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Related Questions
The beginning of changing starch to sugar occurs in the stomach.
True or False
I NEED ANSWER'S FAST
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1.23 What exponential notation do the following abbreviations represent: (a) d, (b) s (c) f, (d) , (e) M, (f) k, (g) n, (h) m, (i) p?
Answers
Does a radio have energy if it’s turned off
Answers
Answer:
no
Explanation:
If a person consumes 50% of their daily kilocalories from carbohydrates and 30% from protein, what percentage of their daily kilocalories will come from fat?
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The percentage of daily kilocalories of the person that come from fat is 20%.
The diet of a person is composed mainly of carbohydrates (C), proteins (P) and fat (F), that is, the sum of the 3 sources amount to 100% of the consumed kilocalories. Given that 50% of the daily kilocalories of this person come from carbohydrates and 30% come from protein, the percentage that comes from fats is:
[tex]C + P + F = 100\%\\F = 100\% - C - P\\F = 100\% - 50\% - 30\% = 20\%[/tex]
The percentage of daily kilocalories of the person that come from fat is 20%.
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b. 8500°C 600°C d. 3700°C с C 9. Which organic acid is found in apple a. Tannic acid b. Malic acid c) Lactic acid d citric acid
Answers
Answer:
b. Malic Acid
Explanation:
Malic (organic) Acid is found in apple.
GL
10. Group number tells us the number of
an atom has.Groups and families have__ __ properties
Answers
Answer:
similar chemical properties?
Explanation:
On the basis of Rutherford's experimental observations, which of the following statements predicts the
structure of the atom?
Check all that apply.
► View Available Hint(s)
In an atom, all of the positive and negative charges are randomly distributed.
In an atom, negatively charged electrons are small particles held within a positively charged
sphere.
In an atom, negatively charged electrons are dispersed in the space surrounding the positively
charged nucleus of an atom.
In an atom, most of the mass and the positive charge are located in a small core within the
atom called the nucleus.
Answers
Answer:
3 and 4
Explanation:
After Rutherford did the alpha particle scattering experiment, he realised that most of the atom must be empty space, and the positive charge needed to be concentrated in the middle of the atom (in the nucleus).
This was because most of the alpha particles went straight through the gold sheet but some were deflected to the side or straight back.
This led to the nuclear model, where Rutherford concluded that most of the mass and all of the positive charge was concentrated in the middle of the atom in the nucleus, and the electrons existed in a sort of negatively charged cloud around the nucleus.
hope this makes sense!
why does oil floats on water?
Answers
Answer:
it depends on density which causes oil to float on water
Explanation:
imagine wearing socks soaked oil and walked in water :0
which mixture is salt solution
Answers
Answer:
Below
Explanation:
Salt solution, aka saline solution, is a homogeneous mixture. This means that the mixtures composition is completely uniform throughout. If you were to look at a saline solution, it would just look like plain water because the salt is dissolved (it looks the exact same in the entire mixture).
Something like bean soup would be an example of a heterogeneous mixture. You can see all the beans and vegetables as components of one mixture.
Hope this helps! Best of luck <3
The atomic number is the same as the number of ________.
Answers
Answer:
number of electrons
Explanation:
(happy to help)
what is precipitation?
Answers
Answer:
Precipitation is any liquid or frozen water that forms in the atmosphere and falls back to the Earth. It comes in many forms, like rain, sleet, and snow. ... Most rain actually begins as snow high in the clouds. As the snowflakes fall through warmer air, they become raindrops.
If you are working on something that you really care about, you don't have to be pushed.How many moles of molecules and atoms are in 3.07g sample of SO3
Molecules____
Atoms_______
Answers
Answer:
ammonia molecules. Similar factors may be derived for any pair of substances in any chemical equation. Example 4.8. Moles of Reactant Required in a Reaction.
Explanation:
Steel is element, compound, heterogeneous mixture, solution, suspensión or coloideo.
Answers
Answer:
Steel is an example of a solid-solid solution (aka an alloy).
Explanation:
How do speed and velocity differ from each
other? Give examples to support your
statement.
Answers
Answer:
Speed is the time rate at which an object is moving along a path, while velocity is the rate and direction of an object's movement. ... For example, 50 km/hr (31 mph) describes the speed at which a car is traveling along a road, while 50 km/hr west describes the velocity at which it is traveling.
Which of the following is true about nuclear fusion and stellar life cycle?
1. Nuclear fusion has the ability to occur easily in everyday situations.
2. Nuclear fusion occurs in the core of protostar.
3. Nuclear fusion occurs in the core of a protoplanet.
4. Nuclear fusion occurs the atmosphere of a star.
Answers
Answer:2. Nuclear fusion occurs in the core of protostar.
Explanation: The evolution of a star helps us the understand Nuclear fission and its contribution into the stellar life cycle.
The life cycle of a star begins in the nebula where it is merely composed of matter, gas and dust. As time progresses, gravitational force causes the hydrogen gas in the nebula to start to spin, With increased spinning, the constituents are heated up and forms a Protostar.
Now because of the unstable Protostar in the core of the cloud is burning at a temperature of about 15,000,000 degrees Fahrenheit, Nuclear fusion occurs. This converts the hydrogen gas to helium in the core causing the protostar to become stable and glow like a main sequence star.
Also the inner shell contracts and becomes unstable as the helium replaces hydrogen while the outer shell of the star still hydrogen dense expands outwards and cools forming a giant star.
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como se relaciona la fisica con la quimica
Answers
Answer:
Bueno, ambos son asignaturas de ciencias ...
Explanation:
Explicación:
Y ambos son necesarios para comprender mejor el mundo y el universo, junto con la biología y las matemáticas. Hay una materia que se basa en gran medida tanto en la química como en la física, que es la química física.
La química física estudia principalmente la energía, los orbitales atómicos, la termodinámica y la mecánica cuántica.
En química, puede aprender sobre átomos, iones y núcleos de un átomo y demás. Todos esos modelos fueron creados gracias a grandes físicos como Niels Bohr y Erwin Schrodinger.
Esos son algunos ejemplos en los que creo que la química está relacionada con la física.
Enlace de respuesta
nuclei
10. Nuclear power plants release energy by
Answers
Answer:
Nuclear Fission
Explanation:
Nuclear power plants release energy by nuclear fission.
a sign in town gives the limit at 50.00 km/hr. what is this speed in cm/sec
Answers
What question do you have about states of matter and changes in the states of matter?
PLZZ ASK A GOOD QUESTION
Answers
can a gas in any way be turn straight into a solid skipping the liquid form.
Can mixing colors cause a reaction like bubbles or cause it to look more mettalic, simply because of that or does it depend on the paint chemicals in the product
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It depends on the paint chemicals. You mentioned bubbles, which refers to production of gas. This would be a chemical change. And although you can mix a metallic pigment to create a hybrid of color and metallic pigment, the chemicals within the metallic pigment would definitely differ atomically structured. After all, the metal particles within the paint picks up and reflect light, hence the shine. (Depends on what type of metallic paint however).
Which system(s) measure time in seconds? (2 Points) Metric System CGS Customary System MKS (multiple answers)
Answers
Which of the following best explains the distinctive colors of specific elements when used in
fireworks?
A
the number of electrons in the atoms
B
electrons moving from an excited energy state to the ground state
С
the number of neutrons in the atoms
D
electrons transferring from one atom to a different atom
Answers
The distinctive colors of specific elements when used in fireworks owes to electrons moving from an excited energy state to the ground state.
Neils Bohr in his atomic model postulated that electrons in atoms are found in energy levels. Each energy level corresponds to a fixed amount of energy.
The lowest energy level in the atom is called the ground state and higher energy levels are called excited states.
When an electron receives energy, it can move from a ground state to excited state.
This excess energy is given out as visible light of a characteristic wavelength or color when the electron is moving from an excited energy state to the ground state.
This accounts for the distinctive colors of specific elements when used in
fireworks.
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O nome oficial do composto abaixo é: *
2,2,4-trimetilpentano.
2,2,3-trimelpentano.
2,2-dimetilpentano.
2,4,4-trimetilpentano.
2-metilpentano
Answers
2,2,4-trimetilpentano is the answer.
Please help me, I really need it, God Bless you <3
Answers
#1
[tex]\\ \sf\longmapsto {}^{88}_{38}Sr^{2+}[/tex]
As 2 electrons are donated Hence the No of electrons =38-2=36#2
[tex]\\ \sf\longmapsto {}^{51}_{23}V^{3+}[/tex]
As 3 electrons donated the no of electrons=23-3=20#3
[tex]\\ \sf\longmapsto {}^{55}_{26}Fe^{3+}[/tex]
No of neutrons=55-26=29#4
[tex]\\ \sf\longmapsto {}^{112}_{48}[/tex]
As 2 electrons are donated no of electrons =48-2=46#5
[tex]\\ \sf\longmapsto {}^{210}_{82}Pb^{2+}[/tex]
No of neutrons=210-82=128The liter is a measurement of which of the following qualities volume,teampature,mass,density
Answers
Answer:
Volume
Explanation:
Volume is the quantity of three-dimensional space enclosed by a closed surface, for example, the space that a substance (solid, liquid, gas, or plasma) or 3D shape occupies or contains.[1] Volume is often quantified numerically using the SI derived unit, the cubic metre. The volume of a container is generally understood to be the capacity of the container; i.e., the amount of fluid (gas or liquid) that the container could hold, rather than the amount of space the container itself displaces. Three dimensional mathematical shapes are also assigned volumes. Volumes of some simple shapes, such as regular, straight-edged, and circular shapes can be easily calculated using arithmetic formulas. Volumes of complicated shapes can be calculated with integral calculus if a formula exists for the shape's boundary. One-dimensional figures (such as lines) and two-dimensional shapes (such as squares) are assigned zero volume in the three-dimensional space.
The volume of a solid (whether regularly or irregularly shaped) can be determined by fluid displacement. Displacement of liquid can also be used to determine the volume of a gas. The combined volume of two substances is usually greater than the volume of just one of the substances. However, sometimes one substance dissolves in the other and in such cases the combined volume is not additive.[2]
In differential geometry, volume is expressed by means of the volume form, and is an important global Riemannian invariant. In thermodynamics, volume is a fundamental parameter, and is a conjugate variable to pressure.
The particles in a solid are packed very closely together in a rigid, orderly
arrangement. They are held together by the attractive forces that act
between all particles of matter. Solids, therefore, have fixed volumes and
shapes. In the solid state, particles cannot break away from their fixed
position; they can only vibrate in place.
The particles that make up a liquid move more rapidly than those in a solid
do. This causes the particles in the liquid to overcome some of the
attractive forces between them, and the particles can slide freely around
each other.
The particles of a gas are very far apart and move rapidly compared to
particles in solids or liquids. At these distances, the attractive forces
between gas particles have a lesser effect than they have on particles in
liquids and solids. In general, the volume of a liquid or solid increases
greatly when it forms a gas. However, the density of the gaseous state of
most substances is approximately one-thousandth the density of the liquid
state.
Plasma is a gas in which the particles have so much energy that they
become electrically charged. Plasma is the most common state of matter in
the universe, with more than 99.99% of observable matter in the universe
being plasma. Most of the matter of the sun is plasma. Stars and lightning
are also examples of plasma. However, this state is not experienced in the
physical and chemical changes we encounter every day on Earth.
Answers
plasma can be produced artificially in a laboratory but only for a few nanosecond or minutes
Explanation:
in other to maintain plasma reactions you are going to need state of the art technology such as particle accelerators but even those cannot meet the full amounts of keeping plasma reactions stable for a long time the reason for that is because plasma reactions require a lot of energy
Which of the following is true regarding charge interactions?
A. A positive charge attracts a positive charge
B. A positive charge repels a negative charge
C. A negative charge attracts a negative charge
D. A negative charge repels a negative charge
Answers
Explanation:
D : a negative charge repels a negative charge because like charges repel unlike the unlike charges that attract according to the fundamental law of electrostatics
2. What do you think may have happened to the "bad" chocolate bar? Do you think
it was made poorly? Or do you think something happened to the chocolate on the
way to the customer? Also, is there a way Charlotte can avoid this issue in the future?
Explain.
Answers
Answer:
2
Explanation:
Element or Compound
Krypton
Lye
Graphite
Vinegar
Answers
Lye- sodium hydroxide, compound
Graphite- element
Vinegar- is acetic acid, compound( aqueous solution)
What safety equipment is often the minimum requirement for personal protection in a laboratory?
A.gloves
B.safety goggles
C.fire blanket
D.apron
Answers
Answer:
Hi, There! Your Answer Is Below.
A. gloves
Explanation:
Personal protective equipment, commonly referred to as “PPE”, is equipment worn to minimize exposure to a variety of hazards. Examples of PPE include such items as gloves, foot and eye protection, protective hearing devices (earplugs, muffs) hard hats, respirators and full body suits. Understand the types of PPE.
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Have A Wonderful Day! :)
Safety equipment provides personal protection in a laboratory and includes gloves, safety goggles, aprons, etc. A fire blanket is not often required in labs. Thus, option C is correct.
What is safety equipment?Safety equipment is defined as the material used in laboratories to provide protection against reactive dangerous chemicals, gases, spills, radiological emissions, and other hazardous events.
Gloves, eyewear, aprons, lab coats, safety goggles, first aid kits, and fire extinguishers are the most important personal safety protection equipment. They are used so to avoid any chemical spills on the skin, eye irritation, etc.
Fire blankets are not generally used as safety equipment in laboratories though they are used in fire emergencies to put the fire out on a person or an object by cutting down the supply of oxygen.
Therefore, option C. a fire blanket is not used for personal protection.
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