What part of the atom tells you what element it is?
Number of electrons
Number of Photons (the light particle)
Number of Neutrons
Number of Protons
Answers
Answer: I believe it is the number of protons.
Related Questions
PLEASE HELP
How many electrons can be held in a sublevel n=4?
Answers
how does skin protect the body from pathogens?
A it produces whit blood cells that reconize and eat pathogens.
b it transsfers pathogens to lymph and blood plasma
c it traps pathogens in oil and seat produced by glands.
d. it has hairs that sweep pathogens away from the body
Answers
Answer:
C: It traps pathogens in oil and sweat
Explanation:
The skin has oil and sweat which kills pathogens as they are like a waterbarrier.
The skin protects the body from pathogens by trapping pathogens in oil and sweat produced by glands. Thus, the correct option for this question is C.
What are Pathogens?Pathogens may be defined as those living organisms which are capable of inducing diseases in other living organisms including humans. Some examples of pathogens include bacteria, fungi, protozoa, etc.
Skin is considered the first line of defense against pathogens in humans. This is because skin significantly consists of sebaceous and sweat glands that consistently secrete oils and sweat that trap the pathogens and eliminate them from entering the body.
Therefore, the skin protects the body from pathogens by trapping pathogens in oil and sweat produced by glands. Thus, the correct option for this question is C.
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which material allowed house to have highest average internal Temperature? explain your answer
A.Fiberglass
B.Brick
C.Soil
Answers
Brick retains the most heat out of all the choices.
salks vaccine trail was a double-blind experiment true or false
Answers
Answer:
true
Explanation:
The periodic table includes all of the known elements in the world. How are elements
arranged on the periodic table?
a. by the element's name
b. by their atomic mass
c. by the number of neutrons found in the element
d. by their atomic number
Answers
Answer: D: by their atomic number
Explanation:
Elements are arranged from left to right and top to bottom in order of increasing atomic number. Order generally coincides with increasing atomic mass. The rows are called periods
Theme parks can snap a crystal clear picture of you on a roller coaster at 70 mph, but bank cameras can't get a clear shot of a robber standing still.
bruh.
Answers
Answer:
I know right
Explanation:
Hiiiiiiiiiiiiiiiiiii
How many grams are there in 2.34x10^23 atoms of Cu?
Answers
Explanation
Because it’s 1
The mass of the 2.34 × 10²³ atoms of copper is equal to 24.68 grams.
What is Avogadro's number?The Avogadro constant can be defined as the proportionality factor that the number of constituent particles in a sample with the amount of substance.
Avogadro’s number can be described as a dimensionless number that represents the number of entities in one mole of any substance. These elementary entities can be molecules, atoms, ions, electrons, or protons, etc.
Avogadro’s constant has a value approximately equal to 6.022 × 10²³ mol⁻¹.
Given, the number of atoms of copper = 2.34 × 10²³
The atomic mass of Cu Copper = 63.5 g/mol
So 6.022 × 10²³ atoms of Cu have mass = 63.5 g
Then 2.34 × 10²³ Cu atoms will have mass = [tex]\frac{63.5 \times 2.34 \times 10^{23}}{6.02 \times 10^{23}}[/tex] = 24.68 g
Therefore, 24.68 grams of Cu are there in 2.34 × 10²³ atoms of Cu.
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What is a probable reason that a trait skips a generation?
Answers
Answer:
A!
Explanation:
If one jellybean weighs 0.350g how many jelly beans are in 504g of jellybeans?
Answers
Answer:
1440g
Explanation:
Divide 504g by 0.350g
An oxide of arsenic contains 3.26 g of arsenic and 1.04 g of oxygen. What is the empirical formula for this oxide?
Answers
The empirical formula for this oxide : As₂O₃
Further explanation:
Given
mass of Arsenic=3.26 g
mass of Oxygen = 1.04 g
Required
The empirical formula
Analysis
find mole of elementsdetermine the ratio of each elementSolution
mol of Arsenic(MW=74,9216 u) :
[tex]\tt mol=\dfrac{3.26}{74,9216}=0.0435[/tex]
mol of Oxygen(MW=15.999 u) :
[tex]\tt mol=\dfrac{1.04}{15.999}=0.065[/tex].
The ratio for each element (divide by smaller mol⇒Arsenic)
Arsenic : Oxygen :
[tex]\tt \dfrac{0.0435}{0.0435}\div \dfrac{0.065}{0.0435}=1\div 1.5\rightarrow 2\div 3[/tex]
The empirical formula : As₂O₃
Identify the following structure as an atom, molecule, or compound molecule.
Hydrogen
A.atoms
B. molecules
C.compound molecules
Answers
Answer:
A
Explanation:
The answer is A because Hydrogen is an Atom consists of 1 electron only.
Good luck
How many moles of sodium hydroxide, NaOH, are in a 35.65 g sample of NaOH?
Answers
Answer:0.8910 mols of NaOH in a 35.65 g sample of NaOH
Explanation:
What is the "mass number"? What does the mass number tell you?
Answers
true or false, vaporization that occurs at the surface of a liquid is called evaporation
Answers
Answer:
True
Explanation:
Vaporization that happens below the surface is boiling, above the surface is evaporation :)
Answer:
True
Explanation:
it evaporates because of the temperature difference
Condensation point AND freezing point of oxygen in C and F?
Answers
Answer:54.36 K (−218.79 °C; −361.82 °F)
Explanation:
When hydrogen reacts with active metals, it
shares electrons
gains one electron
loses one electron
O loses two electrons
Answers
How is it determined the highest energy level an atom has
A. By the group number
B. By the period number
C. By the atomic number
D. By the mass number
Answers
Answer:
C. Atomic mass
Explanation:
i just did the quiz and got 100 :) i hope I get brainiest answer
Describe the classification of electromagnetic radiation.
Answers
Answer:
The EM spectrum
Explanation:
The EM spectrum is generally divided into seven regions, in order of decreasing wavelength and increasing energy and frequency. The common designations are: radio waves, microwaves, infrared (IR), visible light, ultraviolet (UV), X-rays and gamma rays.
the reason two atoms would form an ionic compound instead of a covalent compound mainly depends on their
Answers
Predict the products when aqueous solutions of sodium carbonate and calcium chloride are combined.
A)
SC(aq). CaCN)
B)
NaCl(aq), CaC)
C)
NaCl(aq), CaCO3(s)
D)
Na2CO3(aq). CaCl2(aq)
Answers
PLEASE HELP HURRY ILL MARK BRAINLEST
Answers
Structurally, plant and animal cells are very similar because they are both eukaryotic cells. They both contain membrane-bound organelles such as the nucleus, mitochondria, endoplasmic reticulum, golgi apparatus, lysosomes, and peroxisomes. ... Plant cells can be larger than animal cells.
How are the functions of the mouth and stomach similar to each other
Answers
Answer:
they both break down food
Explanation:
Balance: Na2SO4 + Cacl2 → CaSO4 + NaCl
10 points.
Answers
Explanation:
1Na2SO4 + Cacl2 → CaSO4 +2NaCl
What is true of both galvanic and electrolytic cells?
A. Reduction happens at the cathode.
B. They are spontaneous. .
C. They are nonspontaneous.
D. Oxidation happens at the cathode.
Answers
Answer:
reduction happens at the cathode
Explanation:
Just took the test.
Reduction happens at the cathode. Hence, option A is correct.
What is an electrolytic cell?An electrolytic cell converts electrical energy into chemical energy or vice versa.
Oxidation-reduction reactions are balanced by two half overall chemical equations into an oxidation equation and a reduction equation.
Hence, reduction happens at the cathode in both galvanic and electrolytic cells.
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Which phrase accurately describes the location of Africa? O mostly in the eastern hemisphere mostly south of the Tropic of Capricorn O borders the Pacific Ocean O lies north of Europe
Answers
Answer:
mostly in the eastern hemisphere mostly south of the Tropic of Capricorn
Explanation:
The statement which best describes the location of Africa is that it is found
mostly in the eastern hemisphere.
Africa is a continent which comprises of countries such as Nigeria, Ghana,
Kenya etc. It is bounded on the north by the tropic of cancer and towards
the south of the tropic of capricorn.
Africa also lies in the eastern hemisphere and is found to the south of the
European continent.
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Answer correctly please !!!!!!!!!!!!!! Will mark Brianliest !!!!!!!!!!!!!!!!!!!!
Answers
Answer:
endothermic or absorb energy
Explanation:
google :)
atoms are so small that approximately _________ of them can fit on the head of a needle?
Answers
Answer:
5 million
Explanation:
what type of weather forecasting can forecast from 3-7 days? I NEED ANSWERS FAST!!!
Answers
Answer:
WPC medium range forecasting
Explanation:
another science question plz answer ASAP b/c its timed
Answers
Answer:
D
Explanation:
Where do elements in the human body tend to be located on the PERIODIC TABLE? (NOT PERCENTAGES PLEASE)
Answers
Answer:
Oxygen, Carbon, Hydrogern, Nitrogen, Sulfur, and Chlorine are all non-metals
Calcium, Potassium, Sodium, and Magnesium are all metals
Explanation:
The human body is made of elements at the most simple level. Oxygen in group 16, carbon in group 14, hydrogen located in group 1, and nitrogen and phosphorus in group 15.
What are the elements of the body?The body is composed of elements and atoms at the most preliminary level of organization. The elements are placed in a periodic table based on the atomic number that is characteristic of their properties. The elements are arranged into 18 families and groups.
oxygen is located in group 16, carbon in group 14hydrogen in group 1nitrogen in group 15calcium in group 2potassium in group 1sulfur in group 16sodium in group 1chlorine in group 17magnesium in group 2Therefore, elements are classified as alkali metals, alkaline metals, nonmetals, noble gases, halogens, and transition metals.
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