Answer:
Sodium bicarbonate.
Explanation:
The gas produced during the mixing of bath bombs in water is Sodium bicarbonate. If the reaction is with citric acid then Sodium citrate can be produced. They are weak acid with bicarbonate base. These bath bombs can be a mixture of wet and dry substances and any shape can be mold.
correct name for ZnS
Zinc sulfide (or zinc sulphide) is an inorganic compound with the chemical formula of ZnS. This is the main form of zinc found in nature, where it mainly occurs as the mineral sphalerite.
Find the moles of 127.5g of NaCl.
Answer:
n = 2.18 moles
Explanation:
Given that,
Mass = 127.5g
Molar mass of NaCl = 58.44 g/mol
We need to find the number of moles. We know that,
No. of moles = Given mass/molar mass
Put all the values,
[tex]n=\dfrac{127.5\ g}{58.44\ g/mol}\\\\n=2.18\ moles[/tex]
Hence, there are 2.18 moles of 127.5g of NaCl.
In a bakery shop, a chef bakes a cake in an electric oven. The energy outputted from the oven becomes an input to the cake system.
Which energy form is readily outputted from the oven system?
A. chemical energy
B. electrical energy
C. sound energy
D. thermal energy
Global climate change is a result of human activity?
Answer:
Yes
Explanation:
Due to pollution, greenhouse gasses, etc
Humans are increasingly influencing the climate and the earth's temperature by burning fossil fuels, cutting down forests and farming livestock. This adds enormous amounts of greenhouse gases to those naturally occurring in the atmosphere, increasing the greenhouse effect and global warming.
what is the ingredient formula for petroleum
Answer:
(C15H15N)
Explanation:
A gas occupies a volume of 2.50 L at a pressure of 350.0 kPa. If the temperature remains
constant, what volume would the gas occupy at 1750 kPa ?
1. 12.5 L
2. 5.00 L
3. 1.40e+2L
4. 0.500 L
Answer:
V₂ = 0.5 L
Explanation:
Given that,
Initial volume, V₁ = 2.5 L
Pressure, P₁ = 350 kPa
New pressure, P₂ = 1750 kPa
We need to find the new volume if the temperature remains constant. The mathematical relation between P and V is :
[tex]P\propto \dfrac{1}{V}\\\\or\\\\\dfrac{P_1}{P_2}=\dfrac{V_2}{V_1}[/tex]
Where
V₂ is new volume
So,
[tex]V_2=\dfrac{P_1V_1}{P_2}\\\\V_2=\dfrac{350\times 2.5}{1750}\\\\V_2=0.5\ L[/tex]
So, the new volume is equal to 0.5 L.
container has 3 moles of gas with a volume of 60 liters and at a temperature of 250 K, Calculate the pressure inside the container in kPa
Answer:
103.98 kpa
Explanation:
Pv= nRT
Where
P= pressure of the system=
n= number of moles= 3 moles
T= temperature= 250 K
Volume of the container= 60 liters
R= 0.0821L.atm/K.mol
Substitute the values
Pv= nRT
P= nRT/ V
= (3×0.0821×250)/60
= 1.026 Atm
1atm= 101325 Pascal
1.026 atm= X
= 103984 pasca
Convert to kilopascal
= 103984 pasca /1000
= 103.98 kpascal
How to avoid the process of corrosion?
No Links please.
I needASAP!
Answer:
5 Different Types of Corrosion Prevention Methods
Barrier Coatings. One of the easiest and cheapest ways to prevent corrosion is to use barrier coatings like paint, plastic, or powder. ...
Hot-Dip Galvanization. ...
Alloyed Steel (Stainless) ...
Cathodic Protection. ...
EonCoat.
PLEASE HELP MEEEEEEEEEEEEE
Answer:
Explanation:
THE BEST ANSWER IS CCC
What is the approximate vapor pressure when the gas condenses at 70°C?
150
5
760
380
Answer:
380
Explanation:
I couldn't find the answer anywhere so this is the correct answer. I got it graded.
More energy can be absorbed by a larger sample of a substance due to its higher mass.
True
or
False
?
Answer:
true
Explanation:
How many moles of hypomanganous acid, H3MnO4, are contained in 22.912 g?
Answer:
0.188mol
Explanation:
Using the formula as follows:
mole = mass/molar mass
Molar mass of hypomanganous acid, H3MnO4 = 1(3) + 55 + 16(4)
= 3 + 55 + 64
= 122g/mol
Mass of H3MnO4 is given as 22.912 g
Hence;
moles = 22.912 ÷ 122
number of moles = 0.188mol
Add more drink mix until you notice a color change. Have you increased or decreased the concentration? (Higher number means a higher concentration).
Answer:
Increased the concentration
Explanation:
Complete Question
Open the simulation by pushing the play button. Begin by dragging the concentration tester overto the liquid and add drink mix until the concentration reaches approximately 2.oo mol/L. This means there are 2.00 moles of the drink mix in 1 Liter of the solution. Add more drink mix until you notice a color change. Have you increased or decreased the concentration? (Higher number means a higher concentration).
Solution
Drink mix is basically the solute which is added to solvent i.e water.
The higher is the amount of drink mix in the solvent, the higher is the concentration of the solute and hence darker is the color of the drink.
Hence, in the case the concentration of the drink has been increased.
Select the ion. HCl H 3O +1 H 2O
Answer:
[tex]H _{3}O {}^{ + } [/tex]
Hydroxonium ion
URGENT!!
which has the largest London dispersion force out of the ones listed
What two metals are have atoms larger than that of sodium
Answer: potassium and rubidium
Explanation:
1) The group 1 of the periodic table contain six elements namely Lithium(Li), Sodium(Na),Potassium(K),Rubidium(Rb),Cesium(Cs) and Francium(Fr). These metals are called alkali metals because they form alkalies( i.e. strong bases capable of neutralizing acids) when they react with water.
2) The heavier alkali metals (K, Rb, and Cs) react so vigorously that they invariably explode.
3) This trend, which is not consistent with the relative magnitudes of the reduction potentials of the elements, serves as another example of the complex interplay of different forces and phenomena—in this case, kinetics and thermodynamics.
If your end product is 1.5 moles of KMnO4, how many moles of manganese oxide were used in the reaction?
The equation for the production of potassium permanganate is as follows:
2 MnO2 + 4 KOH + O2 → 2 KMnO4 + 2 KOH + H2
You must show all work
Answer:
1.5 moles of KMnO4 will be produced from 1.5 moles of MnO2
Explanation:
The balanced equation of this chemical reaction is
2 MnO2 + 4 KOH + O2 → 2 KMnO4 + 2 KOH + H2
2 moles of MnO2 produces 2 moles of KMnO4
That means 1 moles of KMnO4 will be produced from 1 moles of MnO2
Hence, 1.5 moles of KMnO4 will be produced from 1.5 moles of MnO2
The moles of manganese oxide were used in the reaction is 1.5 moles.
What is stoichiometry?Stoichiometry of any reaction tells about the relative amount of species present before and after the chemical reaction.
Given chemical reaction is:
2MnO₂ + 4KOH + O₂ → 2KMnO₄ + 2KOH + H₂
From the stoichiometry of the reaction, it is clear that same moles of manganese oxide and potassium permanganate is involved in the reaction.
2 moles of KMnO₄ = produce by 2 moles of MnO₂
1.5 moles of KMnO₄ = produce by 2/2×1.5=1.5 moles of MnO₂
Hence, required moles are 1.5 moles.
To know more about moles, visit the below link:
https://brainly.com/question/24631381
Why is it important for scientists to use the scientific method?
Answer:
The scientific method attempts to minimize the influence of bias or prejudice in the experimenter. Even the best-intentioned scientists can't escape bias. ... That's the job of the scientific method. It provides an objective, standardized approach to conducting experiments and, in doing so, improves their results.
Answer:
to get used to them
Explanation:
you have to practice them so that they can get into your head
Porque una solución acuosa 30g de sal en 80g de agua Que % de masa de sal contiene
Given :
An aqueous solution of 30g of salt in 80g of water.
To Find :
The % mass of the salt.
Solution :
Mass percentage of the salt is given by :
[tex]Mass \ \% = \dfrac{Mass \ of \ salt}{Mass \ of \ salt + Mass \ of \ water}\\\\Mass \ \% = \dfrac{30}{30 + 80 }\times 100 \%\\\\Mass \ \% = 27.27\ \%[/tex]
Hence, this is the required solution.
Why is creativity important in scientific investigations?
a. Creative solutions are often needed to solve technical problems.
b. Scientists need to creatively adjust their data to prove their hypothesis.
c. There is no way to test a hypothesis, so creativity is necessary.
d. Most scientific experiments have no data.
Answer:
a. Creative solutions are often needed to solve technical problems.
Explanation:
Science in itself is a voyage of discovery. Scientific investigators focusing on various issues are often working hard to find creative solutions to complex technical problems.
In order to find solutions to all these problems bedeviling humanity, scientific investigators must be quite creative. Creativity is always at the bedrock of finding solutions to the complex technical problems of the world which happens to be the ultimate goal of science.
Hence, creativity is indispensable in scientific investigation and creative solutions are often needed to solve technical problems.
Answer:
a. Creative solutions are often needed to solve technical problems
Explanation:
Scientific investigation is the process using the scientific method which consists of empirical techniques in obtaining answers to question raised and used for driving the investigation
The scientist carrying out the investigation into the new area, is therefore required to be creative in adapting the available resources in answering the questions based on the scientific method
A sample of hydrogen gas collected by displacement of water occupied 30mL at 24 C on a day when the barometric pressure was 736t orr. What volume would the hydrogen occupy if it were dry and at STP? The vapor pressure of water at 24 C is 22.4 torr
Answer:
[tex]v_2=6,48*10^{-4}L[/tex]
Explanation:
From the question we are told that:
Volume of hydrogen [tex]V_1=30mL=>30*10^{-3}[/tex]
Temperature [tex]T_1=24C=>24+273=>297k[/tex]
Pressure of water [tex]P_1=22.4torr=>\frac{22.4}{760}=0.0295atm[/tex]
Let
STP(Standard Temperature and pressure)
[tex]T_2=273K[/tex]
[tex]P_2=1atm[/tex]
Generally the equation for ideal gas is mathematically given by
[tex]\frac{p_1V_1}{T_1}=\frac{P_2V_2}{T_2}[/tex]
Therefore
[tex]v_2=\frac{P_1v_1T_2}{T_1P_2}[/tex]
[tex]v_2=\frac{0.0295*30*10^{-3}*273}{297*1}[/tex]
[tex]v_2=6.48*10^{-4}L[/tex] (at STP(Standard Temperature and pressure))
a. Use VSEPR to predict bond angles at the marked atom. The angle is : _______ degrees. The expected hybridization at the marked atom is _____ . b. Use VSEPR to predict bond angles at the marked atom. The angle is : _______ degrees. The expected hybridization at the marked atom is _____ .
Answer: Hello your question is incomplete attached below is the complete question with the missing diagrams
a) The angle = 120°
hybridization = sp2
b) The angle = 120°
hybridization = sp2
Explanation:
a) using VSPER to predict bond angles
Given that there is the presence of 1 double bond to C and 2 single bonds one to C and one to H around the marked atom which equals 3 sets of electrons surrounding the central atom.
hence according to VSPER theory the angle = 120° while the Hybridization = sp2
b) Using VSPER to predict bond angles at marked atom
Given that there is There is 1 double bond to C and 2 single bonds to the different C atoms respectively around the marked atom, which makes 3 sets of electorns surrounding the central atom
hence according to VSPER theory the angle = 120° while the Hybridization = sp2
What is the molarity of a solution made from dissolving 3.0 moles of KCl in 500 mL of solution?
A. 750 M KCl solution
B. 3.0 M KCl solution
C. 0.06M KCl solution
D. 6M KCl solution
Answer:
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what the total charge of an atom with 8 protons 10 neutrons and 10 electrons?
Answer:
since an oxygen atom normally has 8 protons and 8 electrons, this ion has 10 electrons (-10 charge) and 8 protons (+8 charge) giving it a charge of -2 (-10 + 8 = -2).
Explanation:
Help needed ASAP, I will mark your answer as brainliest.
Answer:
b
Explanation:
b
(05.06 MC)
During an experiment, the percent yield of calcium chloride from a reaction was 85.22%. Theoretically, the
expected amount should have
grams What was the actual yield from this reaction? (5 points)
CaCO3 + HCI - CaCl2 + CO2 + H20
been 113
96.3 grams
О 99.0 grams
113 grams
0 121 grams
Answer:
96.3g is the actual yield from this reaction
Explanation:
Have been 113g...
The percent yield of a reaction is defined as one hundred times the ratio between actual yield (Our incognite) and the theoretical yielf (113g). The equation is:
Percent yield = 85.22% = Actual Yield / 113g * 100
0.8522 = Actual Yield / 113g
0.8522*113g =
96.3g is the actual yield from this reaction
Answer:
96.3
Explanation:
Just took the test
what is ionic compounds??
Answer:
The ionic compounds are chemical compounds composed of ions, which is held together by electrostatic forces termed ionic bonding.
1 Mg (s) + 2 HCl (aq) --> 1 MgCl2 + 1 H2 If 2.50 mol of hydrochloric acid is reacted, how many moles of magnesium chloride is produced?
Answer:
1.25 moles of magnesium chloride are produced
Explanation:
Based on the reaction:
Mg(s) + 2HCl (aq) → MgCl₂(s) + H₂(g)
1 mole of magnesium, Mg, reacts with 2 moles of hydrochloric acid, HCl, to produce 1 mole of magnesium chloride, MgCl₂ and 1 mole of hydrogen gas.
To solve this question we have to tak, from the chemical equation:
2 mol HCl = 1mol MgCl₂
That means, the moles of MgCl₂ produced from 2.50mol HCl are:
2.50 mol HCl * (1mol MgCl₂ / 2mol HCl) =
1.25 moles of magnesium chloride are producedbalance NaHCO3(S) -NaOH(S)+CO(G)
Answer:
NaHCO3(s) → NaOH(s) + CO2(g)
Explanation:
A balanced chemical equation is that in which the number of atoms of each element on the reactant side is equal to the number of atoms of each element on the product side.
Based on the following equation below, each atom on the reactant side matches the ones on the product side, hence, the equation is said to be balanced. The balanced equation is as follows:
NaHCO3(s) → NaOH(s) + CO2(g)
PLEASE HELP!!!
Two buildings are 21m apart. The height of the taller building is 207m. The angle of depression from the top of the taller building to the top of the shorter building is 15°. Find the height of the shorter building to the nearest meter. (please try to include diagram)
Answer:
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Explanation: