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3. Conducts electricity in aqueous solution.
ThanksHope it helps.In the lab you take 50.0 mL of a 40.0 M NaOH solution and then add water to it until it reaches the 500.0 mL mark of the flask. What is the concentration of the new solution?
Answer:
4.00M NaOH
Explanation:
A 50-ml amount of 40.0M NaOH contains
(40.0 mol NaOH/1 L)×(0.0500L) = 2.00 mol NaOH
Adding enough water to make a 500.0 mL NaOH solution, the new concentration of this solution is
2.00 mol NaOH/0.5000 L = 4.00M NaOH
Arriving back from school, you decide to microwave a Hot Pocket for a snack. You have a
1500W microwave that took 3 minutes to cook the Hot Pocket.
Answer:
Kristy thank you doing today hope you doing recently
Radio waves, ultraviolet rays, X-rays, and gamma rays are all examples of electromagnetic radiation, as are microwaves.
What is Microwave?There are several uses for microwaves, including for communications, radar, and—possibly for the most part—cooking. Waves or particles of electromagnetic radiation with various wavelengths and frequencies are communicated.
The electromagnetic spectrum (EM spectrum) is the name given to this wide spread of frequencies. In general, the spectrum is divided into seven areas in ascending sequence of increasing energy and frequency and decreasing wavelength.
Radio waves, microwaves, infrared (IR), visible light, ultraviolet (UV), X-rays, and gamma-rays are some of the common names for these types of energy. In the electromagnetic (EM) spectrum, microwaves are found between radio and infrared light.
Therefore, Radio waves, ultraviolet rays, X-rays, and gamma rays are all examples of electromagnetic radiation, as are microwaves.
To learn more about microwaves, refer to the link:
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Which of the following metals has the main part of the garden fork been made from? a. aluminum b. iron c. copper d. zine
Answer:
Its letter A
Explanation:
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Garden forks were originally made of wood, but the majority are now made of forged carbon steel or stainless steel. Hence, option A is correct.
What is metals?Metals are opaque, lustrous elements that are good conductors of heat and electricity.
A garden fork is used similarly to a spade in loosening and turning over soil.
Its tines allow it to be pushed more easily into the ground, and it can rake out stones and weeds and break up clods, it is not so easily stopped by stones, and it does not cut through weed roots or root-crops.
Garden forks were originally made of wood, but the majority are now made of forged carbon steel or stainless steel.
Hence, option A is correct.
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what is the dependent variable in the experiment shown
Answer: you didn’t but the equation if you want I can show you.
Explanation:
A gas has a volume of 45.0 mL and a pressure of .98 atm. If the pressure increased to 2.1 atm and the temperature remained the same, what would be the new volume?
Answer: The new volume is 95.45 mL.
Explanation:
Given: [tex]V_{1}[/tex] = 45.0 mL, [tex]P_{1}[/tex] = 0.98 atm
[tex]P_{2}[/tex] = 2.1 atm, [tex]V_{2}[/tex] = ?
According to Boyle's law, at constant temperature the pressure of a gas is inversely proportional to its volume.
Therefore, formula used to calculate the new volume is as follows.
[tex]\frac{P_{1}}{V_{1}} = \frac{P_{2}}{V_{2}}[/tex]
Substitute the values into above formula as follows.
[tex]\frac{P_{1}}{V_{1}} = \frac{P_{2}}{V_{2}}\\\frac{0.98 atm}{45.0 mL} = \frac{2.1 atm}{V_{2}}\\V_{2} = 95.45 mL[/tex]
Thus, we can conclude that the new volume is 95.45 mL.
answer asap please!!
Which of the following scenarios would result in the LEAST amount of friction?
A. A box being pushed across a gravel driveway
B. An ice skater gliding across the ice
C. The breaks on a car being applied
D. A paratrooper coming back down to earth with a parachute
Answer:
I think it would be D. it may be wrong but everything else has a lot of friction.
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.
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.
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Which statement is correct about the rate of chemical reactions? (5 points) It increases when the temperature decreases. It increases when a catalyst is added. It does not depend on the temperature. It does not depend on the presence of catalysts.
There is an increase in temperature when the rate of chemical reactions increases.
What is a chemical reaction?The chemical reaction is the process in which the two or more substances where the reactions are converted into one or more different substances. These may be either chemical elements or compounds.
The chemical reaction rearranges the atoms of the reactants to create the different substances of the product. The speed of the reaction depends on the rate of temperature and as well reactant itself.
Find out more information about the chemical reactions.
brainly.com/question/16416932
Answer:
It increases when a catalyst is added.
Explanation:
"A catalyst is a substance that can be added to a reaction to increase the reaction rate without getting consumed in the process. Catalysts typically speed up a reaction by reducing the activation energy or changing the reaction mechanism." (Khan Academy)
How many iron atoms are in Fe2O3?
Answer:
2 iron atoms in Fe2O3
what is:
Na2O+SO2 =
for chemistry
Na2SO3 – Sodium sulfite
I NEED HELP FAST
Identify the charges that are negative
А
B
this process is called..
Answer:condensation
Condination
Explanation:
helppppppp plzzzzzzz
Answer:
is this done on a chrombook? it looks like it pls i need points to get to 1000 points so please just leave my answer
Explanation:
PLS HELP ASAP NO LINKS PLS
If a person wanted to engineer a new type of communication device, what field of study would be the most useful?
chemical engineering
electrical engineering
optical engineering
mechanical engineering
Answer:
electrical and mechanical engineering
Answer:
electrical engineering
Explanation: i took quiz
If an element forms a 1- ion, in which group of the periodic table would you
expect to find it?
O A. 18
B. 2
C. 1
O D. 17
Answer:
D. 17
Explanation:
Halogens (group 17) are most likely to form a -1 ion. This is because they want to complete their octet. A prime example of this is sodium chloride. Sodium chloride is an ionic compound. Sodium gives up its valence electron, therefore, recieving a +1 charge, and Chlorine takes it, giving it a -1 charge. Chlorine is also in group 17, halogens.
Answer: the answer is D.17
Explanation:
Are elements and compounds the same thing?
Answer:
no
Explanation:
a compound is a mixture of two or more elements while a element is by itself.
Answer:
no
Explanation:
elements are their purest form. compunds are a mix of mutiple elements.
What does sea water, glacial ice, and an alloy like bronze have in common
chemically?
Answer:i dont even know
Explanation:
help me
How many moles of H2 gas are generated when 4.0 moles of Na react?
2Na + 2H2O --> 2NaOH + H2
Answer:
2 moles of H2
Explanation:
From the equation
2 mol Na gives 1 mol H2
When we have 4 mole of Na then we get 2 moles of H2
Answer:
1.204 × 1024
Explanation: i just did this question
~I will give the brainliest~
In a plot of ln(k) vs. 1/T, a slope of –4.3 x 102 K is obtained. What is the activation energy for this reaction?
A. -4300 J/mol
B. 4300 J/mol
C. 3573 J/mol
D. -3573 J/mol
E. 0.0023 J/mol
Answer:
DExplanation:
Given the reaction below, how many grams of aluminum (Al) would be
formed from 5.0 g of Fe? Reaction: 9 Fe + 4 A1:0, --> 3 Fe:O. + 8 AIM
a. 0.0029 g AI
b. 2.1 g Al
c. 2.7 g AI
d. 4.4 g AL
Why are young plants like but not identical to their parents?
Answer:
Dna
Explanation:
You're welcome
Which figurative device is used in And Spring herself, when she woke at dawn, Would scarcely know that we were gone.
Answer:
personification
Explanation:
Personification can be regarded as literary tool which is used when qualities or abilities that can only be portrait by human or that can only be seen in human is given to an animal or object. This creative literary tool is been used to adds interest as well as fun to poems or stories. It is been used by writers to bring non-human things to life, and It helps the reader to have better understand of the writer's message.
When propane burns, heat and light are produced. Where does this energy come from?
Answer:
It releases energy from the breaking of bonds during its combulsion stages.
Explanation:
(This expanation is not from me, its from qizzlet.com. but the anserw is made by me)
When propane burns, heat and light are produced. Where does this energy come from? The energy comes from, the breaking of the bonds and it is being released.
have a great dayDescribe all the relationships between pressure, volume, and
temperature
Answer:
volume is how much an object can hold, pressure is the force the pushes things into the center, and temperature, if extreme heat can cause pressure. and volume of an object can hold certain amounts of pressure from temperature.
Explanation:
What gets released back into the air when humans and animals breathe ? What is this process called?
Answer:
Respiration is the process humans and animals breathe c02 out
Answer:
CO2 is released into the air when we breathe
The process is called respiration
how do wavelengths relate to energy?
Answer:
Just as wavelength and frequency are related to light, they are also related to energy. The shorter the wavelengths and higher the frequency corresponds with greater energy. So the longer the wavelengths and lower the frequency results in lower energy.
Explanation:
Which of the statements about atoms are true?
1. All matter is made of atoms.
2. Air is between atoms in substances
3. There is nothing between atoms in a gas.
4. Living organisms are made of atoms.
Select all that apply.
Answer:
number 1 I think
Explanation:
I did this at school but forgot
2. Calculate the boiling point of a 1.7 m ethylene glycol solution.
a gold ring contains 3.2 grams of pure gold. how many moles of gold are in the ring?
Answer:
0.0162 moles (3 s. f.)
Explanation:
moles = mass / Ar
moles = 3.2 / 197.0
moles = 0.0162436
moles = 0.0162 (3 s. f.)
