Answer: B 8.40 g
Explanation:
(52.6 cm)(1.214cm) what is the product expressed to the correct number of significant figures?
Which statement describes an electrolyte?
When an electrolyte dissolves in water, the resulting solution conducts an electric current.
2. Given the following balanced chemical equation: 3ZnO + 2Li3N
-->
Zn3N2 + 3Li20
If 3.14 g of ZnO reacts with 3.14 g of Li3N,
a. Identify the limiting reactant.
b. Identify the reactant in excess.
c. How many grams of Zn3N2 are formed?
d. How many grams of the excess reactant are needed for the reaction?
e. How many grams of the excess reactant are left at the end of the reaction?
Answer: For question, C. 224.1534
Explanation:
1 mole is equal to 1 moles Zn3N2, or 224.1534 grams.
PLEASE HELP ASAP!!
57. Sodium sulfate is used in the manufacture of detergents.
a. Identify each of the component elements of sodium sulfate, and write the compound's chemical formula.
b. Identify the compound as ionic or covalent.
c. Calculate the percent by mass of each element in sodium sulfate.
Answer:
See Explanation
Explanation:
The formula of sodium sulphate is Na2SO4. The component atoms in the compound are; sodium, sulphur and oxygen.
The compound is ionic. it is composed of sodium ions and sulphate ions.
The molar mass of sodium sulphate = 142 g/mol
percentage by mass of sodium = 2* 23/142 * 100 = 32.39 %
percentage by mass of sulphur = 32/142 * 100 = 22.5%
percentage by mass of oxygen = 4 * 16/142 * 100 = 45.1 %
Help ASAP brainly if you get it right for me please …
Answer:
Explanation:
The answer would be d
A gas is confined in a cylinder fitted with a movable piston. At 27ºC, the gas occupies a volume of 2.0 L under a pressure of 3.0 atm. The gas is heated to 47ºC and compressed to 5.0 atm. What volume does the gas occupy in its final state?
A: 0.78 L
B:1.3 L
C:2.1 L
D:0.48 L
The volume of the gas is 1.27 L at a temperature is 47°C and the pressure is 5.0 atm. Therefore, option (B) is correct.
What is the ideal gas equation?The ideal gas equation is described as the equation of the state of a perfect gas. The ideal gas equation is the product of the pressure and volume of one-mole gas is equal to the multiplication of the absolute temperature and gas constant.
The mathematical equation for a perfect gas is as follows:
PV = nRT
where n is the moles of an ideal gas, P is the pressure of the gas, V is the volume, and R is the universal gas constant.
Given, the initial volume of the gas, V₁ = 2.0 L
The initial temperature of the gas, T₁ = 27° C = 300.15 K
The initial pressure of the gas, P₁ = 3.0 atm
The final temperature of the gas, T₂ = 47° C = 320.15 K
The initial pressure of the gas, P₂ = 5.0 atm
We know that for an ideal gas:
[tex]\frac{P_1V_1}{T_1} =\frac{P_2V_2}{T_2}[/tex]
[tex]V_2=\frac{P_1V_1T_2}{T_1P_2}[/tex]
[tex]V_2= \frac{3.0\times2.0\times320.15}{5.0\times 300.15}[/tex]
[tex]V_2= 1.27 L[/tex]
Therefore, the volume of the gas in its final state is equal to 1.27 L when the gas is heated to 47ºC and compressed to 5.0 atm.
Learn more about ideal gas equation, here:
brainly.com/question/3637553
#SPJ2
What happens to water molecules when a large quantity of thermal energy is added to water in the liquid state?
Answer:
The molecules gain kinetic energy, more farther apart, and become a gas.
Explanation:
Answer:
Explanation:
Continued heating of liquid water causes the molecules to vibrate even faster, steadily raising the temperature, Freezing When liquid water freezes, it releases thermal energy and turns into the solid-state, ice.
PLEASE HELP THIS IS SCIENCE
I'm pretty sure the answer is A.
Answer:
where is the answer??
Please do not just take the points without awnsering the question.
A
region that has a specific
climate and a specific
community of plants and
animals
Answer: A biome is part of the biosphere. Biomes can influence each other. terrestrial biomes
Explanation:
Did NASA invented thunderstorms to cover up the sound of space battles
Answer:
Nope.
Explanation:
No, I do not believe that NASA invented thunderstorms to cover up the sound of space battles. For example, Benjamin Franklin is noted to have experimented with lightning in the 1700s, well before NASA or NACA existed. Therefore, NASA did not invent the concept of thunderstorms.
if you expect the unexpected is it still unexpected??
Es un cambio natural o provocado, donde se produce energía para agua y dióxido de carbono: a)Precipitación. b)Fermentación c) Efervecencia. d) Combustión.
Answer:
d) Combustión.
Explanation:
¡Hola!
En este caso, dado que estamos enfocados en el concepto de cambio químico, el cual se caracteriza por exhibir un cambio en la composición e identidad de las sustancias iniciales (reactivos) a otras finales (productos).
Ahora bien, como se nos dice que los productos de este cambio químico son energía, agua y dióxido de carbono, inferimos que el nombre de este proceso es d) Combustión, por ejemplo la combustion del gas natural para calentar nuestras comidas en la cocina.
¡Saludos!
4.1.3 Quiz: Heat
Question 15 of 15
The sum of the kinetic energies and potential energies of all of the molecules
in a substance is called the energy of the substance.
Answer here,
SUBMIT
Answer:
Internal
Explanation:
Internal energy is the sum of kinetic and potential energies of all the molecules in a system.
can engineered food affect the environment? why? or why not?
Have GM crops caused damage to the environment? Crops do not damage the environment simply because they are GM. Some farming practices, such as the overuse of herbicides resulting in the excessive eradication of wild plants from farmland have been shown to harm the environment.
Some benefits of genetic engineering in agriculture are increased crop yields, reduced costs for food or drug production, reduced need for pesticides, enhanced nutrient composition and food quality, resistance to pests and disease, greater food security, and medical benefits to the world's growing population.
Answer:
Yes
Explanation:
Food that comes from the engineering food factories wrapped in plastic which can be dangerous for the environment.
Calculate the average reading for all three trials for both the wet bulb and dry bulb thermometers. Convert the average
temperatures for both thermometers to Celsius using this formula:
(°F - 32) = °C.
Answer: °32= 0 °C.
Explanation:
Answer:
Explanation:
Please add the temperature readings from all three trials for both thermometers. Will do the calculation with readings.
Consider the Hertzsprung Russell diagram seen here. We can use this diagram to classify stars and determine their characteristics.
The color of a star is determined by its temperature: the hottest stars are blue and the coolest are red. The Sun has a surface
temperature of 5,500°C and it appears yellow. The diagram also indicates that temperature coincides with luminosity: the hotter the
star, the higher the luminosity. You can also tell the size of each star from the graph as the larger the radius, the higher the
temperature and luminosity. Regardless of a star's position in the diagram, the energy that results in high temperatures and the stars
luminosity is generated by what process?
W
A)
nuclear fusion
B)
nuclear fission
gravitational forces of swirling gases
D)
friction generated by gravitational force
Answer:
Explanation:
A- nuclear fusion
Phytoplankton are a diverse group of unicellular organisms that are neither plants nor animals. Phytoplankton use sunlight, carbon dioxide, and nutrients to live and grow. Do you think phytoplankton are producers, consumers, or decomposers? Explain your reasoning.
Answer:
They are producers
Explanation:
Phytoplankton are producers and this is because they synthesis their own food and produce energy. They photosynthesized and convert carbondioxide and water in the presence of light energy and chlorophyll to carbohydrates and oxygen. They are producers because they produce their own food.
When the heat wave passes and temperatures
become mild, electrical demand decreases. What
needs to be done to reduce electricity output in
response to this decreased demand?
the answer: lowering the control rods
Answer:
lowering the control rods
Explanation:
what type of symbiosis do certain bacteria live in human intestines, where they get food and help humans break down their food.
Answer: Acidophilus (lactobacteria)
Explanation:
This bacteria keeps our gut healthy.
Only producers are able to capture energy from the sun and the matter from the environment to make food.How does energy that come from the sun get to every other organism?How does matter from the environment enter every other organism?
Answer:
Explanation:
Plants get energy from sunlight to produce carbohydrates. When a consumer such as herbivore consume plants, he gets energy and when a canivore or omnivore consume the primary consumer, energy is also transfered to them and this is called food chain.
Matter from the environment which include fallen leaves or trees will decompose after a while in the ground when decomposers begin to act on it and it will eventually give them energy. Decomposer help break down organic matter such as leaves,dead animals and get little amount of of energy in the energy flow pyramid
how many grams of copper do you have if you have 2.00 moles of copper
Answer:
We assume you are converting between moles Copper and gram. You can view more details on each measurement unit: molecular weight of Copper or grams.
NEED ASWER FAST !!!
The equation below represents the main ingredients a vendor uses to make the double cheeseburgers he sells.
1 bun + 2 hamburger patties + 2 slices of cheese à 1 double cheeseburger
The double cheeseburgers sell for $2 each. The vendor has 1326 buns, 2624 hamburger patties and 2004 slices of cheese. How much money will the vendor make selling the double cheeseburgers
Answer:______ dollars
Answer:
1326
2624÷2=1312
2004÷2=1002
1002*2=$2004
Explanation:
2004 dollars
Answer:
.-.
Explanation:
ILL GIVE YOU BRAINLIEST!!The type of biome that we live in here in Knightdale, NC is what? *
1 point
A Tundra
A Savannah
A Tropical Rainforest
A Temperate Deciduous Forest
A Temperate Rainforest
A Boreal Forest
Answer:
Temperate Deciduous Forest
Explanation:
Determine the mass in grams of Avogadro's number of C12H22O11
Answer:
2.059524x10^26 if im not wrong
Explanation:
avogadro's number is 6.022x10^23
What is the name of NaC2H3O2?
The chemical name for NaC₂H₃O₂ is sodium acetate.
Sodium acetate is a compound that consists of sodium ions (Na+) and acetate ions. It is also known by its chemical formula CH₃COONa. The compound is commonly found in both solid and aqueous forms.
Sodium acetate is produced by the neutralization reaction between acetic acid and sodium hydroxide. It can also be obtained by reacting sodium carbonate with acetic acid. The resulting product is a white crystalline solid that is highly soluble in water.
One of the notable properties of sodium acetate is its ability to act as a buffer solution, meaning it can resist changes in pH. It is often used in various applications.
To learn more about the chemical name, follow the link:
https://brainly.com/question/30631355
#SPJ6
i need the answer ASAP
in the electromagnetic spectrum
Fact: wavelength range: 1cm to 1m
-radio wave
-microwave
-infrared waves
-visible light
-ultraviolet rays
-X-rays
-Gamma-rays
-cosmic rays
Answer:
Visible light
Explanation:
As mentioned in the first section of Lesson 2, our eyes are sensitive to a very narrow band of frequencies within the enormous range of frequencies of the electromagnetic spectrum. This narrow band of frequencies is referred to as the visible light spectrum. Visible light - that which is detectable by the human eye - consists of wavelengths ranging from approximately 780 nanometer (7.80 x 10-7 m) down to 390 nanometer (3.90 x 10-7 m). Specific wavelengths within the spectrum correspond to a specific color based upon how humans typically perceive light of that wavelength. The long wavelength end of the spectrum corresponds to light that is perceived by humans to be red and the short wavelength end of the spectrum corresponds to light that is perceived to be violet. Other colors within the spectrum include orange, yellow, green and blue.
In three molecules O2, HCI, and F2, what atom would have a partial negative charge, setting up a dipole moment?
A) oxygen
B) hydrogen
C) chlorine
Answer: a.Oxygen
Explanation:
A day on Earth is about 24 hours.
What does 24 hours represent?
O A. the time it takes the Moon to orbit Earth once
B. the time it takes Earth to spin once on its axis
O c. the time it takes the Sun to travel once around Earth
D. the time it takes Earth to travel once around the Sun
What can be concluded about the purpose many robots will have in the future
The author wanted to revise this story to allow readers to understand more fully how Coach Wilkins felt about the banquet and his career. What change would be MOST effective? Include the point of view of the coach by adding his thoughts and dialogue. A) Remove all the details about Josh, the cafeteria workers, and Principal Edwards B) Include more information on the activities with which Coach Wilkins was involved. Change the details to have Coach Wilkins deciding to teach social studies and coach footbalL D) y Comprehension
Answer:D
Explanation:i did the usa test prep
Answer:answer is D
Explanation:
determine the number of moles and mass of the sample of argon occupying 37.8L at STP
Answer:
The number of moles and mass of the sample of argon occupying 37.8L at STP are 1.6875 moles and 67.41 grams respectively.
Explanation:
The STP conditions refer to the standard temperature and pressure. Pressure values at 1 atmosphere and temperature at 0 ° C are used and are reference values for gases. And in these conditions 1 mole of any gas occupies an approximate volume of 22.4 liters.
Then you can apply the following rule of three: if by definition of STP 22.4 L are occupied by 1 mole of Ar, 37.8 L of Ar are occupied by how many moles?
[tex]amount of moles=\frac{37.8 L* 1 mole}{22.4 L}[/tex]
amount of moles= 1.6875 moles
The atomic weight of Ar is 39.948 g/mol. So the mass of the sample of argon can be calculated as:
1.6875 moles* 39.948 [tex]\frac{g}{mol}[/tex] = 67.41 grams
The number of moles and mass of the sample of argon occupying 37.8L at STP are 1.6875 moles and 67.41 grams respectively.