Answer:
hi
Explanation:
Light is the result of electrons moving between defined energy levels in an atom, called shells.
what resource is nonrewable?
A. Pigs
B. Wheat
C. Water
D. Petroleum
Answer:
d
Explanation:
Explain why NH3 has a higher solubility in water than SbHz.
Answer: NH3 has a higher solubility rate than SbH3 because it has much stronger bonds. ... HoCH2CH2OH because it can form two bonds with water compared to the other molecule which can only form one.
HOPE THIS HELPS
The reason salt crystals, such as KCl, hold together so well is because the cations are strongly attracted to:
a
neighboring anions.
b
free electrons in the crystals.
c
neighboring cations.
d
the protons in the neighboring nucleus.
65 g of NaOH is dissolved to make 500 mL of solution. Find moles of NaPH and Molarity of solution.
Answer:
3.25 M
Explanation:
Number of moles = mass/ molar mass
mass of NaOH = 65 g
Molar mass of NaOH = 40 g/mol
Number of moles of NaOH = 65g/40 g/mol = 1.625 moles
Let us recall that;
n = CV
n = number of moles of solute
C = concentration of solution
V = volume of solution
C = n/V
n = 1.625 moles
V = 500/1000 L = 0.5 L
C = 1.625 moles/0.5
C = 3.25 M
how did wolves, whales, and the mystery fossil become so different from their ancestor populations
Explanation:
The differences between whales, wolves, and the Mystery Fossil may have evolved because the ancestors of each evolved in different environments. Populations can become separated into different environments. ... Over generations, two populations of the same species can become more and more different.
Zr + O ⇒
B + O ⇒
Zn + C ⇒
Co + I ⇒
Mg + Br ⇒
WHAT- WHAT GRADE R YOU IN 0,0
46 POINTS!!! help me with chemistry, please!
Water Sugar Lemon Juice Lemonade Percent Yield Leftover Ingredients
946.36g 196.86g 193.37g 719.84g 95% Water and Sugar
4. Try to reduce the amount of leftover ingredients by changing the amount of one, two, or all three starting ingredients. Show your stoichiometric calculations below.
5. During factory inspection, Just Lemons, Inc. discovered that a water valve to the lemonade mixing station was not functioning. Once they repair it, more water will enter the mixing station. From what you know about the limiting and excess ingredients for current lemonade production, what advice would you give engineers about the upcoming increase in water?
Answer:
are you sure it is 95%?????
Explanation:
Question is in the photo
Answer:
c?
Explanation:
Please help me out ........
Answer:c
Explanation:
How does temperature affect the spontaneity of a reaction?
A. Increasing the temperature always makes a reaction less likely to
be spontaneous
B. Increasing the temperature will not affect the spontaneity of a
reaction.
C. Increasing the temperature always makes a reaction more likely to
be spontaneous.
D. Increasing the temperature makes a reaction spontaneous in
some situations.
Answer:
D
Explanation:
took the test
The statement 'increasing the temperature makes a reaction spontaneous in some situations' indicates how temperature affects the spontaneity of a reaction.
What is a chemical reaction?A chemical reaction is a given process in which one or more reactants are converted into different products.
A chemical reaction is composed of catalysts such as enzymes that speed up its velocity.Temperature represents a fundamental variable in a chemical reaction.In conclusion, the statement 'increasing the temperature makes a reaction spontaneous in some situations' indicates how temperature affects the spontaneity of a reaction.
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Choose the correct statement.
1. A single displacement reaction produces an element as a product.
2. A double displacement reaction occurs between an ionic and a covalent compound.
3. Products of a complete combustion reaction are carbon dioxide and water.
4. Synthesis and Decomposition reaction products cannot be predicted with certainty.
Answer:
1
Explanation:
single displacement replaces one element with another and it's product is a pure element.
Estructura correcta de los siguientes compuestos e indique si el nombre está escrito de forma correcta; 1,4-ciclohexadieno
Answer:
En la imagen adjunta.
Explanation:
¡Hola!
En este caso, dados los lineamientos IUPAC que tenemos en cuenta para dibujar la estructura de hidrocarburos cíclicos, para el 1,4-ciclohexadieno, es posible determinar que esta estructura viene dada por hexágono que representa el ciclohexano y dos dobles enlaces en los carbonos 1 y 4 al ser un dieno. Por lo anterior, en la imagen adjunta, puede encontrar la estructura requerida.
¡Saludos!
This video allows us to see the circuit inside a flashlight. After watching the video, write notes in the space provided so that you can build the circuit in question 2.
https://app.edmentum.com/content-delivery//resource/b79af08f-5dcb-48ad-a6f5-f2c6d1e8f518
Answer:The video shows the electric circuit inside a flashlight. The battery provides power to the circuit. A metal strip is connected to the negative end of the battery. When the flashlight’s switch is pressed, the metal strip moves forward. It touches the metal connected to the bulb near the front. This motion closes the circuit, which creates a path for the electricity and causes the bulb to glow.
Explanation: plato
The electric circuit within a flashlight is powered by the battery. See below for more information.
What is a circuit?A circuit is a route that allows an electrical current to flow between two or more paths.
An electronic circuit comprises electronic components such as resistors or diodes joined by a metallic wire that conducts electricity and through which current flows.
From the video in the content;
The electric circuit within a flashlight is powered by the battery.The negative end of the battery is attached to a metal strip. There, the metal strip begins to move forward once the flashlight's switch is pressed. It comes into contact with the metal that is closely connected to the bulb close to the front. This action completes the circuit, allowing the electricity to flow and causing the bulb to light up.Learn more about the circuit here:
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Stem cells can differentiate into how many types of body cells?
PLEASE HELO DOES ANYONE KNOW THE RIGHT ANSWER ??
Answer:
the last one because matter is the amount of space
Which gas law would apply to the following scenario.
A family is going to a party in the mountains (no change in temperature). It was their job to bring balloons. By the time they arrived 2 of the balloons had
popped,
Gay-Lussac's Law
Boyle's Law
Charles Law
Avogadro's Law
What are the mole ratios of the following chemical equation: C3H8 + 5O2 --> 3CO2 + 4H2O?
Answer:Redox and combustion.
Explanation:
C3H8) reacts with oxygen in the air, so C3H8(g) + 5O2(g) = 3CO2(g) + 4H2O(g) Classification: Redox and combustion.
4. In the following reaction: 2NaN3 decomposes to form 2Na + 3N2. If 500 grams of NaN3 decomposes to form 320 grams of Na, how much Na is produced?
180 grams
320 grams
500 grams
a sample of gas X occupies 10 m^3 at a pressure of 120 kPa.if the volume of the sample is compressed to 3m^3 ,what is the new pressure of the gas?
Answer:
400 kPaExplanation:
The new pressure can be found by using the formula for Boyle's law which is
[tex]P_1V_1 = P_2V_2[/tex]
Since we're finding the new pressure
[tex]P_2 = \frac{P_1V_1}{V_2} \\[/tex]
120 kPa = 120,000 Pa
We have
[tex]P_2 = \frac{120000 \times 10}{3} = \frac{1200000}{3} \\ = 400000[/tex]
We have the final answer as
400,000 Pa = 400 kPaHope this helps you
what are some ways that you can change the physical phase of matter?
How does matter change from one state to another
Answer:
Adding or removing energy can change the physical matter.
Explanation:
Like for example changing temperature
How many molecules is 7.22 mole H2O
Answer:
no H2O molecules are produced:)
Explanation:
Answer: 18 g of water occupies one mole and one mole contains Avagadro’s no. of molecules = 6.023*10^23 molecules .
Explanation:question says 72 g of water . 72 g of water occupies 4 moles.
So the no. of molecules in 72 g of water has 4*(6.023*10^23) molecules .
Five liters of air at -35°C is warmed to 89°C. What is the new volume if the pressure remains constant
Answer:
7.61 liters
Explanation:
From the question,
Applying Charles law formula,
V₁/T₁ = V₂/T₂...................... Equation 1
Where P₁ = initial volume of of air, V₂ = Final volume of air, T₁ = Initial Temperature of air, T₂ = Final Temperature of air.
make V₂ the subject of the equation
V₂ = (V₁×T₂)/T₁............... Equation 2
Given: V₁ = 5 liters, T₁ -35 °C = (-35+273) K = 238 K, T₂ = 89°C = (89+273) K = 362 K
Substitute these values into equation 2
V₂ = (5×362)238
V₂ = 1810/238
V₂ = 7.61 liters
A student pours Liquid A through filter paper. the liquid passes through the filter paper, but a residue remains on the filter. Liquid A must have been a(n)
A - Element
B - Compound
C - Plasma
D - Mixture
Answer:
I think it is A.Element maybe
Define stoichiometry
Stoichiometry is the field of chemistry that is concerned with the relative quantities of reactants and products in chemical reactions. For example, when oxygen and hydrogen react to produce water, one mole of oxygen reacts with two moles of hydrogen to produce two moles of water
Answer:
the relationship between the relative quantities of substances taking part in a reaction or forming a compound, typically a ratio of whole integers.
Explanation:
Dont put so much points pal,
If 12 moles of Al2O3
are produced, how many moles of aluminum reacted?
Answer:
if 12 moles are produced then it came 24 moles of Al(OH)3
Explanation:
The number that is written in front of the molecule is called stoichiometry, represents the number of mole of that molecule. 12 moles of [tex]Al_{2}O__{3}[/tex] is produced by 24 mole of Aluminum.
What is stoichiometry?Stoichiometry is a part of chemistry that help us in making relationship between reactant and product from quantitative aspects. It tells about how much part of reactant will be required to produce particular product. Unitary method is always applied in case of stoichiometry chemistry.
The balanced equation is
[tex]4Al+3O_{2}\rightarrow 2Al_{2}O__{3}[/tex]
The mole ratio between [tex]Al_{2}O__{3}[/tex] and Al is 2:4, means to produce 4 moles of [tex]Al_{2}O__{3}[/tex] we need 2 moles of Aluminum
4 mole of [tex]Al_{2}O__{3}[/tex]= 2 moles of Aluminum
1 mole of [tex]Al_{2}O__{3}[/tex]=(1÷2) moles of Aluminum
12 moles of [tex]Al_{2}O__{3}[/tex]= 24 mole of Aluminum
Therefore 12 moles of [tex]Al_{2}O__{3}[/tex] is produced by 24 mole of Aluminum.
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Why is Chemistry so hard? And why is it required when most of us aren't going to use it after high school?
The form in which the chemical energy is stored in cells during photosynthesis
A) Photosynthesis
B)Products
C)Chloroplasts
D)Glucose
Which statement best describes how an existing theory is often affected by the development of new technology?
An existing theory is thrown out and replaced with a completely new theory based on the new observations.
An existing theory is modified so that it can explain both the old and new observations.
An existing theory remains the same because a theory is a proven fact that is always true.
An existing theory is kept unchanged while a new theory is developed to explain the new observations.
Answer: An existing theory is modified so that it can explain both the old and new observations.
Explanation:
Answer:
The correct anwser would be B
Explanation:
PLEASE I NEED HELP ILL GIVE BRAINLYEST
What percentage increase did CO2 experience from 1800 to 2004 AD?
The percentage of CO2 increased 48 percent. Hope this helped!
Waves that we cannot actually see (unlike ripples in water) and that DO NOT need a medium to travel through belong to which category of waves?
Answer:
electromagnetic waves
Explanation:
The waves that do not need a medium to travel through are known as electromagnetic waves.
What are electromagnetic waves?These waves do not need any medium for their propagation or traveling. The waves have different wavelength and energy factors depending upon their rate of propagation. EMR waves travel from the sun to the earth in space.
Examples of electromagnetic waves are Xrays, gamma rays, radio waves, and more.
Find more information about electromagnetic waves here:
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