Answers
Answer:
850
Explanation:
It's between 840 and 860
Related Questions
C.5A What atom is shown below? *
8 points
19 p
20 n
Cholrine
Argon
Calcium
Potassium
Answers
Answer:
p stands for protons. You can identify the element by matching the atomic number with the number of protons.
The answer is Potassium in this case.
In the Periodic Table, which of the highlighted elements has the greatest number of protons?
A Fluorine, F
B Iron, Fe
C Calcium, Ca
D Aluminum, AI
Answers
Answer:
since the modern periodic table is made in ascending order by the atomic number fluorine has the most protons.
The highlighted element that has the greatest number of protons is Iron, Fe. Thus, the correct option for this question is B.
What do you mean by Protons?Protons may be defined as a type of subatomic particles which are generally present in the centermost part of an atom known as the nucleus along with neutrons. These subatomic particles are positively charged in nature. Ernest Rutherford was known to discover these particles.
According to the question, the number of protons is generally governed by an atomic number of a chemical element. For example, fluorine has an atomic number of 9. It has the same number of protons in its nucleus. The number of protons in Iron is 26, while the number of protons in Calcium is 20. And the number of protons in aluminum is 13.
Therefore, an iron is the highlighted element that has the greatest number of protons. Thus, the correct option for this question is B.
To learn more about Protons and atomic numbers, refer to the link:
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31. Why would a valence electron be easier to steal from a Francium atom than a Fluorine
atom? Give two reasons.
1.
2
Answers
Answer:
1. Because a Francium atom is deeper down the alkali metals, it is much easier to lose a valence electron.
2. A fluorine atom can easily gain a valence electron, but it could not easily lose a valence electron because it is one electron away from filling the outer shell
Explanation:
The answer is the explanation
calculate the volume of the gas in the balloon using the equation for volume of a sphere
Answers
Answer:
We can just use the formula for the volume of sphere which is 4/3 PI R cubed R is the radius. So if you have a balloon that's a sphere.
Explanation:
How to write the molecular equation of the following reaction. Also, identify the net ionic equation, the total ionic ecuation and the species that gets reduced and oxidized.
NaHCO3(ac) + HCl(ac)
Answers
Answer:
a. HCl + KOH
b. HCHO₂ + LiOH
Only the first H in HCHO₂ is acidic
c. N₂H₄ + HCl
Both N atoms in N₂H₄ are basic, so the compound reacts with 2 mol of HCl.
Explanation:
Under what circumstances may a health insurer charge a higher premium to a woman with a genetic disposition to breast cancer? a) Her mother has breast cancer but she doesn't. O b) She has breast cancer. c) Her sister has breast cancer but she doesn't. d) Health insurers can never discriminate based on genetic information in this way.
Answers
Answer:
D
Explanation:
No company is allowed to discriminate.
How many grams of O are in 705 g of N2O ?
mass:
g
Answers
Answer:
O are in 535 g of N2O
Explanation:
What benefits does the food industry gets from catalysts?
Answers
hope this helps! Let me know if you have any questions! Good luck on the rest of your assessment!
Mark this as Brainliest if you get a chance:)
Explain how a density current might form in the Arctic Ocean
Answers
they are caused by winds and changes in seawater density.
Consider the following reactions:
3 Ni 2+(aq) + 2Cr(OH)3 (s) + 10 OH –(aq) → 3 Ni (s) + 2 CrO4 –2 (aq) + 8 H2O (l)
A) What is the value for n for this reactions?
B) Calculate the standard Gibbs Free-Energy
C) How long does it take a current of 5 A to deposit 95 g of nickel?
Answers
For the reaction
3 Ni2+(aq) + 2 Cr(OH)3(s) + 10 OH- (aq) → 3 Ni(s) + 2 CrO42-(aq) + 8 H2O(l) G = +87 kJ/mol
Given:
(Ni2+(aq) + 2 e- → Ni(s)) x 3 Ered = -0.28 V
(CrO42-(aq) + 4 H2O(l) + 3 e- → Cr(OH)3(s) + 5 OH-(aq)) x 2
_____________________________________________________________________________________
3 Ni2+(aq) + 6 e- → 3 Ni(s)
2 CrO42-(aq) + 8 H2O(l) + 6 e- → 2 Cr(OH)3(s) + 10 OH-(aq)
2. Calculate the number of moles of NaOH needed to make 300 mL of 6 M solution?
Answers
Answer:
1.8 mol
Explanation:
concentration (M) = no. of moles (mol) ÷ volume (dm³)
no. of moles = concentration × volume
= 6 × 300 / 1000
= 1.8 mol
what would be the best way to determine the amount of AgNO3 in the dissolved solution? Justify your answer
Answers
The best way to determine the concentration of AgNO3 dissolved in solution is by precipitation using a chloride.
Precipitation is one of the oldest and handy methods of chemical analysis. It involves the addition of a reagent which is known to form a precipitate with the test solution.
The precipitate is now recovered from solution, dried and weighed. Stoichiometric calculations show the amount of the test substance dissolved in the test solution.
In this case, NaCl can be used to carry out a precipitation as follows;
AgNO3(aq) + NaCl(aq) -------> AgCl(s) + NaNO3(aq)
The AgCl precipitate is recovered dried and weighed and then the amount of AgNO3 in the dissolved solution is determined.
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can u help me with this i confused with this
Answers
Answer:
your creating a animal/creature
Explanation:
a human is a mammal we grow use energy reproduce and change our clothes to respond to our surroundings
answer 3 questions. screenshot
Answers
What state of matter is foam?
Answers
Answer:
Foam is not a state of matter, it is a mixture of two states: gas and (usually) liquid. There are also gas-solid foams.Explanation:
Answer:
Foam is not a state of matter, it is a mixture of two states: gas and (usually) liquid.
Explanation:
white sugar and iodized salt did the resulting look same throughout?
Answers
Because White sugar settles at the bottom of iodized salt. White sugar completely mixed with iodized salt.
The pKa of formic acid is 3.75. At pH of 5.00, _______ .
a) [formate] < [formic acid]
b) [formate] > [formic acid]
c) Insufficient information to be determined.
d) [formate] = [formic acid]
Answers
The pKa of formic acid is 3.75. At pH of 5.00, b) [formate] > [formic acid].
Formic acid is a weak acid. Thus, together with its conjugate base (formate) they form a buffer system. We can calculate the pH of a buffer system using Henderson-Hasselbach's equation.
[tex]pH = pKa + log \frac{[formate]}{[formic\ acid]} \\\\5.00 = 3.75 + log \frac{[formate]}{[formic\ acid]}\\\\\frac{[formate]}{[formic\ acid]} = 17.8[/tex]
As expected, at a pH above the pKa, the concentration of formate is higher than that of the formic acid.
The pKa of formic acid is 3.75. At pH of 5.00, b) [formate] > [formic acid].
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Atomic Theory questions. Will be worth 50 points.
Answers
Answer:
1. Option C
2. Option D
3. Option B
4. Option
5. Option
6. Option
7. Option
2. D
3. B
4. A
5. B
6. A
7. B
8. D
9. D
10. A
11. A
12. C
13. B
(i think uhhh)
Which part of the pencil is conductors?
A. The metal and point
B. The eraser and point
C. The wood and eraser
D. the wood and metal
Answers
Answer:
A. The metal and point
Explanation:
Elements that can conduct electric current are generally metals. However, the nonmetal carbon in the form of graphite is a good conductor of electricity.
help please thank you!!!!
Answers
Answer:
I think the coefficient is 4
please someone help me Balance this equation.
K2CrO7 + H2SO4 + 2C2H5OH = 3CH3COOH + 2K2SO4 + 4H2O + 2Cr2(SO4)3.
Answers
Answer: This is an oxidation-reduction (redox) reaction:
3 C-II - 12 e- → 3 CII (oxidation)
4 CrVI + 12 e- → 4 CrIII (reduction)
C2H5OH is a reducing agent, K2Cr2O7 is an oxidizing agent.
What structure
do plant cells have during
cytokinesis that animal cells
do not have?
Answers
Answer: See Explanation
Explanation:
Cytokinesis occurs in mitosis and meiosis for both plant and animal cells. The ultimate objective is to divide the parent cell into daughter cells.
In plants , this occurs when a cell wall forms in between the daughter cells.
In animals , this occurs when a cleavage furrow forms. This pinches the cell in half.
Which of the following are uses for radiation? Check all that apply.
O A. Food preservation
B. Energy production
C. Medical applications
D. Dating artifacts
(I have a feeling it’s b and c but I want to double check )
Answers
Answer:
b and c
Explanation:
b nuclear energy and d is radiology dating if I am correct
What evidence supports the theory of continental drift? Select three.
Question 10 options:
Fossils of plants and animals
Distinctive rock layers and mountain ranges
Glacial scratches on rocks
Volcanic activity along the Ring of Fire
Answers
Answer:
fossils of plants and animals
distinctive rock layers and mountain ranges
Glacial scratches on rocks
Explanation: I took the quiz lol
what if two objects have the same mass but different sizes which is denser? expain
Answers
Answer:
Imagine you have 5 marbles in your hand and 5 marbles spread in front of you on the floor. Each group has the same mass, but one is contained in a smaller space. The marbles in your hand would be denser because there is more "stuff" in a smaller space.
Explanation:
Which option correctly shows the concentration of H3O+ ions in pure water?
7 mol/L
1.0 × 10-7 mol/L
1.0 x 10-14 mol/L
14 mol/L
Answers
Answer:
C 1.0 x 10-14 mol/L
Explanation:
also do you do connections academy?
Answer question based on the periodic table entry for bromine.
How many protons does bromine have?
a. 35
b. 36
c. 45
d. 80
Answers
There are 6.02 x 10 ^ 23 atoms of carbon per 12 grams. How many atoms of carbon per pound are there?
Answers
Considering the change of units, there are 2.27×10²⁵ atoms of carbon per pound.
You know that there are 6.02x 10²³ atoms of carbon per 12 grams.
On the other hand, you must make a change of units. For that you must know that 1 gram equals 0.00220462 pounds. Then you can apply the following rule of three: if 1 gram is equal to 0.00220462 pounds, 12 grams is equal to how many pounds?
[tex]mass=\frac{12 gramsx0.00220462 pounds}{1 gram}[/tex]
mass= 0.0264555 pounds
12 grams equals 0.0264555 pounds. So if 12 grams contains 6.02x 10²³ atoms, 0.0264555 pounds contains that many moles. Then you can apply the following rule of three: if 0.0264555 pounds contains 6.02x 10²³ atoms, does 1 pound contain how many atoms?
[tex]amount of atoms=\frac{1 poundx6.02x10^{23} atoms}{0.0264555 pounds}[/tex]
amount of atoms= 2.27×10²⁵ atoms
Finally, there are 2.27×10²⁵ atoms of carbon per pound.
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https://brainly.com/question/17353696?referrer=searchResultsHow many ML of 0.44 M HCl are needed to dissolve 9.83 g of BaCO3
Answers
Answer:
nBACO3=m/M=9,83/197=0,05(mol) ->nHCl=0,05.2/1=0,1(mol) =>VHCl=n/CM=0,1/0,44=0,227(lít)
Explanation:
can you describe a carbon atoms for me please
thank you