Answer:
Explanation:
47 i took the test
Silver (Ag) has 47 protons, 60 neutrons, and 47 electrons in each atom. Based on this information, the mass number of the silver would be 107.
What is the atomic number?The total number of protons present in an atom is known as the atomic number of that atom. The atomic number has no correlation either with the number of neutrons or the number of electrons present inside an atom.
As given in the problem Silver (Ag) has 47 protons, 60 neutrons, and 47 electrons in each atom.
The atomic number of the silver = number of protons
= 47
The mass number of the silver = number of protons + number of neutrons
=47 + 60
=107
Thus, based on the given information the mass number of the silver would be 107.
To learn more about the atomic number from here, refer to the link;
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Which type of bond will form between these elements? *
WHICH BONO
Covalent
Metallic
lonic
Please I need the answer I had a stomach virus and didn’t get to study for my test
Answer:
Please mention elements so i can answer it
Explanation:
Which process results in the formation of sedimentary rocks?
A. Rock fragments are layered and pressurized over time.
B. Rocks are sorted under a glacier as the glacier retreats.
C. Rocks are heated and changed by volcanic forces quickly.
D. Rocks that contain two or more minerals melted together.
Answer:
A. Rock fragments are layered and pressurized over time.
Explanation:
Sedimentary rocks are derived from pre-existing rocks that have been subjected to agents of denudation, weathered, transported and deposited within a basin.
In the basin, the sediments are accumulated in their final resting position.
Sediments are accumulated as layers on top of one another. The pressure of the sediment on top of another forces out water and presses the layers into sheets. Over time, the compression leads to lithification of the rock. During lithification, compaction and cementation occurs.Identify the chemical reaction Below:
KOH + AlCl3 + AlCl3+ KCI
Answer:
Double displacement reaction
Explanation:
Given expression:
KOH + AlCl₃ → Al(OH)₃ + KCl
The reaction shown above is a double displacement reaction or double decomposition or double replacement reaction. This type of reaction involves an actual exchange of partners to form new compounds.
For example:
AB + CD → AD + CB
Such reactions are driving by one of the following factors:
formation of an insoluble compoundformation of water or any other non-ionizing compoundliberation of a gaseous productWhich of the following is an element?
A.
zinc metal (Zn)
B.
magnesium chloride salt (MgCl)
C.
hydrochloric acid (HCl)
D.
carbon monoxide gas (CO)
Answer:
A. zinc metal
Explanation:
Zinc is a chemical element with the symbol Zn and atomic number 30. Zinc is a slightly brittle metal at room temperature and has a blue-silvery appearance when oxidation is removed. It is the first element in group 12 of the periodic table.
Answer:
A.) Zinc (Zn) is a metal
Explanation:
Hope this helps!
Draw the Lewis structure for CO3 2- including any valid resonance structures. Explain the reason for more than one valid structure. Please draw me a picture if you can!
Which is the correct order largest to smallest
Answer:
how am i suppose to put it in largest to smallest if u didnt give any numbers
Y'all wanna help me with chemistry? The chart and bottom question for brainliest!
Answer:
As: Negative
Rb: Positive
Te: Positive
Al: Positive
2. What are the ions present in the compound CsF? *
(1 Point)
O Cs- and F-
Cs- and F+
Cs+ and F-
Cs and F only
Answer:
Cs+ and F-
Explanation:
The compound CsF is made up of two elements; Caesium (Cs) and F (Flourine)
Caesium is a metal and would therefore lose electrons - a cation is formed. When Caesium loses a single electron, the ion symbol is given as; Cs+
Flourine is a non metal and would therefore gain electrons - an anion is formed. When Flourine gains a single electron, the ion symbol is given as; F-
Hence the correct option is;
Cs+ and F-
2. Which of the following does not have a nucleus? a. prokaryotes b. eukaryotes c. prokaryotes and eukaryotes
Answer:
Erythrocytes
Erythrocytes do not contain a nucleus. This would make answer choice "A" correct. Erythrocytes are red blood cells and these cells differ from the other cells of the body because of the absence of the nucleus. All the other cells noted have nuclei.
Explanation:
Have A Wonderful Day !!
Answer:a. Prokaryotes
Explanation:
Which of the following is not a reason to volunteer?
A
to make money
B
to feel good about yourself
C
to have a sense of accomplishment
D
to gain experience
Answer:
A. To make money
Explanation:
Answer:
hi
Explanation:
A. to make money
have a nice day
bye
2. what do u mean by
Decomposition chemical Reaction
the atom has a positively charged center called the ____ and negatively charged particles called ____ revolving around the center
Answer: Positive- Protons
Negative- Electrons
Explanation:
A chemical equation is balanced when the number of each
type of
__ is the same on both sides of the equation.
Answer: Atom/element
Explanation: Since matter cannot be created or destroyed, the number of atoms has to be equal on both sides of the equation.
I BET NO ONE KNOWS THIS 10. Which of the following words is closest to the same meaning as hypothesis?
fact
law
formula
suggestion
conclusion
Answer:
conclusion.
Explanation:
3. How are ice and plant roots weathering agents?
Answer:
Explanation:
When rocks, land formations and minerals begin to break down and dissolve, it's called weathering. After crumbling, the process of erosion transports these broken bits away by wind or rain. Agents responsible for weathering include ice, salts, water, wind and plants and animals.
which of the following gases can be dried using concentrated sulfuric acid? Ammonia, Chlorine, Hydrogen Chloride.
Answer:
Both chlorine [tex]{\rm Cl_2}\, (g)[/tex] and hydrogen chloride [tex]{\rm HCl}\, (g)[/tex].
Concentrated sulfuric acid should not be used to dry ammonia because ammonia itself would react with sulfuric acid.
Explanation:
Keep in mind that concentrated sulfuric acid is:
Acidic, andCapable of oxidizing many substances.Because of its acidity, concentrated sulfuric acid will readily react with gases that form basic solutions when mixed with water. Therefore, concentrated sulfuric acid should not be used to dry those gases. Neither should concentrated sulfuric acid be used to dry gases that might lose electrons to concentrated sulfuric acid. Otherwise, a significant portion of those gas would be consumed in those unexpected chemical reactions.
AmmoniaAmmonia is one such gas. Because the solubility of ammonia in water is remarkably high, the humid ammonia gas in this question would likely exist in the form [tex]\rm NH_4OH[/tex]. When that gas comes into contact with sulfuric acid [tex]\rm H_2SO_4[/tex], the following reaction could take place:
[tex]\rm 2\, NH_4OH + H_2SO_4 \to (NH_4)_2 SO_4 + 2\, H_2O[/tex].
As long as concentrated sulfuric acid isn't used up, very little ammonia would exit from the other side of the drying apparatus. Hence, concentrated sulfuric acid shouldn't be used to dry ammonia.
Chlorine and HClConcentrated sulfuric acid does not react with chlorine or HCl under typical lab conditions. Therefore, it should be possible to dry chlorine [tex]{\rm Cl_2}\, (g)[/tex] and [tex]{\rm HCl}\, (g)[/tex] with concentrated sulfuric acid in a lab.
A balloon is inflated with helium to a volume of 45L at room temperature (298K). If the balloon is cooled to 200.K, what is the new volume of the balloon?
Answer:
V₂ = 30.20 L
Explanation:
Given data:
Initial volume = 45 L
Initial temperature = 298 K
Final temperature = 200 K
Final volume = ?
Solution;
The given problem will be solve through the Charles Law.
According to this law, The volume of given amount of a gas is directly proportional to its temperature at constant number of moles and pressure.
Mathematical expression:
V₁/T₁ = V₂/T₂
V₁ = Initial volume
T₁ = Initial temperature
V₂ = Final volume
T₂ = Final temperature
Now we will put the values in formula.
V₁/T₁ = V₂/T₂
V₂ = V₁T₂/T₁
V₂ = 45 L × 200 K / 298 k
V₂ = 9000 L.K / 298 K
V₂ = 30.20 L
Which set of elements will have similar reactivity?
Answer:
B and C
Explanation:
Answer:
C
Explanation:
K,Na, Li all elements found in group 1
What would likely to happen if
the wind hit the mountain? Will it
change direction?
Answer:
yes it willl change and like this moonson happens.
Answer:
hanyuk gaasss kannnn belajarrr
Which of the following is the best description of an element?
a
A material that has a specific shape at a specific temperature
b
A pair of atoms that have different abilities when joined together
c
A substance that cannot be broken down into simpler substances
d
A naturally occurring mineral made of more than one substance
Answer:
c . A substance that cannot be broken down into simpler substances
Explanation:
The best description of an element is that it is a substance that cannot be broken down into simpler substances.
An element is a pure substance but it is the simplest unit by which chemical reactions can take place.
Elements are made up of identical atoms within their structure. When compounds form, elements are simply rearranging and combining with one another to give a certain product. There over 100 elements on the periodic table. But millions of compounds exists in nature because elements can combine in diverse ways.What is the weight of 12 moles of water
220 g H₂O
General Formulas and Concepts:Math
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightChemistry
Atomic Structure
Reading a Periodic TableStoichiometry
Using Dimensional AnalysisExplanation:Step 1: Define
12 moles H₂O (water)
Step 2: Identify Conversions
Molar Mass of H - 1.01 g/mol
Molar Mass of O - 16.00 g/mol
Molar Mass of H₂O - 2(1.01) + 16.00 = 18.02 g/mol
Step 3: Convert
Set up: [tex]\displaystyle 12 \ moles \ H_2O(\frac{18.02 \ g \ H_2O}{1 \ mol \ H_2O})[/tex]Multiply: [tex]\displaystyle 216.24 \ g \ H_2O[/tex]Step 4: Check
Follow sig fig rules and round. We are given 2 sig figs.
216.24 g H₂O ≈ 220 g H₂O
What is hydrogen peroxide ?
chemical that appears as a colorless liquid, is used in a wide range of cleaning and personal care products, including hair dyes and bleaches, toothpaste and mouthwashes, bathroom cleaners and laundry stain removers. Hydrogen peroxide can also be found in over-the-counter first aid antiseptics, and it is used as a bleaching agent in some food products. It has other consumer and industrial uses as well, including water treatment.
Share:
find the mass of a sample of methane (CH₄) if it contains 5.6x10²⁴ molecules of methane.
chapter: mole
Answer:
what do you mean by magnetic and sound energy
Which of the following occurs in cells only produce male and female cells
Answer:
I think its B
Explanation:
24897Bk ---> 24797Bk + 10n + _____
Answer:
Explanation:
What is this?
Possible answers: conduction, convection, radiation Heat is carried away from the pot in all different directions. This shows: Warm water rises within the pot. This shows: Heat moves from the flame to the pot's bottom. This shows:
Answer:
Heat is carried away from the pot in all different directions. This shows: RADIATIONWarm water rises within the pot. This shows: CONVECTIONHeat moves from the flame to the pot's bottom. This shows: CONDUCTIONExplanation:
Conduction involves transfer of heat energy through a solid medium; convection involves heat transfer of fluid particles in their masses, while thermal radiation is transfer via electromagnetic waves in a vacuum.
I hope this was helpful.
Lets study what conduction, convection and radiation are:
Conduction explains the process in which the transfer of heat takes place between objects by direct contact. Convection refers to the form of heat transfer in which energy transition occurs within the fluid. It helps the heat to pass through fluids. Radiation helps the heat to flow through empty spaces.Learn more:
brainly.com/question/9382711
What is the point of using a chemical formula?
What are these answers I am confused
Answer:
electrical in among us is kinda sus
Explanation:
Each of the thermometers shows a different
temperature scale. The thermometer on top
measures temperature in Celsius degrees. The
thermometer on the bottom measures temperature in Fahrenheit degrees. The
thermometers are placed so that the freezing point of water is even on each scale as a reference. The freezing point of water is 32 degrees F. If the boiling point of water is 212 degrees F, what is the boiling point of water in
degrees C (Celsius)?
Answer:
100 degrees Celsius
Explanation:
If you look at the to number lines you want to find 212 degrees Fahrenheit on the bottom line then look at the top number line where the 212 lines up which is 100 degrees Celsius.
If 18.7 grams of an aqueous solution of ammonium fluoride, NH4F, contains 1.26 grams of ammonium fluoride, what is the
percentage by mass of ammonium fluoride in the solution?
The percentage by mass of ammonium fluoride in the solution : 6.738%
Further explanationGiven
18.7 g of NH4F solution
1.26 g NH4F
Required
The percentage by mass
Solution
[tex]\tt \%mass=\dfrac{mass~solute}{mass~solution}\times 100\%[/tex]
mass solute = mass Ammonium fluoride
mass solute = 1.26 g
mass solution = 18.7 g
Input the value :
[tex]\tt \%mass=\dfrac{1.26}{18.7}\times 100\%\\\\\%mass=6.738[/tex]