Answer:
copper
Explanation:
Copper is used as a base metal to mix with gold and to make it stronger, harder and less brittle in nature. It acts as the best alloy to make ornaments. Since the Silver layer gets easily oxidized in nature and gets easily corroded, copper remains the best choice as a metal to mix with Gold.
Hillsdale and Cordera are the same distance from the equator, and both are near the ocean. Is Cordera warmer, colder, or the same temperature as Hillsdale? Explain using wrods energy level, temperature, current
Answer:
Cordera is colder than Hillsdale.
Explanation:
They may be at a similar latitude. But you also have to consider the currents nearby the location.
The prevailing wind closer to the equator which carries warm current hits Hillsdale which is why it follows the coastline of the continent. However, for Cordera prevailing winds carrying cold currents hits the continent and follows or hits the coastline of Cordera.
The bond between which two atoms is most
polar?
(1) C-0
(3) H-O
(2) F-F
(4) N-H
TOITTI
The bond between hydrogen (H) and oxygen (O) (option 3: H-O) has the highest electronegativity difference (1.24). Therefore, the H-O bond is the most polar among the given choices.
The polarity of a chemical bond depends on the electronegativity difference between the two atoms involved. The greater the electronegativity difference, the more polar the bond.
Let's compare the given bond options:
(1) C-O: The electronegativity of carbon (C) is approximately 2.55, and the electronegativity of oxygen (O) is approximately 3.44. The electronegativity difference is 0.89.
(3) H-O: The electronegativity of hydrogen (H) is approximately 2.20, and the electronegativity of oxygen (O) is approximately 3.44. The electronegativity difference is 1.24.
(2) F-F: Fluorine (F) is the most electronegative element with an electronegativity of 3.98. Since both atoms in this case are fluorine, the electronegativity difference is 0.
(4) N-H: The electronegativity of nitrogen (N) is approximately 3.04, and the electronegativity of hydrogen (H) is approximately 2.20. The electronegativity difference is 0.84.
From the options provided, the bond between hydrogen (H) and oxygen (O) (option 3: H-O) has the highest electronegativity difference (1.24). Therefore, the H-O bond is the most polar among the given choices.
Learn more about polar bond from the link given below.
https://brainly.com/question/33647611
#SPJ2
Suppose Galileo dropped a lead ball(100 kilograms)and a glass ball(1kilogram)from the leaning tower of Pisa.Which one hit the ground first?
Answer:
If there is no air resistance then both of the objects hit the ground first.
Explanation:
which property of steel is useful for making the car body circle the correct answer
ductile magnetic
sonorous strong
What is the pH of sulfuric acid?
Explanation:
0.3,1.2, or 2.1. sorry if it's wrong.
Which of the following molecules has a nonlinear structure?
Answer:
SnCl2 is nonlinear due to the presence of lone pair of electrons on the central atom.....
How many grams of aluminum are needed to completely react with
192 g of oxygen gas?
Answer:
4.28g
Explanation:
How much volume will 8.8 moles of gas fill at 0.12 atm at 56*C
Answer:
2000 L
General Formulas and Concepts:
Atomic Structure
MolesTemperature Conversion: K = °C + 273.15Gas Laws
Ideal Gas Law: PV = nRT
P is pressureV is volume (in L)n is number of molesR is gas constantT is temperature (in K)Explanation:
Step 1: Define
[Given] 8.8 moles gas
[Given] 0.12 atm
[Given] 56 °C = 329.15 K
Step 2: Solve for V
Substitute in variables [Ideal Gas Law Formula]: [tex]\displaystyle (0.12 \ atm)V = (8.8 \ mol)(0.0821 \ \frac{L \cdot atm}{mol \cdot K})(329.15 \ K)[/tex]Isolate V: [tex]\displaystyle V = \frac{(8.8 \ mol)(0.0821 \ \frac{L \cdot atm}{mol \cdot K})(329.15 \ K)}{(0.12 \ atm)}[/tex]Multiply/Divide [Cancel out units]: [tex]\displaystyle V = 1981.7 \ L[/tex]Step 3: Check
Follow sig fig rules and round. We are given 2 sig figs.
1981.7 L ≈ 2000 L
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When 2 moles of Mg3N2 are allowed to react, how many moles of H20 also react?
Mg, Na(s) + 6H20(1)
3Mg(OH)2(s) + 2NH3(g)
1 mole
4 moles
6 moles
8 moles
12 moles
Answer:
12 moles of water (E)
Explanation:
The first step is to see that the equation is balanced. It is now, but you did something strange to the Mg3N2.
Mg3N2(s) + 6H20(l) ======> 3Mg(OH)2(s) + 2NH3(g)
What the equation is telling you is that 1 mol of Mg3N2 requires 6 moles of water for the reaction to occur.
So 2 mols of Mg3N2 would require 6*2 mols of water to react.
The answer is 12 moles of water
Which type of radiation poses the fewest safety issues?
A. Beta
B. Gamma
C. Alpha
D. X-rays
Answer:
C. Alpha
Explanation:
I did it and I got it right
Answer: C. Alpha
Explanation:
The mass of evaporating dish
[tex]\huge{\textbf{\textsf{{\color{pink}{An}}{\red{sw}}{\orange{er}} {\color{yellow}{:}}}}}[/tex]
The mas.s of evaporating dish is 21.345g B.
ThanksHope it helpsAmetal used in hot water system?
Answer:
Nichrome
Answer: Hot water system coils are commonly made up of metal alloys which are a combination of two or more elements. The most commonly used metal alloy is “Nichrome”. Nichrome is an alloy of nickel (80%) and chromium (20%).
Vibrating molecules and atoms are an example of ___________________ energy, which falls into the ______________________ energy category.
how many molecules are in 2NaO? please someone help i dont know this :')
Answer:
One molecule
Explanation
But there is three different atoms forming this one NaOH. The three atoms are Na, O and H, that is one sodium, one oxygen, and one hydrogen.
define combine gas law
Answer:
The combined gas law combines the three gas laws: Boyle's Law, Charles' Law, and Gay-Lussac's Law. It states that the ratio of the product of pressure and volume and the absolute temperature of a gas is equal to a constant. When Avogadro's law is added to the combined gas law, the ideal gas law results.
Explanation:
Hope this helps
~Bre
How many moles of H are present in 2.50 moles of benadryl?
Answer:
Explanation:
The chemical formula of Benadryl is [tex]C_{17}H_{21}NO[/tex]
1 mol of Benadryl has 17 mol of hydrogen
2.5 mol of Benadryl has 17*2.5 = 42.5 moles of hydrogen.
Mols are peculiar chemical definitions. You have to be careful what you are talking about. You are given mols of Benadryl, which is the whole molecule. Whole molecule means the Carbon Hydrogen Nitrogen and Oxygen
Each mol of Benadryl contains 17 mols of carbon, 21 moles of hydrogen, 1 mol of nitrogen and 1 mol of oxygen
Calculate the molar mass of H2SO4 + 2 NaOH = Na2SO4 + 2 H2O. Please show all work. THANK YOU!
H_2SO_4
[tex]\\ \sf\longmapsto 2(4u)+32u+4(16u)[/tex]
[tex]\\ \sf\longmapsto 8u+32u+64u[/tex]
[tex]\\ \sf\longmapsto 104u[/tex]
[tex]\\ \sf\longmapsto 104g/mol[/tex]
NaOH[tex]\\ \sf\longmapsto 23u+16u+1u[/tex]
[tex]\\ \sf\longmapsto 40u[/tex]
[tex]\\ \sf\longmapsto 40g/mol[/tex]
Na2SO4[tex]\\ \sf\longmapsto 2(23u)+32u+4(16u)[/tex]
[tex]\\ \sf\longmapsto 46u+23u+64u[/tex]
[tex]\\ \sf\longmapsto 69u+64u[/tex]
[tex]\\ \sf\longmapsto 133u[/tex]
[tex]\\ \sf\longmapsto 133g/mol[/tex]
H_2O
[tex]\\ \sf\longmapsto 2(1u)+16u[/tex]
[tex]\\ \sf\longmapsto 18u[/tex]
[tex]\\ \sf\longmapsto 18g/mol[/tex]
How does thermal energy flow as you hold a glass of ice water?
Why does the first method for determining volume work only for a regularly shaped object?
Answer:
please give me brainlist and follow
Explanation:
when using first method for regular shape and 2nd method for an irregular shape. ... It will not work because the weight is different.
How much heat will be transferred when 0.54g of sulfur reacts with 0.54g of oxygen to produce sulfur trioxide according to the following reaction:
2 S + 3 O2 =2 SO3 + 790kJ
Answer:
-4.4 kJ
Explanation:
As a rollercoaster travels upward what type of energy transfer is taking place?A.electrical to thermal energy B.kinetic to potential energy C.mechanical to chemical energy D.potential to kinetic energy
Answer:
B.
Explanation:
An electrically neutral atom has an atomic mass of 30.973 and an atomic number of 15. How many neutrons does this atom have?_______________
Answer: 16 neutrons
Explanation: The atomic number for any element is the number of protons in its atomic nuclei. In a neutral atom, the number of electrons are the same as the number of protons. The atomic mass (mass number) is the sum of the protons and neutrons in the nucleus. Mass number can vary due to the fact that the number of neutrons can vary. Isotopes are named for their mass numbers.
So, this element has 15 protons (atomic number), 15 electrons, and 16 neutrons (mass number minus atomic number).
This isotope is phosphorus-31, which has atomic number 15.
Explain how you could determine the number of moles of gas that are present in a 2L bottle that is open to the atmosphere. State what pieces of information you would need to have in order to complete the calculation, and what tools / equipment you could use in order make the measurements to gather the information. Explain how that information can then be used to determine the number of moles present in the bottle.
Answer:
it 2.0 aka b
Explanation:
HELP PLEASE ILL GIBE BRANLIEST TO WHOEVER CAN SOLVE THIS WITH NO LINKS!!!!!! If 4.00 moles of a gas at a pressure of 5.40 atmospheres have a
volume of 120 liters, what is the temperature of this gas? (R = .0821
L. atm L. atm
K mol K.
komol)
F. 190 K
G. 234 K
H. 1973 K
J. 2280 K
C.9.A-R/C.2.G-P
Answer:
Option H
Explanation:
We can get the temperature of the gas by applying ideal gas law,
PV = nRT
Here, P = Pressure of the gas
V = Volume of the gas
n = Number of moles
R = Gas constant
T = Temperature
By substituting the values in the given equation,
5.40 × 120 = 4 × 0.0821 × T
648 = 0.3284T
T = [tex]\frac{648}{0.3284}[/tex]
T = 1973.20
≈ 1973 K
Therefore, temperature of the gas is 1973 °K
Option H will be the answer.
draw the lewis structure for the molecule N2O
Answer: I found a image to lewis structure for the molecule N2O.
I think this might help you to draw a lewis structure.
Explanation:
What is the highest sublevel for the element Boron?
Answer:
2p
Explanation:
Boron is a member of group 13. The highest energy sub-level is usually found on the outermost shell of the atom of the element involved.
For a group 13 element, its outermost shell configuration is ns2 np1. The electronic configuration for boron is; 1s2 2s2 2p1.
Hence the highest energy sub-level in boron is 2p.
ASAP please
What is the molarity of HCl in aqueous solution which contains 0.220 mole of HCl in 200ml solution? a. 1.5M b. 2.82M c. 3.09M d. 1.10M
The molarity of HCl will be "1.10 M".
According to the question,
Moles of solute,
0.220 molesSolution,
200 ml or 0.2 lAs we know the formula,
→ [tex]Molarity = \frac{Moles \ of \ solute}{Liters \ of \ solution}[/tex]
By substituting the values, we get
→ [tex]= \frac{0.220}{0.2}[/tex]
→ [tex]= 1.10 \ M[/tex]
Thus the above approach i.e., "option d" is correct.
Learn more:
https://brainly.com/question/5950133
Using spdf notation, what is the electron configuration for a neutral atom of beryllium
Answer:
Beryllium
Explanation:
explain why magnesium is a better conductor of electricity than sodium
Answer:
When magnesium ions are broken off the solid lattice and go into solution, there is enough attraction between the 2+ ions and the water molecules to get co-ordinate (dative covalent) bonds formed between the magnesium ions and lone pairs on surrounding water molecules… making it more conductive than sodium.
Name the type of marked carbon