Answer:
Acid btw I am new in Brainly
The atomic number is the same as the number of ________.
Answer:
number of electrons
Explanation:
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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?
como se relaciona la fisica con la quimica
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.
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What safety equipment is often the minimum requirement for personal protection in a laboratory?
A.gloves
B.safety goggles
C.fire blanket
D.apron
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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An atom has 15 protons, 15 electrons and 16 neutrons. What is the atomic
number and mass number?
Atomic number = 15 and mass number = 31 where an atom has 15 protons, 15 electrons and 16 neutrons.
What is an atom?An atom consists of a central nucleus that is usually surrounded by one or more electrons.
The atomic number of an atom is equal to the number of protons in the nucleus of an atom or the number of electrons in an electrically neutral atom. Atomic number = Number of protons.
Mass number is the sum of the numbers of protons and neutrons present in the nucleus of an atom.
Hence, atomic number=15 and mass number=31.
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How do speed and velocity differ from each
other? Give examples to support your
statement.
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.
Does a radio have energy if it’s turned off
Answer:
no
Explanation:
Identify the state of matter represented by each particle model.
A liquid
B solid
c gas
the internolecular forces in a solid state are packed and leave no spaces and in a liquid are semi packed and leave little space and in gas the particles are loose
O nome oficial do composto abaixo é: *
2,2,4-trimetilpentano.
2,2,3-trimelpentano.
2,2-dimetilpentano.
2,4,4-trimetilpentano.
2-metilpentano
2,2,4-trimetilpentano is the answer.
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.
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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What is the mass of a 15 cm^3 piece of iron if the density of iron is 7.87G/ML
Answer:
118.05 grams
Explanation:
mL = cm³
Density = mass/volume
Let x = mass
Our equation will look like this: x/15 = 7.87
Multiply both sides by 15 to isolate the variable, x
15(x/15) = 15(7.87)
15x/15 = 118.05
x = 118.05
How many moles of molecules and atoms are in 3.07g sample of SO3
Molecules____
Atoms_______
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:
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?
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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The beginning of changing starch to sugar occurs in the stomach.
True or False
I NEED ANSWER'S FAST
When iron and oxygen react in the presence of water or moisture in the air.
Combustibility
Rusting
Evaporating
Digesting
Steel is element, compound, heterogeneous mixture, solution, suspensión or coloideo.
Answer:
Steel is an example of a solid-solid solution (aka an alloy).
Explanation:
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
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
Please help me, I really need it, God Bless you <3
#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=1283.25 x 10+8 nm2 divide by 6.5 x 10+6 nm =
Answer: 50 nm
Explanation: Two steps:
1. Divide 3.25/6.5 = 0.5
2. Divide 10^8/10^6 = 10^2
nm^2/nm = nm
Combine: 0.5x10^2 nm
or 50 nm
Give the abbreviations of each metric unit for the following:
Mass
volume
temperature
time and
length
Answer:
mass = kg
volume = cubic meters
time = seconds
length = meters
temperature = degrees Celsius
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.
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!
which mixture is salt solution
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
1 Rajah 1 menunjukkan satu contoh mikroorganisma. Diagram 1 shows an example of microorganisms. 0 Rajah 1 / Diagram I Antara yang berikut, yang manakah pengelasan yang betul bagi mikroorganisma ini? Which of the following is the correct classification for this microorganism? A Alga / Algae B Fungi / Fungi C Virus / Virus D Bakteria / Bacteria
Answer:
d. Bacteria is the correct classification
Which option is a valid hypothesis in the correct format?
1. if a cotton plant receives 100mL of water everyday, it will display steady growth.
2. If a cotton plant displays steady growth, it will receive 100 mL of water every day.
3. If cotton plants need a consistent amount of water to grow steadily, then a cotton plant that receives 100 mL water every day will display steady growth.
4. If cotton plants need a consistent amount of water to grow steadily , then a cotton plant that displays steady growth will receive 100 mL of water every day.
Answer:
4. If cotton plants need a consistent amount of water to grow steadily, then a cotton plant that displays steady growth will receieve 100 mL of water every day.
Explanation:
Hypotheses are written in the format of "If... then...". It should include information on both variables to arrive at a conclusion point.
What is the mass of a substance that has a volume of 88.0 cm and a density of 2.2 g/cm?
Answer:
193.6
Explanation:
d=m/v
2.2=x/88
2.2×88=193.6
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.
Answer:
2
Explanation:
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
Answer:
b. Malic Acid
Explanation:
Malic (organic) Acid is found in apple.
GL
nuclei
10. Nuclear power plants release energy by
Answer:
Nuclear Fission
Explanation:
Nuclear power plants release energy by nuclear fission.
The liter is a measurement of which of the following qualities volume,teampature,mass,density
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.
a sign in town gives the limit at 50.00 km/hr. what is this speed in cm/sec
