Answer:
Mercury is a chemical element with symbol Hg and atomic number 80. Classified as a transition metal, Mercury is a liquid at room temperature.
...
Explanation:
Answer:
Mercurous nitrate!
How many grams of chlorine would exert a pressure of 610 torr in a 3.26-liter container at standard temperature? 4.25gCL
Answer:
[tex]m=8.28gCl_2[/tex]
Explanation:
Hello there!
In this case, according to the given information, it possible for us to realize that this problem is solved via the ideal gas equation:
[tex]PV=nRT[/tex]
By which we solve for the moles of chlorine gas as shown below:
[tex]n=\frac{PV}{RT}[/tex]
Next, we plug in the given pressure (in atm), the volume and standard pressure (273.15K) to obtain:
[tex]n=\frac{610/760atm*3.26L}{0.08206\frac{atm*L}{mol*K}*273.15K}\\\\n=0.117molCl_2[/tex]
Then, since the molar mass of chlorine gas (Cl2) is 70.9 g/mol, the mass of this gas turns out to be:
[tex]m=0.117molCl_2*\frac{70.9gCl_2}{1molCl_2} \\\\m=8.28gCl_2[/tex]
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Which part of the atom is most directly involved in chemical bonding?
Answer:
Electron
Explanation:
the symbol of the eyes of symbol of shayambhunath stupa
Explanation:
The symbol of the eyes of syambhunath stupa refers to the eyes of gautam buddha also known as the eyes of wisdom. These eyes are prevalent throughout the country and have become a symbol of peace.
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What is the mass of 6.40 moles of copper(II)chloride (CuCl2)?
Answer:
860. g CuCl₂
General Formulas and Concepts:
Atomic Structure
Reading a Periodic TableCompoundsMolesStoichiometry
Using Dimensional AnalysisExplanation:
Step 1: Define
[Given] 6.40 mol CuCl₂
[Solve] g CuCl₂
Step 2: Identify Conversions
[PT] Molar Mass of Cu: 63.55 g/mol
[PT] Molar Mass of Cl: 35.45 g/mol
Molar Mass of CuCl₂: 63.55 + 2(35.45) = 134.45 g/mol
Step 3: Convert
[DA] Set up: [tex]\displaystyle 6.40 \ mol \ CuCl_2(\frac{134.45 \ g \ CuCl_2}{1 \ mol \ CuCl_2})[/tex][DA] Multiply [Cancel out units]: [tex]\displaystyle 860.48 \ g \ CuCl_2[/tex]Step 4: Check
Follow sig fig rules and round. We are given 3 sig figs.
860.48 g CuCl₂ ≈ 860. g CuCl₂
(Thermodynamics question) When dynamite and oxygen create an explosion, the q value for the system (reactants), would be __
a. positive
b. negative
c. zero
Please help and thank you
Answer:
C
Explanation:
This is a chemical reaction, because only the electrons were rearranged
Select all that apply.
When the products of a reaction have less energy than the reactants:
The reaction is exothermic.
The reaction is endothermic.
The reactants lost internal energy.
The change in enthalpy is positive.
Answer:
The reaction is endothermic
Explanation:
we know that the reactants had to get energy from its surroundings which means that the reaction is endothermic
How many moles of hydrogen gas (H2) are required to react completely with 0.75 moles of nitrogen
gas (N2)?
Answer:
2.25 moles H2
Explanation:
The equation N2+ 3H2 > 2NH3
1 mol of N2 gives 3 mol of H2
Then
. 75 mole N2 give 3*.75 = 2.25 moles of H2
Describe how electromagnetic waves are formed and
travel through space.
Answer:
Electromagnetic waves are created by a charged particle that generates an electric field. The electric field creates a magnetic field. As the charged particle moves, the electric field and magnetic field keep changing, which causes the wave to move
Answer:
Electromagnetic waves are formed by charged particles which create an electric field. The electric field generates a magnetic field. As the particle moves, the electric field changes, which causes the magnetic field to change.
Explanation:
Edge, 2022.
What process helps to purify water in nature?
Answer:
Filtration,Sedimentation and distillation
Explanation:
These 3 are physical processes which are commonly used in nature while in chemical processes,Chlorination is done to eliminate bacteria and other germs present
Happy 2 have helped in some way
the greenhouse effect
The greenhouse effect refers to global warming as a consequence of the accumulation of greenhouse gases.
What are greenhouse gases?Greenhouse gases are different types of gaseous elements that trap solar radiation on the Earth's surface.
The most important greenhouse gases include, among others, methane and carbon dioxide (CO2).
In conclusion, the greenhouse effect refers to global warming as a consequence of the accumulation of greenhouse gases.
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a. 35
b.65
c.81
d.180
I think it's 80 . 12
pls tell me if correct
What’s the empirical formula of a molecule containing 65.5% carbon, 5.5% hydrogen, and 29.0% oxygen?
What would make oppositely charged objects attract each other more?
increasing the positive charge of the positively charged object and increasing the negative charge of the negatively
charged object
decreasing the positive charge of the positively charged object and decreasing the negative charge of the negatively
charged object
increasing the distance between the positively charged object and the negatively charged object
maintaining the distance between the positively charged object and the negatively charged object
Answer: increasing the positive charge of the positively charged object and increasing the negative charge of the negatively charged object.
Explanation:
edge
Answer:
Your answer is A.
Explanation:
How many total atoms are in 1 mole of H2O?
Answer:
1.806 x 10^24 atoms total
Explanation:
How many ml are in 3,764liters?
Hint: ‘mili’ means a thousandth (1/1,000)
Round your answer to the nearest whole number
Answer:
Your answer I think would be 3,764,000 .If Im wrong please correct me and comment below.
I got my answer by converting 3,764 liters to millileters using a converter calculator
then I rounded it to the nearest whole number using the rounding calculator from calculator soup. This has worked for me in the past.
Hope this helps, good luck!
Mass is a measure of how much matter something has.
False
True
Answer:
true
Explanation:
PLEASE ANSWER ASAP!!!!! 50 points! :
You have an aquarium with a volume of 100 liters. The tank is generally used to hold water. This tank, however, is filled with fine sand. You also have measuring spoons, the smallest of which holds a volume of 1 milliliter. How can you use one or more measuring spoons to count the grains of sand in the aquarium? Write your ideas for counting the sand grains using the measuring spoon. Decide if the idea would lead to an exact count or an estimate. Suggest how you could improve your ideas. What assumptions are necessary for your procedure for counting sand grains to be reasonable? Explain your reasoning. How does your method of counting a large volume of sand grains compare to the task of counting atoms in a sample of matter?
Answer:
first, find the density of sand grains by using a small weighing scale. put at least 10 measuring spoons of sand on the scale. calculate the density by its formula d = m/v. this result can count the volume whole sand grains based on its weights
You can count the grains of sand ( estimated value ) by ; determining an estimate of the density and mass of the sand grains in the aquarium.
Since the volume of the tank = volume of the sand therefore the volume of the sand grains in the aquarium will be 100 liters, next is to determine the mass of the sand grains by using a weighing scale to take the mass of at least 20 measuring spoons of sand.
Find the density of the sand grains using the formula for determining, Density = mass / volume . with this result, We can determine an estimate of the number of sand grains with results gotten from the density and mass of the sand grains
To determine the number of atoms in a sample matter we also determine the mass and density of the matter just as with the counting of sand grains in the tank. which we can then use to determine an estimate of the number of atoms contained in the matter.
Hence we can conclude that you can count the grains of sand ( estimated value ) by; determining the density and mass of the sand grains in the aquarium.
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which of the following does NOT cause the
urban heat island effect
Answer:
what are the options?
Explanation:
In an ecosystem the urban heat island effect is caused by construction of tall buildings and concrete roads.
What is an ecosystem?Ecosystem is defined as a system which consists of all living organisms and the physical components with which the living beings interact. The abiotic and biotic components are linked to each other through nutrient cycles and flow of energy.
Energy enters the system through the process of photosynthesis .Animals play an important role in transfer of energy as they feed on each other.As a result of this transfer of matter and energy takes place through the system .Living organisms also influence the quantity of biomass present.By decomposition of dead plants and animals by microbes nutrients are released back in to the soil.
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Explain how the connotations of the bolded words in each sentence impact the meaning being conveyed.
Answer:
Find the explanation below.
Explanation:
Sentence A: In sentence A, the bolded words create a positive undertone to the entire meaning of the text. Words such as unimaginable accomplishment, stunning, and fascinated produce a pleasing and heartening mood. They make it clearer to the reader that this action by the scientists elicited a favorable response from the viewers.
Sentence B: In sentence B, there is a negative undertone to the text. The use of descriptors such as shocking, recklessly, alarmed, tells the reader of the unfavorable response the action of the scientists produced in the viewers. A gloomy mood is thus created.
How many grams are there in 7.40 moles of AgNO3?
Answer:
1257.03 grams
Explanation:
mass=mole*molar mass
mass=7.4*169.87= 1257.03
A rocket travels in a straight line at a speed of 5,000 m/s. After 60 seconds, it is 10,000 m/s. What is the rocket’s acceleration?
Answer:
83.33 m/s^2
Explanation:
Acceleration is defined as the rate of change of velocity.
So if we know that at the beginning an object has a velocity V1.
And after a time T, the object has a velocity V2, then the average acceleration in that time interval can be calculated as:
A = (V2 - V1)/T
In this case, we know that the initial speed was 5,000 m/s
And after a time of 60 s, the velocity is 10,000 m/s
Then we have:
V1 = 5,000 m/s
T = 60s
V2 = 10,000 m/s
Then the average acceleration is:
A = (10,000 m/s - 5,000 m/s)/60s = 83.33 m/s^2
If you start with 30.0 grams of sodium fluoride, how many grams of magnesium fluoride will be produced?
Answer:
22.2 g of MgF₂
Explanation:
We star from the reaction:
NaF → sodium fluoride
Mg → Magnesium
2NaF + Mg → MgF₂ + 2Na
2 moles of sodium fluoride react to 1 mol of Mg in order to produce 1 mol of magnesium fluoride and 2 moles of sodium.
We convert mass of the reactant to moles:
30 g . 1mol / 41.98 g = 0.715 mol
We assume that Mg is in excess
As ratio is 2:1, if we have 0.715 moles of NaF we may produce the half of moles, of MgF₂
0.715 mol /2 = 0.357 moles of MgF₂
We convert moles to mass: 0.357 mol . 62.30g /mol = 22.2 g
Vhat is thermal energy?
the average overall volume of a system
the total number of molecules in a system
the kinetic energy of particles in a system
the measure of temperature in a system
SEP Analyze Data Look at the phase diagram. What is the state of matter for methanol at a temperature of −0.1°C and a pressure of 2.5 atm?
The limiting reactant is...
A). The reactant that produces the least amount of product
or B). The reactant that produces the most amount of product
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Answer:
A.) produces the least amount of product.
what are some non living factors that you need in a habitat?
Answer:
You depend on each other and need the nonliving things in your home, like food, water, air, and furniture. Living things need nonliving things to survive. Without food, water, and air, living things die. Sunlight, shelter, and soil are also important for living things.
Explanation: i dunno if this is right or not ;-; but i tried UnU
Which of these elements would form an ion with a charge of -1?
Group of answer choices
K
C
F
Answer:
k
Explanation:
that is shide rong and shide right
That big lorry hit the new car.change to passive voice
i need help on this question
NO LINKS!
Answer:
2 experimental
Explanation: