. the model shows how the density of water differs between the north Atlantic and other parts of the ocean.
Answers
Answer:
d
Explanation:
The ocean conveyor belt shows the movement of the oceanic water and the salinity. The model represents the density of the water in different regions of the world. Thus, option d is correct.
What are ocean conveyor belts?Ocean conveyor belts are the oceanic current movement in their oceans across others and how the water moves across the water bodies across the globe.
The model shows that high salinity water gets heavy and sinks in the ocean of North Atlantic but the water of the Indian and the pacific oceans are less saline and remains at the surface.
Therefore, option D. the water differs in oceans based on density.
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Select the correct scientific notation form of this numeral using only 2 significant figures. 5,421,200.00 m
Answers
Answer:
5.4 × 10^6
Explanation:
How long will an object remain at rest, according to Newton's first law of motion?
10 points
A: It can't rest
B: Until noon
C: Until an unbalanced force occurs
D: As long as there are unbalanced forces acting on it
Answers
Until an unbalanced force occurs
I just need help all I need is the answer please some one
Answers
Answer: The correct fill-in-the-blank answers are:
1. through binary fission (already filled in)
2. be resistant to penicillin
3. through asexual reproduction.
4. cell replicates before
5. a simpler process
Explanation:
The correct fill-in-the-blank answers are:
1. Bacteria reproduce through binary fission (already filled in)
2. A parent bacterial cell is able to survive in the presence of antibiotic penicillin. Subsequent generations from this parent will be resistant to penicillin
3. Something that potatoes and bacteria have in common is that they both reproduce through asexual reproduction.
4. In asexual reproduction DNA from the parent cell replicates before it produces daughter cells.
5. Asexual reproduction is a simpler process than sexual reproduction.
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Calculate the volume (in cm3
) of 54 g
of water at 1 ∘C
.
Express the volume in cubic centimeters to two significant figures.
Answers
How does an atom change if all of its electrons are removed?
p.s. I'll mark the first answer the brainliest if it is correct! ;)
a. The atom’s volume increases.
b. The atom’s mass increases.
c. The atom becomes positively charged.
d. The atom becomes negatively charged.
Answers
c. The atom becomes positively charged
if the electrons are removed it means theres no longer a negative charge to balance the positive charge of the protons in the atom
PLEASE ANSWER QUICKLY!!!!! Which of the following is NOT a function of your integumentary system?
A) Protecting against infection
B) Synthesizing vitamin D
C) Maintaining Fluid Balance
D) Stabilizing blood pressure
Answers
Answer: Must be a trick question.
Explanation: All of these are a function of the integumentary system.
Hope this helps <3
help
Nicole has 2 glasses on the counter: one of water and one of sugar-water. She is baking a cake and needs to use the sugar-water for the glaze. Both glasses look identical, but one contains a mixture and the other contains a compound.
Is sugar-water a mixture or a compound? Define mixtures and compounds, and explain how, without tasting it, Nicole can test to make sure she is using the sugar-water in the glaze.
Answers
Answer:
sugar-water is a mixture not a compound.(homogeneous mixture.)
Explanation:
Compounds are substances formed by the chemical combination of two or more elements. Mixtures are substances formed by physically mixing two or more substances together.
The solution of sugar in water is considered a mixture not a compound because the particles of sugar and water are not completely dissolve nor mixed in a fixed proportion or ratio. hope this helped :)
Answer: Nicole can take a small amount of sample from both of the glasses, she can place the samples in two separate containers and leave them out in the sun, so that the water gets evaporated. One of the two containers will contain a residue of sugar. The one containing the sugar residue, is the sugar-water solution.
how can you determine if the information you are reading is based on science or not?
Answers
Write a summary of what you have learned about how incoming forces and outgoing forces are related (newton's cradle)
Answers
The relationship between incoming and outgoing forces in Newton's Cradle can be understood through the following concepts:
Conservation of Momentum: In a closed system with no external forces, the total momentum before a collision is equal to the total momentum after the collision. In Newton's Cradle, the momentum of the incoming ball is transferred through the stationary balls and eventually to the last ball, which swings outward with a momentum equal to the initial ball's momentum.
Conservation of Energy: Similarly, the total mechanical energy (kinetic and potential) in a closed system remains constant. In the context of Newton's Cradle, the kinetic energy of the incoming ball is transferred through the stationary balls, and eventually to the last ball, which swings outward with kinetic energy equal to that of the incoming ball. Potential energy is also involved as the balls swing and momentarily come to rest at their highest points.
Elastic Collisions: Newton's Cradle demonstrates nearly perfect elastic collisions, wherein both momentum and kinetic energy are conserved. In reality, some energy is lost to heat and sound, making the collisions slightly inelastic. However, the demonstration is still a useful approximation for understanding the transfer of forces.
Force Transfer: The incoming force exerted by the first ball is transmitted through the intervening balls to the last ball without causing any significant movement of the middle balls. This occurs because the balls are very close together and the time taken for the force to be transferred is minimal, allowing the middle balls to remain nearly stationary.
In summary, Newton's Cradle demonstrates the relationship between incoming and outgoing forces through the principles of conservation of momentum and energy, elastic collisions, and force transfer. The device provides a clear visual representation of these fundamental concepts in physics.
URGENT HELP NEEDED! PLEASE ANSWER WITH EXPLANATION*
Much appreciated
1) An 85.0 g sample of copper is initially at 22.2 ∘C What is the final temperature if the sample absorbs 2.35 kJ of heat?
The specific heat of Cu is 0.385 J/(g^ Degree C)
-----------------------------------------------------------------------------------------------------------------------------
2) A 75.0 g sample of aluminum is heated to 65.3 ∘C then allowed to cool. What is the final temperature if the sample releases 2.07 kJ of heat?
The specific heat of Al is 0.903 J/(g degree C)
Answers
Answer:
1) 94.0° C, 2) 34.7°C
Explanation:
1)
Q=mcΔt° =mc(t2 - t1)
2350 J = 85.0 g* 0.385 J/(g*°C) *(t2 - 22.2°C)
t2 - 22.2°C = 71.81°C
t2 = 94.0° C
2)
Q=mcΔt° =mc(t2 - t1)
- 2070 J = 75.0 g * 0.903 J/(g*°C) *(t2 -65.3°C)
t2 - 65.3°C = - 30.56°C
t2 = 34.7°C
1. Using D10W and a vial of NaCl 4 mEq/mL, how many mL of NaCl are needed to prepare 250 mL of a
D10/NS solution?
a. 4.8mL
b. 9.6ml
c. 19.6mL
d. 154mL
Answers
To prepare 250 mL of a D10/NS solution using D10W and a vial of NaCl 4 mEq/mL, you would need 9.6 mL of NaCl. Normal saline (NS) contains 154 mEq/L of sodium chloride (NaCl). To prepare 250 mL of NS, you would need 250 mL * (154 mEq/L) = 38500 mEq of NaCl. Since the vial of NaCl contains 4 mEq/mL, you would need 38500 mEq / (4 mEq/mL) = 9625 mL = 9.6 mL of NaCl. So the correct answer is b. 9.6ml.
Which statement is true of the annual precipitation of a taiga forest?
Taiga forests are extremely dry.
Taiga are the wettest biome in the world.
Taiga receives more precipitation than tundra.
Taiga forests are drier than the tundra.
Answers
Answer:
i think c
Explanation:
help pls i will give brainlest
Answers
Answer: its 5ft tall and 12 inches
Explanation:
Brandy knows that chromosomes behave differently in meiosis and mitosis.
What do chromosomes do in meiosis but not in mitosis?
Each chromosome makes an exact copy of itself
Chromosomes line up in the middle of the cell
The homologous chromosomes form pairs
Chromosomes condense, becoming visible under a microscope
Answers
Answer:
chromosomes line up in the middle of the cell
What force causes the measurement of weight?
Answers
Answer:
Gravity
Explanation:
Gravity is what causes you to weigh more or less.
What is gravity? Gravity is the force that pulls things together. Larger things with larger masses have more gravity. When you are on Earth, you would weigh more than on the moon, about 6 times more, in fact, because the gravity on Earth is 6 times stronger.
HELP PLZ
In your own words, explains why gravity does not pulls us all the way to center of the Earth
Answers
Answer:
Gravity is acting upon every object on the earth, and it is pulling everything towards its center. But everything does not collapse to its center because the surface on which the object stands provides the reaction force upward (away from the center) and balances the weight of the object.
!! HELP WORTH 15 POINTS !!
How is the form of energy being changed when a student uses an electric sharpener to sharpen a pencil?
from mechanical to electrical
from electrical to mechanical
from thermal to mechanical
from magnetic to electrical
Answers
Answer:
B
Explanation:
Because the sharpener is attached to an electrical outlet
When a student uses an electric sharpener to sharpen a pencil then from electrical energy to mechanical energy. Therefore, option (B) is correct.
What is mechanical energy?Mechanical energy can be defined as the addition of kinetic energy and potential energy that is used to perform work. The total mechanical energy is conserved when the forces performing work are conservative in nature.
The principle of conservation of mechanical energy can be described as when an isolated system is under the influence of conservative forces, then the mechanical energy is constant. If a body moves in the opposite direction of a net force, the potential energy will increase and the speed of the object changes, the kinetic energy also changes.
Many devices are used to transform mechanical energy to or from other forms of energy, such as an electric motor converts electrical energy to mechanical energy,
An electric sharpener converts mechanical energy into electrical energy. Therefore, option (B) is correct.
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Imagine holding a tennis ball in front of a heat lamp for five minutes. What do you predict will happen to the temperature along the “equator” of the ball compared with the top and bottom?
Answers
Answer: It Would Be The Warmest As The Light is Falling Directly Upon It. The Top And Bottom Would Be Much Cooler Than The 'Equator'.
Explanation:
help me fill this page with the right answer please (17 lines minimum please)
Answers
CORRECT ANSWER GET BRAINLIEST
Which statement correctly describes the relationship between frequency and wavelength?
A. As the frequency of a wave increases, the longer its wavelength is.
B. As the frequency of a wave increases, the shorter its wavelength is.
C. As the frequency of a wave increases, its wavelength remains the same.
Answers
Let's check out
\(\\ \rm\rightarrowtail \lambda=\dfrac{c}{\nu}\)
lambda is wavelengthnu is frequency\(\\ \rm\rightarrowtail \lambda\propto \dfrac{1}{\nu}\)
If frequency is increased wavelength is decreased
Option B is correct
Answer:
he relationship between the frequency and wavelength of a wave is given by the equation=λf, where v is the velocity of the wave, λ is the wavelength an…
Explanation: :)