Answer: Magnesium turns red litmus blue and sulphur turns blue litmus red.
Explanation:
When a metal reacts with oxygen present in air, it forms basic oxide which simply means when they react with water, they form basic solution.
The chemical equation for the burning of magnesium (metal) in air and reaction with water of the product so formed are as follows:
[tex]2Mg+O_2\rightarrow 2MgO[/tex]
[tex]MgO+H_2O\rightarrow Mg(OH)_2\text{ (base)}[/tex]
When a non- metal reacts with oxygen present in air, it forms acidic oxide which simply means when they react with water, they form acidic solution.
The chemical equation for the burning of sulphur (non-metal) in air and reaction with water of the product so formed are as follows:
[tex]S+O_2\rightarrow SO_2[/tex]
[tex]SO_2+H_2O\rightarrow H_2SO_3\text{ (acid)}[/tex]
There are 2 types of litmus:
Red litmus: They turn the solution blue when dipped in basic solution.Blue litmus: They turn the solution red when dipped in acidic solution.Therefore, here, magnesium forms a basic solution, therefore it will turn red litmus blue whereas sulphur forms an acidic solution, so it will turn blue litmus red.
24897Bk ---> 24797Bk + 10n + _____
Answer:
Explanation:
What is this?
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!
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.
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 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.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:
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
Where are the electrons found in the atom
Answer:
Explanation:
Atoms consist of three basic particles: protons, electrons, and neutrons. The nucleus (center) of the atom contains the protons (positively charged) and the neutrons (no charge). The outermost regions of the atom are called electron shells and contain the electrons (negatively charged).
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 productWhat are these answers I am confused
Answer:
electrical in among us is kinda sus
Explanation:
write down the needed and important water in our life?
Answer:
Because 60 percent of our body weight is made up of water. Our bodies use water in all the cells, organs, and tissues, to help regulate body temperature and maintain other bodily functions.
Explanation:
Our bodies is made out of 60% water and even if the percentage goes down 1% we could faint. 5% and we could die. We wash off with water to clean ourselves. We use water to cook like boiling pasta. Water is a necessity not just humans need it but plants need it to grow and germinate. Hope this helps sorry it took so long. I had a fight with autocorrect.
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 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
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.
What is the point of using a chemical formula?
2. what do u mean by
Decomposition chemical Reaction
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.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
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 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 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:
what is the best example of energy is transferred object to object
electric energy to heat and light energy
Which 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!
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:
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
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]
Which of the following occurs in cells only produce male and female cells
Answer:
I think its B
Explanation:
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 sealed container of liquid develops some vapor pressure. Which of the following would reduce the vapor pressure?
increase the temperature
add more liquid to the container
decrease the temperature
Answer:
Decrease the temperature
Explanation:
If you increase the temperature the vapor pressure will increase. Adding more liquid to the container is completely irrelevant.
Decreasing the temperature would reduce the vapor pressure of a sealed container of liquid. Therefore, option (C) is correct.
Vapour pressure is the pressure that the vapour phase puts on the liquid phase when the two phases are in balance. At higher temperatures, the molecules of the liquid have more energy and are more likely to move into the vapour phase. This makes the vapour pressure go up.
But when the temperature goes down, the average energy of the molecules in the liquid goes down, which slows the rate of evaporation. This means that fewer molecules are moving from the liquid phase to the vapour phase. As a result, the vapour pressure is lower.
Putting more liquid in the bottle wouldn't change the vapour pressure directly. The temperature and the type of liquid, not the amount, are what decide the vapor pressure.
Learn more about Vapor Pressure, here:
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Y'all wanna help me with chemistry? The chart and bottom question for brainliest!
Answer:
As: Negative
Rb: Positive
Te: Positive
Al: Positive