Answer:
1. D
2. A
Explanation: Those are the only ones i know
please help!will give brainiliest
Answer:
nuetrons
Explanation:
some helium atoms just a little thick and packing extra neutrons
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Answer in your OWN WORDS!
A gardener discovers that her prize hydrangeas have turned from pink to blue. What can you say about the soil in which the flowers are growing?
Generally speaking, acidic soil, with a pH lower than 6.0, yields blue or lavender-blue hydrangea blooms. Alkaline soil, with a pH above 7.0, promotes pinks and reds. With a pH between 6 and 7, the blooms turn purple or bluish-pink. To lower your pH, add garden sulfur or aluminum sulfate to your soil.
The secret's in the soil
Let’s look at why pH is so important.
Most major plant nutrients are more accessible at a pH of 6 to 6.5. A pH that is too high or too low can keep plants from absorbing nutrients from the soil. The nutrients are unavailable — or not absorbable — to the plant because of soil's chemistry. This problem can manifest itself in a variety of ways, but in the case of hydrangeas, the bloom color changes.
Color variation in hydrangeas is due to the presence or absence of aluminum compounds in the flowers. If aluminum is present, the color is blue. If it is present in small quantities, the color is variable between pink and blue. If aluminum is absent, the flowers are pink.
Answer:
There is somehting in the water or the soil
Explanation:
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ANSWER IN YOUR OWN WORDS!
How does the pH of an acid compare with the pH of a neutral solution?
Answer:
The pH scale is used to rank solutions in terms of how acidic or how basic they are. ... This pH value of 7 is important because it indicates a neutral solution. All other substances are compared to this neutral point. Any solution that has a pH of less than 7 is considered acidic, and anything above a pH of 7 is basic.
Explanation:
Answer:
its #5
Explanation:
I need help on this ASAP
Answer:
Its acrylic, nylon, and polyester :)
Explanation:
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ANSWER IN YOUR OWN WORDS!
How does the pH of an acid compare with the pH of a neutral solution?
Answer:
The pH of an acid is lower than a neutral solution.
Explanation:
A neutral solution is 7.0 and anything below a 7.0 is considered acidic.
Answer:
Brainliest
Explanation:
pH is a major parameter that is measured in determining the water quality. It indicates whether a water source is of good quality to be used for drinking purposes and other house hold needs. In addition, maintaining the appropriate pH is critical for some chemical reactions as well. The pH of a system is dependent on the concentration of hydrogen ions present in that system. The concentration of hydrogen ions in a solution is the amount of hydrogen ions (in the units of mol) present in a liter of solution. pH is the logarithmic value of the inverse of the hydrogen ion concentration. This is the relationship between hydrogen ions and pH.
Explain why, even with computer models and data, weather predictions can be incorrect. Use complete sentences. (95 points)
Answer:
Weather predictions can be incorrect because they are just educated guesses. It is not factual information and a guess can be wrong even if they are educated based on factual data. It is still a guess.
hope this helps : )
How has the mechanized clock impacted society today?
Answer:
It is the mechanical clock, and according to many historians, it was the clock that changed everything and deserves to be called as the key factor of the industrial age. Mechanical clocks enabled people to measure time in ways that were not possible before, and because of it, our lives were changed forever.
Explanation:
Answer:
It is the mechanical clock, and according to many historians, it was the clock that changed everything and deserves to be called as the key factor of the industrial age. Mechanical clocks enabled people to measure time in ways that were not possible before, and because of it, our lives were changed forever.
Explanation:
opppsss we said the same thing sry
A student is using a microscope to observe samples taken from pond water. She notices something that she thinks may be a living thing. Which feature would BEST support that the unknown sample is a living thing?
A.
Since all living things are green, observing an unknown sample is green will provide evidence that it is a living thing.
B.
Since all living things are made up of cells observing a cell in the unknown sample will provide the evidence that it is a living thing.
C.
Since all living things make bubbles, observing an unknown sample that is making bubbles will provide the evidence that it is a living thing.
D.
Since all living things move, observing something move in the unknown sample will provide the evidence that it is a living thing.
Its not chemistry btw its science regular
The known laws of chemistry and physics can explain the origin of matter.
True False
Answer:
False
Explanation:
PLEASE HELP ME
WILL GIVE BRAINLIEST AND 30 POINTS
Why does oxygen bond with hydrogen to make water?
A. Because oxygen only has 6 electrons in its outer shell and it wants 8. It binds with 2 hydrogens because each hydrogen atom has 1 electron in its outer shell.
B. Because oxygen only has 8 electrons in its outer shell and it can take 4 more. It binds with 2 hydrogen atoms because each hydrogen atom can carry 2 electrons in its outer shell.
C. Because oxygen only has 2 electrons in its inner shell and it needs 6 more to make 8. It binds with 6 hydrogens to fill up its shell.
D. No answer text provided.
Please help with this question!
What is true in a saturated solution?
A. No more solute can be dissolved.
B. No more solution can be made.
C. The concentration cannot be decreased.
D. No more solvent can be dissolved.
Answer:
A ) because no more solute can be dissolved
Li₃N + 3 NH₄NO₃ 3 LiNO₃ + (NH₄)₃N
What type of chemical reaction is the equation above?
thank you!
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Answer in YOUR OWN WORDS! Would a substance with a high pH turn litmus paper red or blue? Explain your answer.
Answer:
Above pH 8.3, a blue litmus paper stays blue but turns red in an acid. A neutral solution, or one between the upper and lower values of litmus paper, pH 4.5 and 8.3, will not change the paper's color
Explanation:
Answer:
A basic (alkaline solution) chemical with high pH (>7) turns red litmus paper blue.Please answer this!!!!!!!!
Answer:
the anwe is d if i remember right
Answer:
answer is d
Explanation:
What biome/environment do you find at the high and dry belts?
a Tropical rainforests
b Temperate forests
c Deserts
d Tundra
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Answer in your OWN WORDS!
A gardener discovers that her prize hydrangeas have turned from pink to blue. What can you say about the soil in which the flowers are growing?
Answer:
There must be somehting in the water or soil
Explanation:
For thousands of years, scientists didn’t know cells existed. What major invention helped open their eyes to the world of cells?
The invention of the wheel allowed for faster travel allowing scientists to meet to discuss new ideas.
The invention of the telegraph allowed for faster communication between scientists.
The invention of the microscope allowed scientists to see smaller things in greater detail.
The invention of the telescope gave scientists an opportunity to magnify larger things in greater detail.
Answer: microscope?
Explanation:
I'm not exactly sure it could even be an invension of some kind of test or experiment
Sarah was watching the weather forecast on television. The high temperature for the day was to be 33°F and the relative humidity was at 93 percent. A fast moving cold front was moving in her direction. What type of weather should Sarah expect?
The high temperature for the day was to be 33°F and the relative humidity was at 93 percent. A fast moving cold front was moving in her direction. Winter weather should Sarah expect.
What is weather?The variety of activities that take place daily in our environment make up the weather. The weather varies around the globe and changes over the course of a few minutes, hours, days, and weeks. The troposphere, the region of Earth's atmosphere closest to the surface, is where most weather occurs.
Sarah was watching the weather forecast on television. The high temperature for the day was to be 33°F and the relative humidity was at 93 percent. A fast moving cold front was moving in her direction. Winter weather should Sarah expect.
Therefore, winter weather should Sarah expect.
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what answer should i put and the box right answer will get brainliest
Answer: x + 20
Explanation:
Please answer this!!!!!!
Answer:
C
Explanation:
Explain how atoms are aligned in a magnet in terms of the north and south poles.
pls help me n pls no answers from the internet or I will be expelled from school.
Answer:
All magnets have north and south poles. Opposite poles are attracted to each other, while the same poles repel each other. When you rub a piece of iron along a magnet, the north-seeking poles of the atoms in the iron line up in the same direction. The force generated by the aligned atoms creates a magnetic field.
Answer:
All magnets have north and south poles. Opposite poles are attracted to each other, while the same poles repel each other. When you rub a piece of iron along a magnet, the north-seeking poles of the atoms in the iron line up in the same direction. The force generated by the aligned atoms creates a magnetic field.
Explanation:
help plz! Who is credited with the invention of the modern periodic table?
Answer:
it's Dmitri Mendeleev, but actually made on the concept of atomic number proposed by henry moosely
Answer:
Dmitri Mendeleev
Explanation:
I talked about this before w/ my teacher a while back so, I know
in this cut-away image of an atom, where is the red arrow most likely pointed at the greatest probability of locating an electron
Answer:
c
Explanation:
Whats the Chemical Compound for sugar?
PLS HELP!! WILL GIVE BRAINLY!!
Answer:
2. Mechanical
3. Chemical
4. Mechanical
5. Mechanical
6. Chemical
7. Mechanical
8. Mechanical
9. Mechanical
10. Chemical
Explanation:
Where is the Oort cloud located?
a. between the orbit of Mars and the orbit of Jupiter
b. in the different orbits between the sun and Neptune
c. beyond the Kuiper belt, at the farthest end of the solar system
d. all over the solar system and between the orbits of the planets
Answer:
c
Explanation:
Answer:
"C" beyond the Kuiper belt, at the farthest end of the solar system
Explanation:
If it takes 3 hours to drive a distance of 192km on a freeway, what would be your average speed in km/h? You can use a calculator.
Answer:
The average speed in km/h would be 64km per hour.
Speed = Distance /Time
192/3 = 64
Explanation:
I hope this helps
which word describes the forces acting on the car?
inertial
balanced
buoyant
unbalanced
Answer:
inertial okokokok
The force acting on the car is unbalanced in horizontal direction. The force acting to the right is 5000 N and that to the left is 6000 N. So there will be a net force of 1000 N to the left side.
What is unbalanced force?Force is a vector quantity with a magnitude and direction. Force acting on a body able to deform it or to make a change in its state of rest or motion. The net force acting on an object depends on both the magnitude and direction of all kinds of forces acting on it.
If two forces are acting from the side, then the net force will be the sum of their magnitudes. If the forces are acting in the opposite directions, they will cancel each other or balanced.
In the given figure, the force acting upward and downward are equal in magnitude and will cancel each other. But, those acting to the left and right are not balanced and thus there will be a net force of 1000 N to the left.
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Hi! Which of the following decreases kinetic energy of solvent molecules? ( I need this handed in quickly!)
A. Decreasing the pressure
B. Not stirring the solution
C. Decreasing the contact area between solvent and solute
When a drop of water sits on a leaf, It looks like it has a skin. What is this “skin” a result of? Explain.
What does adding soap do in terms of dissolving solutes? Explain.
Which solution will contain a higher concentration of iodide ions, 0.25 mol/L calcium iodide or .45 mol/L potassium iodide?
Thank you so much! I hope you have a great day!❤️
Answer:
c
Explanation:
According to the forces of attraction, decreasing the contact area between solvent and solute decreases kinetic energy of solvent molecules.
What are forces of attraction?Forces of attraction is a force by which atoms in a molecule combine. it is basically an attractive force in nature. It can act between an ion and an atom as well.It varies for different states of matter that is solids, liquids and gases.
The forces of attraction are maximum in solids as the molecules present in solid are tightly held while it is minimum in gases as the molecules are far apart . The forces of attraction in liquids is intermediate of solids and gases.
The physical properties such as melting point, boiling point, density are all dependent on forces of attraction which exists in the substances.
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