Answers
Answer:
I'm not an expert at this, but I assume its mercury.
Related Questions
How many Cl atoms are present in 307.62 grams of ccl4?
Answers
Answer: atomic mass of cl = 35.5 amu.
molar mass of ccl4 = (12) +4 (35.5)
= 12 + 142
= 154 amu.
mass of ccl4 = 385 g
no. of moles present = 385 / 154 = 2.5 mole
so, 2.5 mole of ccl4 is present in 385 grams .
Explanation:
In chemistry, the formula weight is a quantity computed by multiplying the atomic weight (in atomic mass units) of each element in a chemical formula by the number of atoms of that element present in the formula, then adding all of these products together.
Using the chemical formula of the compound and the periodic table of elements, we can add up the atomic weights and calculate molecular weight of the substance.
If the formula used in calculating molar mass is the molecular formula, the formula weight computed is the molecular weight. The percentage by weight of any atom or group of atoms in a compound can be computed by dividing the total weight of the atom (or group of atoms) in the formula by the formula weight and multiplying by 100.
The atomic weights used on this site come from NIST, the National Institute of Standards and Technology. We use the most common isotopes. This is how to calculate molar mass (average molecular weight), which is based on isotropically weighted averages. This is not the same as molecular mass, which is the mass of a single molecule of well-defined isotopes. For bulk stoichiometric calculations, we are usually determining molar mass, which may also be called standard atomic weight or average atomic mass.
A common request on this site is to convert grams to moles. To complete this calculation, you have to know what substance you are trying to convert. The reason is that the molar mass of the substance affects the conversion. This site explains how to find molar mass.
Formula weights are especially useful in determining the relative weights of reagents and products in a chemical reaction. These relative weights computed from the chemical equation are sometimes called equation weights.
Finding molar mass starts with units of grams per mole (g/mol). When calculating molecular weight of a chemical compound, it tells us how many grams are in one mole of that substance. The formula weight is simply the weight in atomic mass
The object in this photo belongs to which major part of the Earth system?
O A. Hydrosphere
O B. Biosphere
O C. Atmosphere
O D. Geosphere
Answers
Answer:
B
Explanation:
Answer: B the biosphere it is a animal and a living thing
Explanation:
Please help me it due to at 6:00pm will mark the brainiest and more points please help me really need help please
Answers
Answer:
The 3rd Law
Explanation:
The rockets burns fuel, pushing down onto the ground which then creates equal force pushing it up.
Answer:
the answer is newtons 3rd law of motion (number 3)
Explanation:
.
What is the Kc and Kp of
P4(s)+6Cl2(g) = 4PCla-
Answers
Answer:
dfbdbdfbfd
Explanation:
regergfdbffg
In an atom, electrons:
A. Are located in the nucleus
B. Sitting still on the edge of an energy level
C. Moving around the outside of the nucleus
D. Paired with a neutron
Answers
Answer:
C
Explanation:
Answer: c
Explanation:
give brainlest
12. When filling a set of orbitals of equal energy which of the following is true?
Answers
Missing options
a. There are no sets of orbitals of equal energy
b. Two electrons will occupy the same orbital rather than separate orbitals
c. Two electrons will occupy different orbitals and have opposing spins.
d. Two electrons will occupy different orbitals and have like spins
Answer:
d. Two electrons will occupy different orbitals and have like spins
Explanation:
When the orbitals are degenerate ( equal energy) pairing does not start until each orbital in a particular subshell gets one electron each. After that pairing start. This is the basis of Hund's rule of maximum multiplicity.
When the electrons have occupied different orbitals in the same subshell their spin remains same, because opposite spin electrons exist in the same orbitals. and this pattern continues in the second, so the electron in the second orbital will resemble to that of the first orbital electron
Did the transformed plant grow into a healthy mature plant?
If not, you may have chosen a bad callus. (Click Back to try a different callus.)
Answers
Answer:
yeh if we transfer to a suitable place and transferm by not harming it then it will be a healthy mature plant . We should just replace it in right time,place and weather .
Please help me it’s due today at 6:00pm will mark the brainiest and more points please help me
Answers
Answer:
C.
Explanation:
The same amount of force reacts to you
You have 85.63 g of CO2, how many molecules of CO2 are in that
container?
Ans:
______X 1024 molecules of CO2
Answers
Explanation:
1.17×10^24 molecules of co2
Kevin was carrying out the following steps as part of an experiment.
What was the topic of this experiment?
A. The water cycle
B. The circulation of global winds
C. The formation of ocean currents
D. The formation of a hurricane over water
Answers
Answer: Its (c)
Explanation: Hope this helps!!
Will MARK U AS BRAINLIEST IF U GIVE RIGHT ANSWER
Answers
Answer:
C
Explanation:
Which combination will produce a precipitate?
A) Naf (aq) and HCl (aq)
B) KOH (aq) and Mg(NO3)2 (aq)
C) NaOH (aq) and HCI (aq)
D) NaC2H302 (aq) and HCl (aq)
E) AgNO3(aq) and Ca(C2H302)2 (aq)
Answers
Answer: B
Explanation:
All acetates are soluble...
All halides are soluble EXCEPT for those of
A
g
X
,
H
g
2
X
2
,
and
,
P
b
X
2
...
All salts of the alkali metals are soluble....
All hydroxides are INSOLUBLE except for those of the alkali metals...
For
option c
we are likely to observe a fine precipitate
How many moles of CO2 are present in 14.6 L of CO2 gas at STP
Answers
Answer:
0.65mole of CO₂
Explanation:
Given parameters:
Volume of CO₂ = 14.6L
Unknown:
Number of moles of CO₂ = ?
Solution:
To solve this problem, we must understand that a mole of a gas occupies a volume of 22.4L at STP;
1 mole of gas occupies 22.4L of volume at STP;
y mole of CO₂ will occupy 14.6L of volume at STP
22.4y = 14.6
y = [tex]\frac{14.6}{22.4}[/tex] = 0.65mole of CO₂
How many molecules are in 200g of water?
Answers
Answer: 6.6855 × 1024 Molecules.
Explanation:
Why do you have to have set amounts of compounds
Answers
Answer:
compounds, on the other hands can have their bonds broken with practical amounts of energy, such as the heat from a fire. Matter can be broken down into two.
What is the ability to do work defined as?
OA. pressure
OB. energy
Ос.
force
OD
temperature
R
Answers
Answer:
It would be B
Explanation:
BRAINLIEST TO CORRECT FASTTT
3. Which of the following atoms would have the highest first ionization energy?
a. Li
b. Be
c. Na
d. Mg
4. What is the name of the phenomenon in which electrons are ejected from the surface of a metal when light shines on the metal?
a. Photoelectric effect
b. Diffraction
c. Quantization
d. Aufbau principle
10. How many core electrons does this element have? 1s2 2s2 2p5
a. 9
b. 4
c. 2
d. 5
11. The electron configuration for a chlorine atom is: 1s2 2s2 2p6 3s2 3p5. What electron configuration represents the electrons that make up only the valence electrons for a chlorine atom?
a. 1s^2 2s^2 2p^6
b. 3s^2 3p^5
c. 1s^2
d. 1s^2 2s^2 2p^6 3s^2
Answers
Answer:
3. d. Mg 4. a. Photoelectric effect 10. c. 2 11. b. 3s^2 3p^5
Explanation:
HELP WILL GIVE BRAINLEIST AND THIS ALOT OF POINTS
The table below compares wildlife supported by two plants growing around a lakeside ecosystem in South Florida.
Plant Species and Wildlife Data
Plant Species Wildlife Supported
Sawgrass Alligators, Snails
Melaleuca None
After a 25-year period, 95% of the ecosystem was covered by melaleuca. What would be the likely impact of this on the wildlife population?
Decreases, as shelter is a limiting factor
Increases, as shelter is a limiting factor
Decreases, as water is a limiting factor
Increases, as water is a limiting factor
Answers
Answer:
decreases
Explanation: decreases,as shelter is a limiting factor becasue the trees for example were there home now it is covered in melaleuca
hope this helps
Answer:
a should be the correct answer
Explanation:
there will not be many shelters that suit some animals needs
Please I’m skipping math and Ela for this help
Answers
Answer:
c
Explanation:
because it is c ok ????????????
How many hydroxide ions are bonded to each aluminum ion?
Answers
Answer:
3
Explanation:
edge 2020
There are 3 hydroxide ions bonded to each aluminum ion.
Aluminum belongs to the 13th group of the periodic table. It has 13 electrons in the orbitals. According to the electron distribution rule, there are 3 valence electrons in the aluminum ion.
In the molecule of hydroxide, the oxygen has 5 valence electrons capable of the formation of the double bond. The bonding of the hydroxide ion with the aluminum ion will complete the octet of Aluminum and oxygen by the formation of the double bond.
So Aluminum can form 3 bonds with hydroxide ions. 2 double contributing to 4 electrons and 1 single bond completing the octet of Aluminum.
Thus Aluminum can form 3 bonds with hydroxide ions.
For more information about aluminum, refer the link:
https://brainly.com/question/15197958?referrer=searchResults
Select the correct electron configuration for Cu (Z = 29) Answer a. [Ar]4s13d10 b. [Ar]4s24p63d3 c. [Ar]4s23d0 d. [Ar]4s24d9 e. [Ar]5s24d9
Answers
Answer:
a. [Ar]4s13d10.
Explanation:
Hello!
In this case, since the electron configuration allows us to arrange the electrons moving around the atom of an element and equal the atomic number, we can write the electron configuration of copper as shown below:
[tex]Cu^{29}=1s^2,2s^2,2p^6,3s^2,3p^6,4s^2,3d^9[/tex]
However, in terms of the argon's electron configuration, which is:
[tex]Ar^{18}=1s^2,2s^2,2p^6,3s^2,3p^6[/tex]
We infer that the electron configuration of copper in terms of that of argon's is:
[tex]Cu^{29}=[Ar]4s^2,3d^9[/tex]
Therefore, the answer is a. [Ar]4s13d10 because the 4s² can be written as 4s¹ and therefore the 3d⁹ is changed to 3d¹⁰.
Best regards!
True or false: if you decrease the force on an object, its acceleration increases.
Answers
Answer:
I believe the answer is false. Acceleration increases when force is increased.
Explanation:
Calculate the concentration of the resulting sodium oxalate solution if 0.1005 g of Na2C2O4 was used.
Answers
Answer:
0.00500M of Na₂C₂O₄
Explanation:
When are dissolved in 150 mL of 1.0 M H2SO4.
We can solve this problem finding molarity of sodium oxalate: That is, moles of Na2C2O4 per liter of solution. Thus, we need to convert the 0.1005g to moles using molar mass of sodium oxalate (134g/mol) and dividing in the 0.150L of the solution:
0.1005g * (1mol / 134g) = 7.5x10⁻⁴ moles of Na₂C₂O₄
In 0.150L:
7.5x10⁻⁴ moles of Na₂C₂O₄ / 0.150L =
0.00500M of Na₂C₂O₄The concentration of the solution is 0.005 M.
From the information available in the question;
We know that;
Mass of Na2C2O4 = 0.1005 g
Volume of solution = 150 ml
To obtain the number of moles of Na2C2O4;
Number of moles = mass/molar mass
Molar mass of Na2C2O4 = 134 g/mol
Number of moles = 0.1005 g /134 g/mol = 0.00075 moles
Concentration = number of moles/volume
Volume of solution = 150ml or 0.15 L
Concentration = 0.00075 moles/0.15 L
= 0.005 M
Learn more: https://brainly.com/question/6505878
Missing parts
An acidic solution of sodium oxalate (Na2C2O4) was prepared by dissolving ~0.100 g of Na2C2O4 in 150 mL of 1.0 M H2SO4 in a 250 mL Erlenmeyer flask. Calculate the concentration of the resulting sodium oxalate solution if 0.1005 g of Na2C2O4 was used.
Describe how you could use the scientific method to develop the best time schedule for the nights your volleyball team has games.
Answers
Answer: In theory, the scientific method can be used to answer virtually any question imaginable. The scientific method is a consistent approach to acquiring knowledge that begins with a question and then uses a combination of research, testing and analysis to arrive at the answer to the question.
What is the proper way of collection, preservation and transition of hair?
Answers
The Diagram Shows The Box For An Element In The Periodic Table What Is The Atomic Mass Of The Element Shown?
A. 32.1
B. 48.1
C. 38
D. 16
Answers
Answer:
b
Explanation:
The single most effective agent of chemical weathering at Earth's surface is _________
Answers
Answer:
Water.
Explanation:
Water is the most important agent of chemical weathering. Two other important agents of chemical weathering are carbon dioxide and oxygen.
GIVING BRAINLIST ASAP
As the ice melts into liquid water, what happens to the kinetic energy of the particles in the sample?
Answers
Answer:
Increases
Explanation:
As ice melts into liquid water, the kinetic energy of the particles increases.
This is because to melt ices, heat energy is supplied.
The sum total of all the average speed of the particles in a substance is the heat energy. Heat is a form of kinetic energy. As more heat is added, the particles moves rapidly and the kinetic energy increase.How many standard amino acids are there in the human body?
What is the least number of peptides in a polypeptide?
Answers
Answer:
-Theres 20 amino acids in the human body
-The least number of amino acids in a polypeptide are 10
Explanation:
solution of nitric acid is 60% with the specific gravity 1.15 calculate the volume of the seed required to prepare 250 ml semi normal solution
Answers
Answer:
This dilution problem uses the equation
M
a
V
a
=
M
b
V
b
M
a
= 6.77M - the initial molarity (concentration)
V
a
= 15.00 mL - the initial volume
M
b
= 1.50 M - the desired molarity (concentration)
V
b
= (15.00 + x mL) - the volume of the desired solution
(6.77 M) (15.00 mL) = (1.50 M)(15.00 mL + x )
101.55 M mL= 22.5 M mL + 1.50x M
101.55 M mL - 22.5 M mL = 1.50x M
79.05 M mL = 1.50 M
79.05 M mL / 1.50 M = x
52.7 mL = x
59.7 mL needs to be added to the original 15.00 mL solution in order to dilute it from 6.77 M to 1.50 M.
Explanation: