The theoretical yield of BaCO3 is 5.5
What is theoretical yield?The theoretical yield is the yield calculated from the stoichiometry of the reaction. The equation of the reaction is;
Ba(NO3)2(aq) + Na2CO3 (aq) ------> BaCO3(s) + 2NaNO3(aq)
Number of moles of limiting reactant: 0.4 M × 70/1000 = 0.028 moles
Since the reaction is 1:1,om;y 1 mole of BaCO3 is formed. Hence, mass of BaCO3 = 0.028 moles × 197 g/mol = 5.5g
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A sample of propane, C3H8 , contains 13.8 moles of carbon atoms. How many total moles of atoms does the sample contain
A graduated cylinder contains 15.0 mL of water. When a metal solid is added to the cylinder the water level rises to 35.5 mL. The metal solid is massed on a balance and its mass is found to be 154.32 g. What is the density of the metal?
How can atoms exist in an electrically neutral state
Answer:
When an atom has an equal number of electrons and protons, it has an equal number of negative electric charges (the electrons) and positive electric charges (the protons). The total electric charge of the atom is therefore zero and the atom is said to be neutral.
Explanation:
what do scientist study to reconstruct past climate conditions?
The movement of solid particles can be described as ________.
Answer:
liquid vibrate, move about, and slide past each other. solid vibrate (jiggle) but generally do not move from place to place.
Explanation:
9.69 × 10^7 in decimal form
Find the "natural" equilibrium concentration of NO in air in units of molecules/cm3 .
Answer:
6400 molecules / cm^3
Explanation:
10.6*10^-16 mol/L * 6.022*10^23 molecules/mol * 1 L / 1000 cm^3 * 1 / 100 L = 6400 molecules / cm^3
The "natural" equilibrium concentration of Nitric oxide in air in units of molecules/cm .0.062molecules/cm3
chemical equilibrium or equilibrium concentration is a state when the rate of forward reaction in a chemical reaction becomes equal to the rate of backward reaction. At the same time, there is no change in the products and reactants, and it seems that the reaction has stopped.
How do you find the equilibrium concentration?The equation for Beer's law is a straight line with the general form of y = mx +b. where the slope, m, is equal to εl. In this case, use the absorbance found for your unknown, along with the slope of your best fit line, to determine c, the concentration of the unknown solution.
Does equilibrium mean same concentration?Reversible reactions occur until equilibrium is established, meaning that they achieve a sort of balance between amounts of reactant and product. If the reactants and products are equal in energy, at equilibrium, they will have the same concentration.
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How many moles of nitrogen gas would be produced if 3.40 moles of copper(II) oxide were reacted with excess ammonia in the following chemical reaction? 2 NH₃(g) + 3 CuO (s) → 3 Cu(s) + N₂(g) + 3 H₂O(g)
Explanation
Step 1: balance the equation
Step 2: Place the given mass (mole) above the correspond formula and X above the formula sub whose m B to be determined
Step3: Write the total molar mass of the the substance beliw the formula of each substance.
3.40 X
2NH3 + 3CuO -> 3CuO +N2 +3H2O
3 mol 1 mol
3.40 = X
3mol 1mol
X(3)=3.40 *1mol
3 mol
X= 3.40 *1 mol
3 mol
X=1.3333
This is because i am asked only the mole but if it asks what mass(what gram) we will find the mass
what are the latest e-waste treatment techniques and what are the new innovative methods to recover gold from electrical wastes? Please be thorough
Answer:
Gold is present in electronic wastes like smart phones,TV sets and computers etc.It is necessary to recover gold effectively.Recovering precious metal from electronic waste could help to reduce the environmental impact and cut carbon dioxide emissions
Simply one who think about the target metal without disturbing the other major impurities will be the idea solution for the industrial scale gold recovery from E-waste... In our lab we have developed the process which was patented in India... hope soon it will publish into the public domain.... PROCESS FOR THE RECOVERY OF GOLD FROM MANUALLY DISMANTLED GOLD COATED E-WASTE
Use of both physical and biological processes may help in a better recovery of Gold. Several microorganisms have been discovered which are efficient in solubilising gold from the e-wastes.
Explanation:
hope it helps
List the steps that occur in a generator that transform the mechanical energy of the turbine
into electricity. Be sure to include the role that magnetic and electric fields play in the process.
Electric charges flow through connection wires to constitutes electric current which supplie the generator.
What is generatorAn electric generator are used to generate electricity, they converts mechanical energy to form electricity.
Electric charges are available in the wire will winds through an external electric circuit to generate electricity.
Electric charges flow through this wires to constitutes electric current which supplies the generator.
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1. Which is a substance that cannot be broken down into another substance?
O compound
O atom
O element
O
molecule
Answer:
Atom
Explanation:
my theory:
Atoms are their own substance. It's atom because if you tried to break an atom, you would be going into nuclear physics. That would be unsafe and dangerous.
Answer:
Explanation:
1. Compound
What are the biggest challenges when it comes to recycling Polyolefins for Mechanical Recycling.
Answer:
The use of post-consumer polyolefins is increasing due to the pledges of multiple organizations to use higher concentrations of recycled materials in packaging. However, direct food contact applications are challenging with various regulations around the world mandating minimum safety requirements, which is often determined by the condition of use (microwave, cold storage) and food type (fatty, aqueous, dry). This article reviews different predictive models that have been developed to study contaminant migration from packaging to food contact articles. It also examines multiple techniques and methods that have been employed to quantify and assess to the safety of recycled materials (e.g., United States and Europe) which serve as a base for the regulatory framework for many other countries. The presence of different contaminants during polymer processing is also discussed due to potential problems from the presence of harmful compounds affecting human health or degradation of material properties.
1 A pump with an 80% efficiency drives water up between two reservoirs through a piping system of total length L = 15 and circular cross -section diameter d = 7 cm. The reservoirs are open to the atmosphere at an ambient temperature of 20 C. The difference in elevation between the free surface can be accounted for by the local loss coefficients Kentrance Kexit 1.0, Kelbow 0.4. If the volumetric flow rate in the system Q = 10 Liter/s, and the surface roughness of the pipe is = 0.15 mm, calculate:
(a) The average water flow velocity in the pipe.
How many liters of H2O gas are produced when
7.25 liters of C3H8 are
burned at STP?
C3H8 + 5O2 → 3CO2 + 4H2O
(pls show work)
yup thas ittkew efjejkejg ghioen
...alcohol has been produced by fermentation of grains and fruits, and
consumed for thousands of years in various forms.
A) Ethyl
B) Methyl
C) Propyl
D) All the above
ANSWER: A
Answer:
Ethyl
Explanation:
Ethyl alcohol is a very good in case of storage.It can be stored for over than 1000 years .Historians discovered many bottles of ethyl alcohol stored before 2000YearsWhat type of energy transformation happens when you boil water
Answer:
thermal energy.
Explanation:
Thermal energy is produced when the atoms and molecules in a substance vibrate faster due to a rise in temperature.
Where is the moon located in a eclipse season
Answer:
During the eclipse season, the Moon is at a low ecliptic latitude (less than around 1.5° north or south), hence the Sun, Moon, and Earth become aligned straight enough (in syzygy) for an eclipse to occur.
Explanation:
Name the substances
50 pointssss! Please help me
Answer:
may I know the directions?
Explanation:
pls put a deroction
a. 2-methyl-2-propanol
b. 2-butene 1-ol
c. 3-methyl 2-butanol
d. 3-methyl 2-pentanol
at what point does the radiation start to affect satellites in the atmosphere
can guys help me to answer it
Calculate Density:
Volume=13cm3, Mass=147.55g
Someone please help
Answer:
11.35 g/cm³
Explanation:
If your rounding then 11.4. hope this helps :)
How was this organism transported to a new ecosystem in the u.s.
Answer:
ExplaIf the organism was transported to a new ecosystem in the USA, this species will be an invasive species, which will reproduce more, and will not have a specific predator, which may bring an imbalance to the ecosystem.
What are Invasive Species?
Invasive Exotic Species or, simply, Invasive Species is defined as an exotic species that proliferates without control and starts to pose a threat to native species and to the balance of ecosystems that it occupies and transforms in its favor. It can even pose a risk to people.
With this information, we can conclude that caution is needed when introducing a new species into a new ecosystem.
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We use yeast, seen below, when we make bread. Some warm water and a little sugar and yeast are ready to divide through budding. Each yeast cell is identical to its parent cell. This is similar to regeneration in protists. This is a form of __________ reproduction.
Question 13 options:
abiotic
aexual
genetic
seual
In pea plants, the gene for the color of the seed has two alleles. In the following Punnett square shown below, the dominant allele (Y) represents yellow and the recessive allele (y) represents green.
Punnett Square showing a grid that is blank with 4 empty boxes, two columns and two rows. The female parent plant across the horizontal side, top, of the grid indicates a yellow phenotype and a genotype of Yy. The male parent plant along the vertical side of the grid indicates a yellow phenotype and a genotype of YY.
Based on the Punnett square, what percentage of offspring would be expected to have yellow seeds?
0%
25%
50%
100%
Nvm dont answer
Answer:
100%
Explanation:
since both genotypes are dominant, and one of them is YY, all of the offspring will be yellow.
Which solution between molecular compounds denoted alkane and alkene, can be analyzed using a UV/Vis spectrophotometer? Explain.
Answer:
UV/Vis spectroscopy is routinely used in analytical chemistry for the quantitative determination of different analytes, such as transition metal ions, highly conjugated organic compounds, and certain biological macromolecules. Measurement is usually carried out in solution.
Explanation:
HELP NOW!
S + O₂ → SO₃
a. What type of reaction is the above reaction? *
b. When balanced, what is the ratio of coefficients for the above reaction? *
Combination Reaction.
Explanation:
FeCl3 + NaOH → Fe(OH)3 + NaCl
[tex]\qquad \qquad\huge \underline{\boxed{\sf Answer}}[/tex]
Here's the solution ~
The required balanced equation is :[tex]\qquad \sf FeCl_3 + 3 \: NaOH \dashrightarrow Fe(OH)_3 + 3 \: NaCl[/tex]
Reactant Side : Iron (Fe) = 1Sodium (Na) = 3Oxygen (O) = 3 Hydrogen (H) = 3Chlorine (Cl) = 3Product side : Iron (Fe) = 1Sodium (Na) = 3Oxygen (O) = 3 Hydrogen (H) = 3Chlorine (Cl) = 3Which type of plate boundary is responsible for creating mountains?
O divergent boundary
O Continental-oceanic convergent boundary
O oceanic-oceanic convergent boundary
O Continental-continental convergent boundary
Answer:
O Continental-continental convergent boundary
Explanation:
Hope it helps.
How are compounds and mixtures different from one another?
Answer:
Compound are substances which can be formed by chemically combining two or more elements. Mixtures are substances that are formed by physically mixing two or more substances.
Explanation:
brainliest?
Answer:
the things they are made out of
