copper chloride reacts with magnesium but magnesium chloride does not react with copper. Why is this?
Answer:
Mg is highly reactive as compared to that of Copper owing to its periodic position
Explanation:
MG lies in the second column of the periodic table while Cu lies in the 11th column of the periodic table from the left.
The elements in the first two columns are metallic in nature are highly reactive.
In CuCl2 solution, Mg being highly reactive replaces Cu but in MgCl2 solution, Cu being less reactive in nature do not replaces the Mg from the solution.
Help help help help help help
what is the freezing point of glucose?
Answer:
In Fahrenheit it is 294.8°F and in Celsius it is 146°C.
Part
A certain gas is present in a 110 L cylinder at 2.0 atm pressure. If the pressure is increased to 4.0 atm, the volume of the gas
decreases to 5.5 L. Find the two constants k. the initial value of k, and kr, the final value of k, to verify whether the gas obeys Boyle's
law.
Express your answers to two significant figures separated by a comma.
View Available Hint(s)
ΤΟ
ΑΣΦ
t
2) ?
k ke =
Submit
Answer:
See explanation
Explanation:
Recall that from Boyle's law;
Volume is inversely proportional to pressure at constant temperature
V α 1/P
V = k/P
k = PV
Hence, for Boyle's law, PV = constant
In the first case;
P = 2.0 atm , V= 110 L
PV = 110 * 2.0 = 220
In the second case;
P = 4.0 atm , V= 5.5 L
PV = 4.0 * 5.5 = 22
Since PV is not constant in both cases, the gas does not obey Boyle's law.
If x represents the molar solubility of Ca(OH)2 , what is the correct equation for the K sp ?
Ksp=x^2
Ksp=2x^3
Ksp=4x^3
Ksp=x^3
Answer:
Ksp = 4x³
Explanation:
Step 1: Write the reaction for the solution of calcium hydroxide
Ca(OH)₂(s) ⇒ Ca²⁺(aq) + 2 OH⁻(aq)
Step 2: Make an ICE chart
Let "x" be the molar solubility of calcium hydroxide.
Ca(OH)₂(s) ⇒ Ca²⁺(aq) + 2 OH⁻(aq)
I 0 0
C +x +2x
E x 2x
Step 3: Write the expression for the solubility product constant (Ksp)
The solubility product constant is equal to the product of the concentrations of the products raised to their stoichiometric coefficients.
Ksp = [Ca²⁺] × [OH⁻]² = x × (2x²) = x × 4x² = 4x³
if [tex]x[/tex] represents the molar solubility of calcium hydroxide then correct equation for the Ksp is [tex]\bold {x^3}[/tex]
Solubility product constant Ksp:
It is the equilibrium constant for a solid substance that are dissolved in an aqueous solution. It expresses how much a solute is dissolved in solution.
The reaction of calcium hydroxide for the solution
[tex]\bold {Ca (OH )_2(s) \rightarrow Ca^2^+(aq) + 2 OH^-(aq)}[/tex]
1 mole of calcium hydroxide is dissociate into 1 mole of calcium ion and 2 moles of Hydroxil ion.
The Ksp equation for the solution,
[tex]\bold {Ksp =[Ca^2^+][ OH^-]^2}\\[/tex]
If [tex]x[/tex] represents molar solubility,
[tex]\bold {Ksp =[x][ x]^2 = x^3}\\[/tex]
Therefore, if [tex]x[/tex] represents the molar solubility of calcium hydroxide then correct equation for the Ksp is [tex]\bold {x^3}[/tex]
To know more about Ksp,
https://brainly.com/question/4736767
Large cities in the U.S. often formed near the ocean.
What benefit does the ocean provide for people in nearby large cities?
Answer:
a means of work
Explanation:
since its near oceans they are closer to the fish
Most acids are strong acids.
A. True
B. False
Answer:
False, There are only a few strong acids, so many people choose to memorize them. All the other acids are weak
Explanation:
Calculate the number of moles of NO in 4.10 x 1021 molecules of NO.
Answer:
.0068
Explanation:
You divided the number of molecules by 6.022*10^23 (Avagodros Number) to get the number of moles.
explain the importance of changing states of matter
As a result, when a substance absorbs enough energy then its atoms or molecules move around. And, when increase in this energy takes place then atoms tend to collide frequently with each other. Hence, it causes change in state of a substance. Therefore, changes in matter are important for the conservation of energy
mark brainliest if right
What is the law of conservation or matter? Please helppppppp.....no links no trolling otherwise I'll report!
May give brainliest to first correct. :)
Answer:
In physics, a conservation law states that a particular measurable property of an isolated physical system does not change as the system evolves over time. Exact conservation laws include conservation of energy, conservation of linear momentum, conservation of angular momentum, and conservation of electric charge.
Explanation:
hope this helps :)
5
How many J of energy are needed to raise the temperature of 18.3 g of
water from 11.88°C to 49.32°C?*
2540 J
1740 J
2870 J
3570 J
Q = mcΔT, where Q is the heat energy, m is the mass, c is the specific heat, and ΔT is the change in temperature (T₂-T₁). The specific heat of water is 4.184 J/g °C. We are given the mass of water (m = 18.3 g), the final temperature (T₂ = 49.32 °C), and the initial temperature (T₁ = 11.88 °C). The change in temperature, ΔT, equals 49.32 °C - 11.88 °C = 37.44 °C. With all these values at hand, we can solve for the amount of energy needed, Q:
Q = (18.3 g)(4.184 J/g °C)(37.44 °C) = 2866.7 J ≈ 2870 J (three sig figs).
Which of these statements BEST describes a possible environmental
consequence in constructing a large-scale wind farm to generate
electricity?
A Wind farms alter the regional climate.
B. Wind farms can disrupt migrating wildlife.
C. Wind farms use a renewable energy source.
D. Wind farms generate direct current electricity.
Answer:
Option B. is correct
Explanation:
Wind turbines collect the kinetic energy of wind using the turbine blades. The blades turn an electric generator as they are connected to a drive shaft, which in turn produces electricity.
These turbine blades can disrupt flying wildlife including bats and birds.
So,
wind farms can disrupt migrating wildlife.
Option B. is correct.
The oceanic crust is mostly associated with the —————.
A. Thermosphere
B. Hydrosphere
C. Asthenosphere
D. Volcanoesphere
E. Atmosphere
Below is a diagram of a man pushing a furniture to the left with 100N of force. Which of the following statements is incorrect?
A.) The furniture does not move if the force of friction is 100N to the right.
B.) The force exerted by the man on the furniture is equal to the force exerted by the furniture on the man.
C.) The force of friction must be lower than 100N for the cabinet to move.
D.) The force exerted by the man and the force of friction must be balanced in order to accelerate it to the left.
Answer:
If I'm not mistake it should be D
Explanation:
Please inform me if im right or wrong.
Please help!!!!!!!!!!!!!!
Answer:
my guy we need to read lesson cuz int know what any of that mean
Explanation:
take it before its gone
Copper metal reacts with nitric acid according the equation below 3 Cu (s) +8 HNO 3(aq) -...m+3 Cu^ 2+ (aq)+2NO (g) +6 NO 3 (aq)+4 H 2 O 0 What mass of NO (g) will be produced if 8.96 g of copper are reacted wtih excess nitric acid. Be sure to include units.
Answer:
i think it is NO2 and +6 NO 6 that's all I have
Liquids have no definite shape
True/False
What product(s) would be formed when these are the reactants? C5H12 + O2 (limited)
Answer:
Carbon dioxide and water I believe because it is a combustion reaction
What is the frequency of light (in per seconds) that has a wavelength of 670 nm?
Answer:
[tex]f=4.47\times 10^{14}\ Hz[/tex]
Explanation:
Given that,
The wavelength of light, [tex]\lambda=670\ nm=670\times 10^{-9}\ m[/tex]
We need to find the frequency of the light. The relation between the frequency and wavelength is given by :
[tex]v=f\lambda[/tex]
The speed of light is equal to c.
So,
[tex]f=\dfrac{c}{\lambda}\\\\f=\dfrac{3\times 10^8}{670\times 10^{-9}}\\\\f=4.47\times 10^{14}\ Hz[/tex]
So, the frequency of light is equal to [tex]4.47\times 10^{14}\ Hz[/tex].
Vines most successfully compete for sunlight in tropical rainforests by _______.
a.
climbing up into the canopy
b.
strangling the trees they grow on
c.
having broader leaves that absorb more light
d.
having thick, woody stems
Answer:
climbing up into the canopy
Explanation:
A buffer solution contains 0.20 mol of propionic acid (CH3CH2COOH) and 0.25 mol of sodium propionate (CH3CH2COONa) in 1.50 dm3.
What is the pH of this buffer?
Enter your answer using two decimal places.
Answer:
I don't know how to do it the subject
A _________________ is the path of energy transfer from producer to consumers.
Someone please help
Answer: Food chain
Explanation: none
If the Sun suddenly lost all of its gravity, which statement would best describe how the planets would move?
a
The planets would stop moving.
b
The planets would all collide into each other.
c
The planets would travel in a straight line.
d
The planets would continue moving in a circular path.
Answer:
It's B
Explanation:
It's the sun's gravitational pull that keeps our planets revolving around it and as soon as it's gone it's a high chance of it being a pinball machine and everything colliding into each other.
You have a solution of NaOH that is 3.0 M. If you need 250 mL of a 1.5 M solution, what volume of the stock solution should you use?
Answer:
answer is 30 g!!!!!!!!!
Write the balanced NET IONIC equation for the reaction that occurs when ammonium bromide and sodium hydroxide are combined. This reaction is classified as fill in the blank 6 . A. Strong Acid Strong Base B. Weak Acid Strong Base C. Strong Acid Weak Base D. Weak Acid Weak Base The extent of this reaction is: fill in the blank 7 . A. ... Below 50% B. ... 50% C. ... Above 50% D. ... 100%
Answer:
c
Explanation:
Define What is boiling
Answer:
Boiling is the rapid vaporization of a liquid, which occurs when a liquid is heated to its boiling point, the temperature at which the vapour pressure of the liquid is equal to the pressure exerted on the liquid by the surrounding atmosphere.
Explanation:
Hi
True or False:
The geocentric model of the solar system is correct.
Answer:
True
Explanation:
Based on the kinetic theory, which statement is true?
Matter consists of only large molecules.
Matter is made up of only charged particles.
The particles of matter are in constant motion.
The particles of matter have zero kinetic energy.
Answer: the particles of matter are in constant motion
took the test
(a)0.444 Mol of COCl2 in 0.654 L of solution
(b) 98.0 gram of phosphoric acid, H3PO4, in 100 L of solution
(c) 0.2074 g of calcium hydroxide, Ca(OH)2 in 40.00 mL of solution
(d)10.5 kg of Na2AO4.10H2O in 18.60 L of solution
(e) 7.0 x 10-3 Mol of l2 in 100.0 ml of solution
(f) 1.8 x 104 mg of HCL in 0.075 of solution
Answer is in a photo. I can only upload it to a file hosting service. link below!
bit.[tex]^{}[/tex]ly/3a8Nt8n