Answer:
that is all I know sorry hope that may help you :)
Explanation:
Indicator is a substance which shows different colors in acidic and basic medium. Indicators can be natural (derived from natural sources) or artificial ( man-made) for example :
*Litmus is an indicator. Acid turns blue litmus into red while base turns red litmus into blue
* Turmeric solution does not show change in color (remains yellow) in acidic solution and turns red in basic solution.
what mass of NaNo3 is needed to make 400mL of a 0.3M solution? (molar mass = 84.99)
Theoretical yield: 35.0g
Actual yield: 27.7g
What is the percent yield?
Answer:
Percentage yield=79.14%
Explanation:
Percentage yield=(Actual yield/theoretical yield)*100
Percentage yield=27.7g/35.0g*100
Percentage yield=79.14%
Would a hurricane more likely remain a hurricane if it reached point A or point B? Explain your answer.
Answer:
B
Explanation:
Water gives more energy to the hurricane, so it would stay as one. If the hurricane hits the land, it will start getting smaller till it disappears.
If force of 6.0 N causes a 1.0 kg block to accelerate 4.0 m/s2 to
the right, then what is the force of friction acting on the block?
The force of friction acting on the block is -2N.
To find the force of a friction, the given datas are,
Force = 6N
Mass = 1 kg
Acceleration = 4 m/s².
What is the force of friction?The push or pull on an object that made the changes in the velocity with the mass. The object's or body's is to be at motion or at rest will be determined by Force. It has both the magnitude and direction.
The Net Force of the object can be written by:
Fnet = ma
where m is the mass of the object in kg
a is the acceleration of the object in m/s^2
Substituting the values in the formula,
Fnet = (1.0)(4.0)
= 4 N
We also know that Net force is also the sum of all forces acting on an object. In this case Friction and the Pushing Force is acting on the object. Hence we can write that:
Fnet = Pushing Force + (-Friction)
6N = 4 N - Friction
Friction = - 2N
Hence the force of friction is -2 N.
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An unknown amount of gas has a volume of 12 L and a pressure of 5.6 atm. If the temperature is 205K, how many moles of gas are present
The number of moles of the gas present is 4 moles.
To calculate the numbers of moles of the gas present, we use the formula below.
Formula:
PV = nRT............. Equation 1Where:
P = PressureV = Volumen = Number of moles of the gasR = molar gas constantT = Temperature.Make n the subject of the equation
n = PV/RT............ Equation 2From the question,
Given:
P = 5.6 atmV = 12 LT = 205 KR = 0.0821 L.atm.K⁻¹.mol⁻¹Substitute these values into equation 2
n = (5.6×12)/(0.0821×205)n = 67.2/16.8305n = 3.99n ≈ 4 molesHence, the number of moles of the gas present is 4 moles.
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Which is an example of an accurate manipulation of the ideal gas law?.
The correct manipulation of the ideal gas equation as shown here is (PV)/R=nT.
What is the ideal gas law?
According to the ideal gas law; PV = nRT. Now, this law applies to gases at high temperature and low pressure.
Given this fact, we know that the correct manipulation of the ideal gas equation as shown here is (PV)/R=nT.
Missing parts;
Which is an example of an accurate manipulation of the Ideal Gas Law and explain why?
(PV)/R=nT 1
PV=(nT)/R 2
PV=(RT)/n 3
PV=(nR)/T 4
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A 2000 g sugar-water solution contains 200 g of sugar. The concentration of the solution by mass is
a. 1%
b. 9%
c. 10%
d. 12%
Answer: the answer is letter c which is 1 percent
Explanation:
identify the particles that facilitate the electric conductivity of sodium metal
Answer:
Sodium metal will conduct electricity in both a solid and liquid state, due to 'a sea' of delocalised electrons which can move and are able to carry charge
Sodium metal will conduct electricity only when it is in a liquid state or in solution because of the ionic state which are free to move in this state, allowing them to carry charge and conduct electricity.
What are free electrons ?An electron within a conducting substance (as in a Sodium metal) but not permanently attached to any atom.
Sodium metal will conduct electricity only when it is in a liquid state or in solution because of the ionic state which are free to move in this state, allowing them to carry charge and conduct electricity.
It also have 'a sea' of delocalised electrons which can move and are able to carry charge.
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For an ideal gas, which pairs of variables are inversely proportional to each other (if all other variables are held constant)?
1. V and T
2. n and V
3. T and n
4. P and T
i am 9 and i'm at 3th grade
Increasing the concentration of a reactant shifts the position of chemical equilibrium towards formation of more products. What effect does adding a reactant have on the rates of the forward and reverse reactions?.
Answer:
A.There is no effect on the forward and reverse reactions. For an equilibrium reaction, the forward and reverse rates are always equal.
B. Both the forward and reverse reactions speed up by the same amount.
C. The forward reaction speeds up immediately. As more product is made, the reverse reaction starts to speed up as the forward reaction starts to slow down until they are equal.
D. The forward reaction slows down initially. As the reaction proceeds, the reverse reaction slows down to meet the new forward reaction.
E. The forward reaction speeds up. Eventually, production of the product speeds up the reverse reaction rate to match the new forward rate.
F. It is impossible to say without more specific information.
Explanation:
5. When baking cookies, it is important to correctly identify the white granular substance you are
putting into the cookies. Instead of sugar, my grandma put 97.21 grams of salt (NaCl) in her
batch of cookies! How many moles of salt were in the cookie dough?
Answer:
I multiply 97.21 by the amount of cookies you have.
Explanation:
i dont know if this is correct but i multiplyed it by two and got 194.42
Why is it impossible to measure the standard reduction potential of a single half-reaction?.
wrwtx 2m2q/qre .3dqs. rqxq3
shape to quantity
43. 5 g of cesium explosively reacts with water to form hydrogen gas and cesium hydroxide. How many moles of hydrogen gas were formed?
Answer:
See the attached images for solution.
Explanation:
How many moles does 21. 7 L of gas at STP represent?
Answer:
.96875 moles
Explanation:
22.4 liters per mole at STP for a gas
21.7 / 22.4 = .96875 moles
What is the molarity of a solution that contains 6 moles of CaCl2 in 4 liters of solution?
A- 1.5M
B- 3.5M
C-3M
D-6M
Answer:
1.5 M
Explanation:
Molarity is mols/L
take 6moles÷4 L = 1.5M or mol/L
hope this helps, good luck!
What are three ways to increase the rate of solvation.
Answer:
The rate of solvation is depends on temperature and surface area. Increasing the temperature of the solvent increases the rate of solvation. Increasing the surface area of the solute increases the rate of solvation. Also, agitating the system increases the rate of solvation.
Explanation:
hope this helps.
This is the probability distribution of an electro in a atom or molecule
Answer:
electron orbitals (okay nayn manghula kana Lng)
why is it important to control the non-tested variables in an experiment?
Answer:
In experiments, a researcher or a scientist aims to understand the effect that an independent variable has on a dependent variable. Control variables help ensure that the experiment results are fair, unskewed, and not caused by your experimental manipulation.
Explanation:
I hope this helps out.
How many hydrogen atoms (H’s) are there in the following compound: 5H20
A. 2
B. 10
C. 5
D. 20
Answer:
10 atoms
( 5 molecules )......
If your sample of vinegar is approximately 4.76% (w/w), what volume should you use so that approximately 40 mL of 0.1 M NaOH is required to neutralize your sample of vinegar
Based on the concentrations given, the volume of vinegar required is 5.04 mL.
What is the concentration of the vinegar solution?The concentration of a solution is the amount of solute in a given volume of solution.
Concentration can be expressed as:
molar concentration percentage concentrationThe concentration of the vinegar solution is 4.76% (w/w). This means that 4.76 g of vinegar is present in 100 g of solution.
Mass of vinegar = 4.76 g
molar mass if vinegar = 60 g/mol
moles of vinegar = 4.76/60 = 0.0793 moles
volume of solution/water = 100 mL or 0.1 L
Molarity of vinegar = 0.0793/0.1 = 0.793 M
1 mole of vinegar reacts with 1 mole of NaOH
let the volume of vinegar required be V
0.793 M × V = 40 × 0.1
V = 4/0.793
V = 5.04 mL
Therefore, the volume of vinegar require is 5.04 mL.
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Which type of chemical reaction occurs in ca cl2 right arrow. cacl2? synthesis combustion single replacement double replacement
The type of chemical reaction occurs when calcium and chloride reacts to form calcium chloride is synthesis reaction.
What is synthesis reaction?Synthesis reaction is also known by the name of combination reaction in which two reactants combine for the formation of the product.
Given chemical reaction is also a synthesis reaction as in that calcium and chloride reacts with each other for the formation of calcium chloride as:
Ca + Cl₂ → CaCl₂
Combustion reaction are those in which carbon dioxide and water is produced, but in given reaction that is not happening so that was not combustion reaction.In replacement reaction one atom of any reactant will replace by another atom, but this is not the case in given reaction.In double replacemnt two atoms or molecules will replace, so given reaction is not that.Hence given chemical reaction is a synthesis reaction.
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Answer:
B, synthesis
Explanation:
Edge 2022
Based on the chemical equation, use the drop-down menu to choose the coefficients that will balance the chemical equation: ()bao2 ()h2so4 → ()h2o2 ()baso4
Based on the given chemical equation, the value of coefficient that is used in the reaction before each molecule is 1.
What is balanced equation?Balanced chemical equations are those equation in which each element is present in equal amount on both side of the chemical reaction.
Given chemical reaction is:
BaO₂ + H₂SO₄ → H₂O₂ + BaSO₄
Above reaction is balanced as all elements are present in equal amounts on both sides. So, the value of coefficients is 1.
Hence the required coefficients is 1.
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Answer:
Every single box is 1.
Explanation:
A student prepared a stock solution by dissolving 15. 0 g of koh in enough water to make 150. Ml of solution. She then took 15. 0 ml of the stock solution and diluted it with enough water to make water to make 65. 0 ml of a final solution. What is the concentration of koh for the final solution?.
weight of dissolving KOH is=10 g KOH molecular weight is= 56.1 moles
Have a nice day!
Why does Buckminsterfullerene, with a formula of C60, have a simple covalent structure instead of a giant covalent structure?
Answer:
HOPE THIS HELPS
Explanation:
They are made up of large molecules so are not classed as giant covalent networks . Weak intermolecular forces exist between buckyballs. These need little energy to overcome, so substances consisting of buckyballs are slippery and have lower melting points than graphite or diamond .
How many moles of 02 should be supplied to burn 1 mol of C3H8(propane) molecules in a camping stove?
Answer:
This tells you that when 1 mole of propane undergoes combustion, 3 moles of carbon dioxide are produced. You can thus say that when 2.0 moles of propane react, you will get 2.0moles C3H8 ⋅ 3.moles CO2 1mole C3H8 = 6.0 moles CO2
Explanation:
Does anyone know this one?
This part is just telling you what they mean by hallowed be Your name is
Hope this helps :))
what is the relationship between sign of a charge and the direction of electrostatic force
Answer:
The direction of the force vector depends on the sign of the charges. If the charges are the same, the force points away from the other charge.
Explanation:
C. A sample of copper is 4.46 moles. Determine how many atoms your piece of metal
Contains
Answer:
[tex]2.686*10^{24}[/tex]
Explanation:
Avogadro's number, 10 x 10^{23}, represens the number of atoms in a single mole of any substance.
Since we already of have the mole amount and don't need to calculate that from the grams of the substance, we can simply multiple Avogadro's number by the amount of moles given.
[tex]4.46 *(6.022*10^{23}) = 2.686 * 10^{24}[/tex]
What is the core of the earth made of?
Answer:
The core of the earth is made of iron-nickel alloys.
is a condition characterized by an overactive thyroid gland.
A. Acromegaly
B. Dwarfism
C. Diabetes insipidus
D. A goiter