Identify three elements that form only one CATION.
Answer:
hyrogen,Lithium,beryllium
Nicole pushes her bike up a hill. Overhead, the sun exerts a gravitational force on Earth. Which statement is true about the bike and Earth?
They both experience contact forces.
They both experience non-contact forces.
The bike experiences a non-contact force and Earth experiences a contact force.
The bike experiences a contact force and Earth experiences a non-contact force.
Answer: c
Explanation:
Which solution has the greatest number of hydrogen ions? blood, pH = 7. 2 lemon juice, pH = 2 soda, pH = 3. 5 bleach, pH = 13. 5.
Answer:
pH=2 soda
Explanation:
There are more H+ ions in more acidic (lower on the pH scale) solutions. There are more H3O+ ions in more basic (higher on the pH scale) solutions.
Hope this helps!
Answer:
b. lemon juice pH=2
Explanation:
Help this is so confusing like
Answer: which of the following is qualitative?
A. 100-calorie apple
B. 1-liter soda
C. triangular crystal
D. 10-inch brick
answer is D
Explanation:
calculate the mass of butane needed to produce 64.1 g of carbon dioxide to three significant figures and appropriate units
Answer:
21.2 gm
Explanation:
calculate the mass of butane needed to produce 64.1 g of carbon dioxide to three significant figures and appropriate units
butane is the hydrocarbon C4H10
in combustion, we react hydrocarbons with O2 to form CO2 and H2O
so
C4H10 + O2----------------> CO2 + H2O
BALANCE
2C4H10 + 1302--------> 8CO2 + 10 H2O
the molar mass of CO2 is 12 + 16X2 = 44
64.1 gm of CO2 is
64.1/44 = 1.46 MOLES OF CO2,
FOR EVERY 8 MOLES OF CO2 WE NEED 2 MOLES OF BUTANE IT IS A
8:2 OR 4:1 RATIO. THE MOLES OF C4H10 ARE 1/4 THE MOLES OF CO2
SO
THE MOLES OF C4H10 H10 ARE 1.46/4 =0.365 MOLES
THE MOLAR MASS OF BUTANE IS 58.12
0.365 MOLES OF C4H10 HAS A MASS OF 0.365 X 58.12 = 21.2 gm
In the formula
1N2 +3H2 → 2NH3 + 1H2
1 diatomic nitrogen (1N2) and 3 diatomic hydrogen (3H2) produce 2 ammonia (2NH3) with 1 diatomic hydrogen (1H2) left over. How can you change the formula so no diatomic hydrogen (H2) is left over?
(1 point)
Remove a H2 molecule from the left side of the equation.
Remove a cap h sub 2 molecule from the left side of the equation.
Remove a NH3 molecule from the right side of the equation.
Remove a cap n cap h sub 3 molecule from the right side of the equation.
There is nothing that can be done to use the leftover molecules.
There is nothing that can be done to use the leftover molecules.
Add another N2 molecule to the left side of the equation.
Answer: remove a H2 molecule from the left side of the equation
Explanation:
In the chemical equation and concept of balancing of equations if to ensure that no diatomic hydrogen is left over remove a H₂ molecule from the left side of the equation.
What is chemical equation?Chemical equation is a symbolic representation of a chemical reaction which is written in the form of symbols and chemical formulas.The reactants are present on the left hand side while the products are present on the right hand side.
A plus sign is present between reactants and products if they are more than one in any case and an arrow is present pointing towards the product side which indicates the direction of the reaction .There are coefficients present next to the chemical symbols and formulas .
The first chemical equation was put forth by Jean Beguin in 1615.By making use of chemical equations the direction of reaction ,state of reactants and products can be stated. In the chemical equations even the temperature to be maintained and catalyst can be mentioned.
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how many grams of co are needed to react with fe2o3?
Answer:
419 grams of CO are needed.
Explanation:
BRAINLIEST TO CORRECT ANSWER
Answer:
A right? I'm pretty sure it's A
. Identify molecules of elements;
O2, NH3, He
Elements can be made of one atom, like He, or be elemental molecules, such as hydrogen (H2), oxygen (O2), chlorine (Cl2), ozone (O3), and sulfur (S8). Atoms are not drawn to scale. Some elements are monatomic, meaning they are made of a single (mon-) atom (-atomic) in their molecular form...
write the steps you would use for making tea. use the words solution, solvent, dissolve, soluble, insoluble, filtrate and Residue.
[tex] \large \text{Answer} \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ [/tex]
take a few cups of water in a pan and and heat it on a gas burner . the hot water , add some dark brown mixture . then add sugar and milk. sugar is a solute which dissolves in hot water to form a solution . after boiling put some more time , mixture is filtered through a tea - strainer . the prepared tea passes through the tiny holes of the tea - strainer and collects as of filtrate in the cup placed below. the used tea - leaves , being isoluble , collect as a Residue in the the tea - strainer .
〽hope it helps you ✅
state saytzeff's rule
Answer:
The more substituted alkene will be the major product.
Explanation:
A 16.0 L container at 333 K holds a mixture of two gases with a total pressure of 7 atm. If there are 2.72 mol of Gas A in the mixture, how many moles of Gas B are present?
A flower vase placed on the table
Explanation:
A laborer pushing a crate on the table
A 16.0 L container at 333 K holds a mixture of two gases with a total pressure of 7 atm. If there are 2.72 mol of Gas A in the mixture, no. of moles of Gas B are 1.376.
What is combined gas law?The combined gas law is the law of of gaseous state which is made by combination of Boyle's law, Charle's law, Avogadro's law and Gay Lussac's law.
It is a mathematical expression that relates Pressure, Volume and Temperature.
(P1 × V1)÷T1 = (P2 × V2)÷T2
We can also use the following relation-
PV = nRT
Let n be the total no. of moles.
Given,
P = 7 atm
R = 0.0821
T = 333K
V = 16 L
n = PV / RT
n = 4.096
n = no. of moles of A gas + no. of moles of gas B
4.096 = 2.72 + x
x = 1.376
Therefore, A 16.0 L container at 333 K holds a mixture of two gases with a total pressure of 7 atm. If there are 2.72 mol of Gas A in the mixture, no. of moles of Gas B are 1.376.
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Choose the incorrect statement from the following:
(a) The disadvantage of natural gas is that it can not be used directly for burning in homes.
(b) Natural gas is stored under high pressure as compressed natural gas.
(c) Natural gas cannot be used for power generation.
(d) It is difficult to transport natural gas through pipes.
Answer:
d
Explanation:
Generally, it is transported through pipes so I think statement d is incorrect.
3. What type of gas do plants take in?
oxygen
carbon dioxide
Answer:
Archaeology is the study of the human past using material remains. These remains can be any objects that people created, modified, or used.
Explanation:
C3H4(g) + xO2(g) → 3C02(g) + 2H2O(g)
-
What is the value of the coefficient x in this
equation?
Answer:
4
Explanation:
atoms of O2 in the product side:
(3×2)+(2×1)=8
so to balance it:
x × 2 =8
x=4
A reaction between an acid and a base produced lithium chloride (LiCl). What acid and base combination could produce this salt?
A. sulfuric acid and lithium hydroxide
B. hydrochloric acid and lithium hydroxide
C. sulfuric acid and magnesium hydroxide
D. hydrochloric acid and magnesium hydroxide
Answer:
B. hydrochloric acid and lithium hydroxide
Explanation:
Answer:
thank you!
the answer is B) hydrochloric acid and lithium hydroxide.
Explanation:
have a rest of your day.
I WILL MARK BRAINLY-EST Do you think the way we perceive food in our culture supports the guidelines in MyPlate? Explain your
answer
diagram of a separate funnel
Answer:
Separation techniques
Separating Funnel - Separation techniques
Explanation:
if you look this up this should help i think
Is the partial pressure of o2 higher in water or the air?
An Oxygen atom Isotope has an overall charge of -1. How many electrons does it have?
Answer:
8 electrons.
Explanation:
How much heat is required for 10 g of steam specific heat
capacity = 2.01 J/gºC) at 120°C to be heated to 160°C?
Answer:
145°C is allowed
Explanation:
step step by step explanation
describe the motion and arrangement of particles in a solid, a liquid, and a gas.
Answer:
gas vibrate and move freely at high speeds. liquid vibrate, move about, and slide past each other. solid vibrate (jiggle) but generally do not move from place to place.
Hopefully this helped!
What is a plan in science for a 6 QWC question?
Answer:
the plan is:
Explanation:
Why must you continue to increase the temperature as you perform distillation ?
Answer:
It is possible to separate several distinct compounds according to their varying volatilities by altering the temperature of the distillation process. A nonvolatile solute, on the other hand, will always remain in the solution if you have a nonvolatile solute in your solution.
Explanation:
Hope it helps:)
Answer:
The reason for this is that the composition of the vapor that is distilling varies continuously during the distillation
An atom has a charge of 1+. If the atom's nucleus contains 23 protons, the atom must have
A
25 electrons.
В.
23 electrons.
с.
22 electrons.
D.
24 electrons.
Howler and warnibers is answer
Answer:
22 electrons
Explanation:
correct answer correct answer correct answer
Someone pls help I have no clue what I’m doing
How many atoms of each element are in the compound AgNO3? (Hint: Ag is the
symbol for silver, N is the symbol for nitrogen, and O is the symbol for oxygen.)
1 silver, 1 nitrogen and 3 oxygen
Subscripts show the number of atoms of each element in a compound
There is no subscript after Ag which shows there is only one silver atom. There is no subscript after N which shows there is only one nitrogen atom. However, there is a 3 in the subscript after O which shows there are 3 oxygen atoms
kinetic energy increases as velocity ___
Answer:
square of it's speed
Explanation:
Answer:
kinetic energy increases as the square of its speed.
Rock candy is composed of large sugar crystals, which are made of sugar molecules. Growing the crystals in water with food dyes makes colored crystals. A friend has a plan to make jewelry using rock candy and claims that the jewelry will look like and last as long as jewelry made from gemstones. Use evidence about the bonding in ionic and molecular compounds to evaluate this claim.
It is possible to form jewelry from rock candy that will look like and last as long as jewelry made from gemstones since the both materials contains a crystalline lattice.
Ionic bonding comprises of units cells of oppositely charged ions that come together to form a crystal lattice. Molecular compounds such as gemstones are also composed of unit cells which also give a well defined crystal lattice.
We must note that the strength of these materials come from the fact that all have a well defined crystal lattice in which particles are well ordered. It is possible to form jewelry from rock candy that will look like and last as long as jewelry made from gemstones since the both materials contains a crystalline lattice.
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The travel of speed of an electromagnetic wave of 2.8cm wavelength and of 1.1×10^10 Hz frequency is.........
3.92m/s
0.25m/s
30.8m/s
3×10^8m/s
Answer and I will give you brainiliest
Answer:
wer
c=3.00×108 m/s (the speed of light in a vacuum) λ = wavelength in meters ν = frequency in Hertz (Hz) or 1s or s−1 .
Explanation:
I might be wrong also you don't have to give me brainliest save it for someone else who knows I might be wrong
which of the following elements forms coloured compounds. A. Normal B. Transition C. Lanthanicles D. Inner transition
Answer:
B. Transition
Explanation:
Transition elements form coloured compounds because they have unfilled d orbitals.