Answer:
D. 76%
Explanation:
Percent yield=actual/theoretical * 100
38/50 * 100 = 76%
What is the molar mass of ferric acetate, Fe(C,H,O2),?
Answer/Explanation:
193.96 g/mol
what is a wave in science
(no plagiarism please)
Answer:
something that travels through a medium, transporting energy from one location to another location without transporting matter.
Explanation:
Answer:
A wave is a disturbance that moves energy from one to place to onother
i hope i can help
Which of the following explains how movement of material within Earth causes volcanic eruptions?
a
One plate moves below the other due to the movements in inner core
b
One plate moves below the other due to the movements in mantle
C с
A plate slides past another due to the movements in inner core
Od
A plate slides past another due to movements in mantle
Answer: c
Explanation: bc
At what temperature in Kelvin will 0.1243 moles of fluorine exert a pressure of 2.02 atm at a volume of
0.625 L? Answer: 124K
How do I solve this?
Answer:
Explanation:
The formula would be PV=nRT but since were trying to find temp. the formula becomes T=PV/nR (n is the # moles and R is the ideal gas constant which equals 0.0821 for this)
The formula becomes T= 2.02 x 0.625 divided by 0.1243 x 0.0821 then just solve that in the calculator and u get 123.7K or 124K
Focus Question
Q: How can you light two
bulbs brightly with one D-
cell?
PLEASE HELP!
Answer:
A D-cell is a source of electric energy. A bulb is an energy receiver that produces light. To make a complete circuit, electricity must travel in a circle from one end of the battery to the other.
Explanation:
A patient is having trouble chewing their food, so the doctor orders a mechanical soft diet. As the dietician, you prepare a lunch for the patient. It includes chicken salad. What is the total caloric intake for a serving of chicken salad if each serving contains 2.2 g fat, 3.7 g carbohydrates, and 17 g protein (answer in Calories, kcal)?
which of the following uses mechanical energy to function?
A. computer
B. battery
C. microwave oven
D. windmill
Different energy sources can be used to generate electricity. Which of the following uses a nonrenewable energy source to generate electricity?
a hydroelectric power plant
a generator that burns wood
a power plant that runs on oil
a windmill connected to a generator
Answer:
a power plant that runs on oil
Explanation:
A generator a power plant that runs on oil uses non-renewable sources of energy to generate electricity.
Non - renewable energy is an energy source that cannot be replenished within a short period of time. It takes geologic time scales to form such energy sources.
Oil is a fossil fuel and a non-renewable source of energy.
As it is used, the reserve is being depleted.
Answer:
a power plant that runs on oil
Close friendships at work are often bad for the business. true or false and why?
Explanation:
true true true true true true
Answer:
False
Explanation:
Because that is your friend and your friend is helping you in other things that you need some help.
Jesim wants to help Nancy understand the movement that happens during one Earth year, Jassim holds a small globe representing Earth, and Nancy holds a large ball representing the Sun. What should Jessim do to show
Nancy what happens during one Earth year?
Jessim should not move except to slowly spin the globe
Jesim should slowly spin the globe and walk away from Nancy
Jessim should have Nancy walk around him while spinning the ball
Jessim should spin the globe quickly while walking in a circle around Nancy
Answer:
The answer is D jessim should spin the glove quickly while walking in a circle around nancy.
Explanation:
GRADE 5 SCIENCE MYA-2020-2021 Question: 1-9
Mi Poweit is demonstrating the water byde. He shapes mountains out of clay on one end of a glass aquarium to represent land. He then pours some water into the aquarium and places a glass lid on it. Next, he turns on a lamp
above them and finally, he places a container tilled with ice on the glass id. In this model, which choice correctly identifies evidence of condensation?
water droplets talling on the day
war in the bottom of the warm
watering from the clay into the water
waterforming on the id under the container
Answer:
water droplets falling on the clay
Explanation:
i finished this test and it was the right answer so lol
Which phrase best describes an apple?
a. heterogeneous mixture
b. homogeneous compound
c. heterogeneous substance
d. homogeneous mixture
Which of the following statements best describes a limiting reactant? (5 points)
Answer:
The limiting reagent is the reactant that is completely used up in a reaction, and thus determines when the reaction stops. From the reaction stoichiometry, the exact amount of reactant needed to react with another element can be calculated.
Explanation:
The Reactant That Limits The Rate (or Speed) Of A Chemical Reaction. The Reactant That Can Produce The Greatest Amount Of Product.
The reactant that is used up before the others best describes a limiting reactant.
What is reactant?Reactant is a starting material in a chemical reaction.
What is limiting reactant?A limiting reactant is the reactant that is used up first and prevents more product from being made. When the limiting reactants are completely used up, then the reaction stops and no further products will be produced.Hence, the reactant that are used up before the others best describes a limiting reactant.
To learn more about limiting reactant here
https://brainly.com/question/21538336
#SPJ2
How often is Earth's surface being changed?
1 every hundred years
2 never
3 at all times
4 once a year
Answer:
I believe it is 3.
Explanation:
because the earth is constantly shifting.
can someone please help me and ill mark u as brainlest
Answer:
Sure i'll help u! :D
Explanation:
for #1 you do A. I'm not so sure on it tho
For #2 it should be C.
If that didn't help, You can look it up on a website. ok?
Answer:
b, then d
Explanation:
C8H24O16 what is the empirical formula?
Answer:
CH2-h2O is the empirical formula of c8h24o16.
in a 35.0 L tank of N2O3 at STP, how many molecules are there?
Answer:
[tex]9.40x10^{23}molecules[/tex]
Explanation:
Hello!
In this case, since we are given the volume of N2O3 and pressure and temperature for the STP (1.00 atm and 273.15 K), we can compute the moles, considering the ideal gas equation as shown below:
[tex]PV=nRT\\\\n=\frac{PV}{RT} \\\\n=\frac{1atm*35L}{0.08206\frac{atm*L}{mol*K}*273.15K}\\\\n=1.56mol[/tex]
Now, by using the Avogadro's number it is possible to compute the molecules of this case in 1.56 moles:
[tex]molecules=1.56mol*\frac{6.022x10^{23}}{1mol} =9.40x10^{23}molecules[/tex]
Best regards!
Which word identifies this part of a eukaryotic cell?
__C + __H2O → __CO + H2
Answer:
It is balanced
Explanation:
There is 1 Carbon, 2 Hydrogen, and 1 Oxygen on the right and 1 Carbon, 1 Oxygen and 2 Hydrogen on the left. This equation is balanced.
Calculate the volume of 42.0g of tin (density 7.29g/ml)
Calculate the mass of 48 ml of lead (density 11.34g/ml)
Calculate the density of 25.0ml of concentrated hydrochloric acid weighs 34.25g
( I NEED ANSWERS!!!
Answer:
try to calcutlae on paper
Explanation:
try to calculate on paper
Hey
here to help and to serve
Answer:
lol thx
Explanation:
The__is the source of energy used in photosynthesis?
A. Sun
B. Radiant energy
C. Chemical energy
If you can help I would really appreciate it!:)
Answer:
sun
Explanation:
source means where it comes from and the source of energy comes from the sun
Which of the following chemical formulas show three molecules of a compound that has one
NEED FAST
atom of mercury and two atoms of bromine
1. 3Mc2Br
2. Hg3Br2
3. 3McBr2
4.McBr23
5.3HgBr2
6.3Hg2Br
The chemical formula : 3HgBr₂(Mercury(II) bromide)
Further explanationGiven
The chemical formulas of Mercury and Bromine
Required
The appropriate chemical formula
Solution
A molecular formula is a formula that shows the number of atomic elements that make up a compound.
The number of molecules is determined by the coefficient in front of the compound
the number of atoms is determined by the subscript after the atom and the coefficient
Three molecules⇒ coefficient = 3
one atom of Mercury ⇒Hg
two atoms of Bromine ⇒ Br₂
The chemical formula : 3HgBr₂
the mass of 0.0321 moles of Ca (CN)2
The mass of Ca(CN)2 : 92,11 g/mol
Further explanationGiven
0.0321 moles of Ca(CN)2
Required
The mass
Solution
The mole is the number of particles contained in a substance
1 mol = 6.02.10²³
Moles can also be determined from the amount of substance mass and its molar mass
mol(n) = mass(m) : MW(molecular weight)
Input the value :
mass = mol x MW Ca (CN)2
mass = 0.0321 x 92,11 g/mol
mass = 2.957 g
A pure sample of gold has a volume of 25.0 cm3 and a mass of 483 g. What is the density of gold?
Answer:
19.4 g/cm^3
Explanation:
The breaks of a car use 1200 KJ of energy when applied. Half of the mechanical energy of the brakes is transformed to the wheels, while the other half is wasted, release into the environment in the form of heat. How much energy goes toward braking? Thank you, I am having difficulties with this question
Explanation:
half is wasted, release into the environment in the form of heat.
Determine the number of atoms of O in 58.3 moles of Na₂Cr₂O₇.
Answer:
2457.58×10²³ atoms of oxygen
Explanation:
Given data:
Number of moles of Na₂Cr₂O₇ = 58.3 mol
Number of atoms of oxygen = ?
Solution:
First of all we will calculate the number of moles of oxygen in 58.3 moles of Na₂Cr₂O₇.
1 mole of Na₂Cr₂O₇ contain 7 moles of oxygen.
58.3 mol × 7 = 408.1 mol
Number of atoms of oxygen:
1 mole contain 6.022×10²³ atoms
408.1 mol × 6.022×10²³ atoms / 1 mol
2457.58×10²³ atoms
Please calculate the net forces acting on the object. 1 point for the correct 2 points
answer, and 1 point for the correct unit.*
2N
12N
Answer:
Please find the attached file
Explanation:
Section
1
2
7)
Given the equation representing a reaction:
203Pb + 5921 TECn + on
3
4
5
Which type of reaction is represented by this equation?
6
A)
neutralization
8
-9
B)
polymerization
C)
substitution
10
11
12
13
= 14
- 15
16
-17
D)
transmutation
18
19
20
21
Answer:
a
Explanation:
neutalize acidity level
100 POINTS AND BRAINLIEST FOR HELP
Write a paragraph that explains diffusion and osmosis and how it relates to the circulatory system. Each sentence should be typed in the appropriate color.
It should include an introductory sentence that restates the question. A sentence that explains diffusion. A sentence that explains osmosis and at least 2-3 sentences that explain the relationship between diffusion, osmosis and the circulatory system. And, lastly, a conclusion sentence.
Materials are transferred between individual cells and their internal environment through the cell membrane by diffusion, osmosis, and active transport. During diffusion and osmosis, molecules move from a higher concentration to a lower concentration. Osmosis: Osmosis is the movement of solvent particles across a semipermeable membrane from a dilute solution into a concentrated solution. Diffusion: Diffusion is the movement of particles from an area of higher concentration to lower concentration. This would be the diffusion.