Answer:
Momentum
Explanation:
If there is more mass, there is more momentum and if there is more speed there is more momentum. The formula for momentum is mass x speed.
Write the complete electron configurations for
(i) copper
(ii) xenon
Answer:
hello to get it from you and your favouri love your pic
Please help!!!!!!!!!!!!!
Write the formulas for the following ionic compounds.
potassium iodide
magnesium phosphide
silver sulphide
iron(III) bromide
magnesium hydroxide
sodium sulphate
lead (IV) nitrate
ammonium carbonate
Answer:
1) KI
2) Mg3P2
3) Ag2S
4) FeBr3
5) Mg(OH)2
6) Na2SO4
7) Pb(NO3)4
8) (NH4)2CO3
The relative formula mass of a compound with formula XS0, is 120. Calculate the ralative
atomic mass of Y.
[Relative atomic mass: S, 32; 0, 16]
Answer:
72
Explanation:
Relative atomic mass of YSO = Relative atomic masses of Y + S + O
This implies; Y + 32 + 16 = 120
Y = 120 - 48
Y = 72
Hence, the relative atomic mass of Y = 72
.4.2 moles of copper would contain how many grams of copper?
Answer:
0.015736631731344 mole
Explanation:
You can view more details on each measurement unit: molecular weight of Copper or mol The molecular formula for Copper is Cu. The SI base unit for amount of substance is the mole. 1 grams Copper is equal to 0.015736631731344 mole.
What is the answer to:
5.67 in x 23.321in
Answer:
132.23007
Explanation:
You took a summer job at a restaurant. Your boss wants you to mop the bathroom and kitchen floors before you leave tonight. She hands you an unmarked white jug that is filled with a watery clear liquid. What are three things you should do before you mop the floor?
What do you already know about the structure of a water molecule?
Answer:
The key to understanding water's chemical behavior is its molecular structure. A water molecule consists of two hydrogen atoms bonded to an oxygen atom, and its overall structure is bent. This is because the oxygen atom, in addition to forming bonds with the hydrogen atoms, also carries two pairs of unshared electrons
Explanation:
Hope it helps
Cuantas moléculas de K² Cr ² 0⁷ hay en 0.5 dm³ de una solución de dicromoto de potasios de 30% en p/p y una densidad relativo de 1.15? (Coronel R., 2018)
Answer:
El número de moléculas de K₂Cr₂O₇ presentes en la solución es de aproximadamente 3,52058347 × 10²³ moléculas
Explanation:
Los parámetros dados de la solución de dicromato de potasio son;
El volumen de la solución, V = 0,5 dm³ = 0,0005 m³
El porcentaje en masa de dicromato de potasio en la solución = 30% p / p
La densidad relativa de la solución, RD = 1,15
Por lo tanto, la masa de dicromato de potasio en la solución, m = 30% de la masa de la solución.
El RD de la solución = (La densidad de la solución) / (La densidad del agua)
La densidad del agua = 997 kg / m³
Por lo tanto, tenemos;
RD = 1,15 = (La densidad de la solución) / (997 kg / m³)
La densidad de la solución, ρ = 1,15 × 997 kg / m³ = 1,146,55 kg / m³
La masa de la solución, m = ρ × V
∴ m = 1.146,55 kg / m³ × 0.0005 m³ = 0,573275 kg
La masa de dicromato de potasio en la solución, m₁ = 0.3 × m
∴ m₁ = 0.3 × 0.573275 kg = 0.1719825 kg = 171.9825 g
La masa de dicromato de potasio en la solución, m₁ = 171,9825 g
La masa molar del dicromato de potasio, K₂Cr₂O₇ = 294,185 g / mol
El número de moles de dicromato de potasio, K₂Cr₂O₇ en la solución, n = (Masa, m) / (Masa molar)
∴ n = 171,9825 g / (294,185 g / mol) = 0,584606625 moles
∴ El número de moléculas de K₂Cr₂O₇ presentes en la solución = n ×
Dónde;
= Número de Avogadro = 6.0221409 × 10²³ mol⁻¹
Por lo tanto, tenemos;
El número de moléculas de K₂Cr₂O₇ presentes en la solución = 0.584606625 moles × 6.0221409 × 10²³ mol⁻¹ = 3.52058347 × 10²³ moléculas
El número de moléculas de K₂Cr₂O₇ presentes en la solución ≈ 3.52058347 × 10²³ moléculas
How many moles of oxygen are required to use up 2 moles of propane?
Answer:
6.0 moles
Explanation:
The thing to remember about balanced chemical equations is that the stoichiometric coefficients added to each chemical species that takes part in the reaction are equivalent to moles.
I think its 10 moles, hope this helps.
Describe the relationship between thermal energy and temperature of a substance.
help me pls :D
Please help me ASAP :(
Hydrogen-3 has a half-life of 12.32 years. It decays into helium-3. Suppose a
sample contains 6 atoms of hydrogen-3 and 18 atoms of helium-3. About
how old is the sample?
A. 12.32 years
B. 49.28 years
C. 36.96 years
D. 24.64 years
Answer:
24.64
Explanation:
Just took the test.
I have an irregular object that I want to find the density of. I put it in a graduated cylinder and the water rises by 12 mL. I put the object on a scale and it measures 42 g. What is the density of the object?
Answer:
12
Explanation:
The work done on a machine, the product of the input force and the distance through which the force is exerted.
A- Work, input
B- Work, output
C- Mechanical Advantage
D- Power
Please help!
A solution of hydrochloric acid contains
a. fewer hydronium ions than chloride ions
b. fewer hydroxide ions than hydronium ions
c. more hydronium ions than chloride ions
d. more hydroxide ions than hydronium ions
Answer:
c)
more hydronium ions than chloride ions
Why does air with higher amounts of water vapor have a lighter density?
Answer:
moist air is less dense than dry air because water has a lower molecular weight than nitrogen and oxygen
Answer:
Water vapor is a relatively light gas when compared to diatomic Oxygen and diatomic Nitrogen. Thus, when water vapor increases, the amount of Oxygen and Nitrogen decrease per unit volume and thus density decreases because mass is decreasing.
What must happen for heat to be transferred by convection?
Answer:
D.) The liquid or gas must circulate to move the heat
Explanation:
Name 3 parts of an atom
Answer:
the three parts are protons, neutrons, and electrons
Explanation:
have a good day
What makes up soil and where do these main components come
from? ASAP
Answer:
Soil is a mixture of minerals, dead and living organisms (organic materials), air, and water.
Explanation:
Dead organisms decompose(kind of like fertilizer)
water comes from nearby watersheds, precipitation processes, etc.
Answer:
Soil is made up of three main components – minerals that come from rocks below or nearby, organic matter which is the remains of plants and animals that use the soil, and the living organisms that reside in the soil. The proportion of each of these is important in determining the type of soil that is present.
Which of the following would most likely be spontaneous?
A. A reaction that is more ordered
B. A reaction that is at equilibrium
C. A reaction that requires energy
D. A reaction that produces heat
Answer:
D
Explanation:
i took the test
A reaction which is exothermic and results in an increase in the entropy of the system is said to be always spontaneous. A spontaneous reaction is one that produces heat. The correct option is D.
What is a spontaneous reaction?A process which has an urge or a natural tendency to occur under a given set of conditions is defined as the spontaneous process. Some of the spontaneous process need no initiation, they take by themselves. Dissolution of common salt in water, evaporation, etc. are examples.
Almost all spontaneous process are found to be exothermic. They release heat and warm up their surroundings. These reactions move towards the equilibrium with no need for an energy input from an external source.
Gibbs free energy is an important parameter to determine the spontaneity of a reaction. If the value of ΔG is negative, then the reaction will be spontaneous.
Thus the correct option is D.
To know more about spontaneous process, visit;
https://brainly.com/question/30738654
#SPJ2
A chemical reaction at equilibrium always has _______.
A. A forward reaction rate that equals the reverse reaction rate.
B. A high Keq value.
C. Equal concentrations of reactants and products.
D. Zero energy
Answer:
A
Explanation:
can someone help me with this?
Answer:
165.27 K
Explanation:
Initial Temperature, T1 = 303K
Initial Pressure P1 = 3.3 atm
Final Pressure P2 = 1.8 atm
Final Temperature T2 = ?
Using the equation
P1 / T1 = P2 / T2
3.3 / 303 = 1.8 / T2
T2 = 1.8 * 303 / 3.3
T2 = 165.27 K
Question 10 (4 points)
A 3.4 L balloon is let go near the surface of the Earth where the pressure is about 1.15 atm. As the balloon floats up to the top of the
atmosphere where the pressure is only about 0.35 atm it expands. What is the volume of the balloon at the top of the atmosphere?
There are the same number of atoms in a mole of calcium (Ca) than in a
mole of helium (He).
True
False
Answer:
True
Explanation:
A mole is defined as a certain amount of a unit. Such as atoms or molecules.
when u get ur answer what type of reaction is it?
-double replacement
-combustion
-synthesis
-decomposition
-single replacement
Answer: combustion reaction
[tex]C_{25}H_{52}+38O_2\rightarrow 25CO_2+26H_2O[/tex]
Explanation:
According to the law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of products has to be equal to the mass of reactants. The number of atoms of each element has to be same on reactant and product side.
The balanced chemical equation is:
[tex]C_{25}H_{52}+38O_2\rightarrow 25CO_2+26H_2O[/tex]
The given reaction is a combustion reaction as in a combustion reaction , a susstaance is oxidized in the presence of oxygen to give carbon dioxide and water.
Calculate the equivalent molar concentration of sodium hydroxide if the titration of 20,00 ml of 0,05075 M solution of oxalic acid consumed 19,50 ml of this solution.
Answer:
0.1041 M
Explanation:
The reaction that takes place is:
2NaOH + H₂C₂O₄ → Na₂C₂O₄ + 2H₂OFirst we calculate how many moles of oxalic acid reacted, using the given molarity and concentration:
20.00 mL * 0.05075 M = 1.015 mmol H₂C₂O₄Then we convert H₂C₂O₄ moles to NaOH moles, using the stoichiometric coefficients:
1.015 mmol H₂C₂O₄ * [tex]\frac{2mmolNaOH}{1mmolH_2C_2O_4}[/tex] = 2.03 mmol NaOHFinally we calculate the molarity of the NaOH solution:
2.03 mmol NaOH / 19.50 mL = 0.1041 MExplain how water is able to control fire.
Answer ASAP
Plzz
Answer: Fire requires oxygen to burn. Water "smothers" fire and prevents it from acquiring more oxygen. Fire also requires heat, which cool water may prevent/remove.
Answer:
See what happens is the water bender uses the water to control the fire by... jp lol
Explanation:
Real answer is the water puts out the fire because it is a non-combustible aqueous solution, therefore it's able to be used to control a fire.
I need help with my science vocabulary!!! Please help!
Answer:
1. B
2. E
3. A
4. D
5. C
~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Hope I helped!!!
GL :)
26k}+NH4NO3->NH4+NO-3
Answer:
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3) Calculate the net force *
3N
5N
Answer:
2N
Explanation:
since they are going both sides you subtract