Explanation:
MgCl2, CaCl2, MgO, Na2S, CaH2, AlF3, NaH, KH, K2O, KI, RbCl, NaBr, CaH2 etc.hope it helps.stay safe healthy and happy..What quantity measures the amount of matter in an object?
Answer:
mass
Explanation:
define each of the terms below IN YOUR OWN WORDS
Environmental Value System:
Entropy:
Equilibrium:
Feedback:
Feedback, negative:
Feedback, positive:
Gaia:
Model:
Answer:
1- Environmental Value System or EVS is a worldview that molds the way both individuals and the societies they form perceive and therefore evaluate environmental concerns.
2-Entropy/ the measure of a system's thermal energy per unit temperature that is unavailable for doing useful work.
3-Equilibrium/a state of balance between opposing forces or actions that is either static
4-Feedback/a return of information about a result or the returned portion of a process.
5-Feedback,negative/ is a self-regulatory system in which it feeds back to the input a part of a system's output so as to reverse the direction of change of the output.
6-Feedback,positive/ is the amplification of a body's response to a stimulus.
7-Gaia/ all organisms and their inorganic surroundings on Earth are closely integrated to form a single and self-regulating complex system
8-Model/a physical and/or mathematical and/or conceptual representation of a system of ideas, events or processes.
Water molecules are polar covalent molecules. There is a partial negative charge near the oxygen atom and partial positive charges near the hydrogen atoms due to the uneven distribution of electrons between the atoms, which results in the formation of hydrogen bonds between water molecules. The polarity of water molecules contributes to many properties of water that are important for biological pro
Answer:
The water molecule, as a whole, has 10 protons and 10 electrons, so it is neutral. ... The unequal sharing of electrons gives the water molecule a slight negative charge near its oxygen atom and a slight positive charge near its hydrogen atoms.
Explanation:
Water molecules are polar molecules, they have a partially positive end and a partially negative end.
Water contains hydrogen and oxygen. The hydrogen and oxygen in water are combined in a ratio of 2:1.
However, oxygen is far more electronegative than hydrogen hence the compound is polar. The dipole in the molecule points towards the oxygen atom which bears the partial negative charge. Hydrogen bears the partial positive charge.
This polarity of water enables extensive intermolecular hydrogen bonding between water molecules. Properties such as high melting and boiling point of water owes to extensive intermolecular hydrogen bonding in water molecules. Indeed, all the physical properties of water are linked to polarity and hydrogen bonding.
Also, this polarity makes water molecule an excellent solvent for many substance especially in biological systems where it functions as the medium for many biochemical reactions.
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A Synthesis Reaction is
when energy
O is released in the form of heat
O when energy is released in the form of ice
O No answer text provided.
O No answer text provided.
Answer:
O is released in the form of heat
Explanation:
A Synthesis Reaction is when energy is released in the form of heat and light. The synthesis reaction is exothermic. Hence, first option is the correct answer.
HELP ME PLZ !!!!!!!!!!!!!
Answer:
Explanation:
Independent variable is the water dependent variable is the coconut water control group is the half sprayed with water the conclusion is coconut water does not work
What does the table indicate regarding the theory of the atom?
The table shows that the theory of the atomic structure changes as more evidences emerge.
Science is empirical in nature. The theories in science are based on weighty evidences.
Atomic theory began from the thinking of philosophers in ancient Greece. As time went on, the theories regarding the atom become a subject of empirical investigation.
Evidences were amassed regarding the structure of the atom leading to a successive paradigm shifts as new evidences emerge.
The table shown tells us that theories atomic structure changed over the years as new evidences emerged from the experiments of scientists.
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can you answer these questions about recycling glass ?
Answer:
they keep the plastic bottles and make a Christmas decoration from it to use
Why are weather satellites useful in areas that are affected by hurricanes?
Answer:
Since they are in a geostationary orbit, the GOES satellites provide continuous monitoring of the Earth's surface. They are able to constantly monitor the life cycle of significant weather such as hurricanes, tornadoes, flash floods, and hail storms.
Answer:
NOAA's GOES East and West satellites also show the storm's evolution by measuring infrared and visible radiation from the atmosphere and surface in real-time. These measurements tell us about wind at various levels in the atmosphere, sea surface temperatures and cloud properties.
Write the following number in Standard (Numeric) Form. 5.8x10-5
Answer:
the answer of this question is 0.000058
The standard (numeric) form of 5.8 x 10⁻⁵ is 0.00005.
What is the standard (numeric) form?The standard (numeric) form is a way of writing very large or very small numbers in a simplified form that uses powers of 10.
In this form, a number is expressed as a single digit between 1 and 10, multiplied by a power of 10. The power of 10 indicates the number of places the decimal point must be moved to the left or right to obtain the original number.
In the case of 5.8x10⁻⁵, the number is a very small one. The power of 10 is negative, which means that the decimal point must be moved to the left by 5 places to obtain the original number.
Here is the expansion of 5.8x10⁻⁵ in the standard (numeric) form:
5.8 × 10⁻⁵
= 5.8 ÷ 100000
= 0.000058
Therefore, 5.8x10⁻⁵ can be expressed in standard (numeric) form as 0.000058.
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Employers may not fire or other wise discriminate against an employee who does which of the following
Answer:
race, religion, sex, if they are 40 or older, have a disability, pregnancy/childbirth. hope that helped
Which of these could be a measurement of an object’s mass?
a. 24 newtons
b. 24 grams per milliliter
c. 24 meters
d. 24 grams
Answer:
Mass is a measure of the amount of matter in a substance or an object. The basic SI unit for mass is the kilogram (kg), but smaller masses may be measured in grams (g). To measure mass, you would use a balance.
what is the mass number of an atom with 3 protons, 4 neutrons, and 3 electrons
Answer:
The mass number is 7
Explanation:
mass number = protons + neutrons
= 3 + 4
= 7
What is the energy based on the motion of electrons
Answer:
Kinetic energy is motion; it is the motion of waves, electrons, atoms, molecules, substances, and objects. Electrical energy is the movement of electrons.
Explanation:
Mark me as the brainliest
Answer:
La electricidad es una forma de energía que se manifiesta con el movimiento de los electrones de la capa externa de los átomos que hay en la superficie de un material conductor. La electricidad es un fenómeno íntimamente ligado en la materia y a la vida.
Explanation:
dame coronar
a student wants to test the effect of different amounts of caffeine of different amounts of caffeine on the heart rate of daphnia, a small crustacean. What is the dependent variable?
The dependent variable is the heart rate of daphnia, a small crustacean.
WHAT IS INDEPENDENT AND DEPENDENT VARIABLES?
In an experiment, two variables are important. These two variables are the independent variable and dependent variable.
The independent variable is the variable that the experimenter alters or changes in order to bring about a change. On the other hand, the dependent variable is the variable that the experimenter measures or records in response to a change in the independent variable. In this question, a student wants to test the effect of different amounts of caffeine on the heart rate of daphnia, a small crustacean. The student will change the amount of caffeine, making it the INDEPENDENT VARIABLE while the heart rate of the small crustacean will be measured, making it the DEPENDENT VARIABLE.Therefore, the dependent variable is the heart rate of daphnia, a small crustacean.
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PLEASE HELP WITH MARK BRAINLIEST !!
Which of these is a special property of water? select all that apply
water has a high surface tension
none
water expands when it freezes
water molecules can stick together
Answer:
Water has high surface tension, and water molecules stick together
Explanation:
Answer: C and D
Explanation: Please give brainlyest
1. Why does Owelle disapprove of the Bohr model?
Answer:
The main problem with Bohr's model is that it works very well for atoms with only one electron, like H or He+, but not at all for multi-electron atoms
Explanation:
Owelle disapprove of the Bohr model because it was primarily for the hydrogen atoms. It couldn't elaborate on spectra of multi-electron atoms.
What are electrons?An electron is a negatively charged subatomic particle.
The main problem with Bohr's model is that it works very well for atoms with only one electron, like H or [tex]He^+[/tex], but not at all for multi-electron atoms
Hence, Owelle disapproves of the Bohr model.
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14. Donna can lift 25 kilograms. How many grams can she lift?
Answer:
25,000g
Explanation:
1kg is 1000g, 25*1000 = 25,000
Describe what happens to the arrangement and movement of particles when a substance boils.
Answer:
When boiling a substance, the particles obtain more kinetic and potential energy from the heat being delivered. The kinetic energy means that the particles starts moving more intensely, and the potential energy means that the particles start to move away further from each other, which means the substance expands in volume.
Explanation:
When a liquid is heated, the particles gain energy and begin to move faster and faster, expanding the liquid. As the liquid warms, the most energetic particles at the surface escape as vapor from the surface.
What are particles?A particle is a small localized object to which several physical or chemical properties, such as volume, density, or mass, can be assigned in the physical sciences.
Atoms are small units of matter that contain a number of particles known as subatomic particles. The term particle, on the other hand, refers to any small object.
As a result, the primary distinction between atoms and particles is that atoms are small units composed of multiple particles, whereas particles are minute portions of matter.
When a fluid is subjected to heat, the particles acquire energy and start moving extremely fast, causing the liquid to expand.
The much more energetic particles at the exterior getaway as vapor phase from the surface as the liquid warms.
Thus, the arrangement and movement of the particles gets disturbed when a substance is boiled, and it gets escaped as vapor.
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What makes us human?
Answer:
Human beings are anatomically similar and related to the great apes but are distinguished by a more highly developed brain and a resultant capacity for articulate speech and abstract reasoning.
Explanation:
fats that come from animlas
saturated fats are are mainlyderived from animals eg butter and lard and they are solid at room temperature
Answer is needed fast
Answer:
Shortest distance between 2 points is called displacemen.
Explanation:
This is because displacement means the distance between 2 points or really the negative distance.
Answer:
acceleration goes on increasing during uniform motio
this is wrong
Explanation:
Because during uniform motion acceleration is always zero .
how does sublimation occur and why does it not pass through the liquid phase?
Answer:
Sublimation is the process of transformation directly from the solid phase to the gaseous phase, without passing through an intermediate liquid phase. ... This is because the pressure of their triple point is very high and it is difficult to obtain them as liquids.
when a scientist is beginning the process what is the key term she or he must ask in order to begin?
A: when or where
B:why or how
C: who or how many?
D: which or what
plz help thank you
Answer:
B- why or how because any scientist deals with matter it's relationships ,properties and its composition which can be inferred from the questions why and how
Theories change because new technology improves our ability to observe the natural world.
O True
O False
Answer:
True
Theories change because new technology improves our ability to observe the natural world. answer choices.
What happens when chalk powder and sand are added to water give reasons
Answer:
Look in explanation:
Explanation:
Chalk is composed of Ca(CO3).
This will not dissolve in H2O because the ionic bonds between the calcium and carbonate are too powerful to be disrupted by water so it will have no effect.
No reaction takes place when sand is mixed with water and the sand would just sink down.
what is the volume of a piece of metal that has a density of 6.68g.cm^3 and has a mass of 1975 g?
Answer: 296 grams/cm^3 (3 sig figs)
Explanation: Divide the mass by the volume to get grams/cm^3.
Do you agree with the law that requires a table of nutrition facts to be published on food labels? Explain your reasoning
Answer: Yes,
Explanation: Yes, because people should know what there eating, for multiple reasons. If someone was allergic to to something in it and did not know but ate it, it would not be good. Also someone being on a diet and is avoiding certain fats should know.
(If you use this I recommend you use a Paraphrasing Tool, because I've seen people get busted for having exact same words)
David noticed that when he ate chocolates they melted in his hands faster when his hands were slightly wet from sweat than his hands were dry. He was curious to see if other liquids would affect how fast they would melt? He decided to test out four different liquids, water, milk, lemon-lime soda, and orange juice. He then timed how long it took them to melt. He thought the chocolate would melt faster in orange juice that the other liquids because it is more acidic. The results are below.
QUESTIONS:
1) What was David's Question?
2) What was David Hypothesis?
3) What his independent Variable?
4) What his Dependent variable?
Answer:
1. What liquid would melt the chocolate faster?
2. He thought that the orange juice would melt the chocolate faster.
3. The independent variable is the liquids.
4. The dependent variable is the chocolate.
Explanation:
1. He was curious to see if other liquids would affect how fast they would melt? This is his question.
2. He thought the chocolate would melt faster in orange juice than the other liquids because it is more acidic.
He made a prediction or a hypothesis.
3. His independent and dependent variables are chocolate and liquid. Since he wants to know how fast the chocolate melts in different liquids, how fast the chocolate melts is dependent on the liquid that he uses.
how to overcome overshot in tritation
Answer:
The method involves students exhaling air using a plastic straw into the over-titrated acid-base mixture, which turned pink-colored with phenolphthalein indicator.
Are the atoms of gold and carbon always moving or always motionless?
always moving
Or
always motionless
