Answers
Related Questions
common things of all metals
Answers
Answer: Well most if not all metals rust due to oxidation. Most can be melted at certain temperatures or just heated to a certain degree to be maluable
Explanation:
A gravel can be broken down into different kinds of substances by physical processes. No chemical reactions are needed to separate different parts of gravel into pure substances. This is because gravel is a(n)
compound
element
homogeneous mixture
heterogeneous mixture
Answers
answer:
heterogenous mixture
Explanation:
Gravels can be broken down into different kinds of substances by physical processes because they are heterogeneous mixtures.
Gravels are generally made from different rock fragments including sandstone, limestone, and basalt. The rock fragments can be sorted out by physical means.
In other words, gravels are mixtures of different rocks but the individual rocks still maintain their identities in the mixture. Such mixtures are known as heterogeneous mixtures.
More on heterogeneous mixtures can be found here: https://brainly.com/question/24898889
Sulfur dioxide (SO2) is an unwelcome result
of burning soft coal in power plants. Some
of the SO2 ends up as sulfuric acid in acid
precipitation. The net reaction is
2 SO2(g) + O2(g) + 2 H2O(l) + 2 H2SO4(C)
What mass in grams of SO2 is needed to
react with 1563 g of O2?
Answer in units of g.
Answers
Answer: 5782
Explanation:
5782
34. The line shows the path of the ball.
As the ball moves from Point 3 to Point 4, which energy conversion is taking place?
A thermal to static
B static to thermal
C potential to kinetic
D kinetic to potential
WILL GIVE BRAINLIEST IF YOU ANSWER CORRECTLY
Answers
Answer:
C potential to kinetic
Explanation:
how is solar energy captured?
where is solar energy found?
Answers
Explanation:
how is solar energy captured?= Solar panels convert solar energy into usable electricity through a process known as the photovoltaic.where is solar energy found?= Rank Country Capacity (MW)1China175,0192Japan55,5003United States49,6924Germany45,930Which equation represents the combined gas law?
P1V1=P2V2
V1/T1= V2/T2
P1V1/T1= P2V2/T2
P1 V1 T1 = P2 V2 T2
Answers
Answer:
P1V1/T1= P2V2/T2
Explanation:
Combined gas law involves Boyle's law and Charles law altogether with the formula of Boyle's law as P1V1=P2V2
formula for charles law as V1/T1=V2/T2
so when combined form P1V1/T1=P2V2/T2
P₁×V₁/T₁=P₂×V₂/T₂ equation represents the combined gas law. Therefore, the correct option is option A.
What is combined gas law?
This combined gas law incorporates the major gas laws: Boyle's Principle, Charles' Law, but also Gay-Law. Lussac's It claims that a constant exists between the ratio of a gas's absolute temperature to the product of its pressure and volume.
This combined gas law has no recognized discoverer, unlike with the named gas laws. When all other variables are held constant, save for temperature, pressure, and volume, it is essentially a combination of all of the other gas laws that holds true. P₁×V₁/T₁=P₂×V₂/T₂ equation represents the combined gas law.
Therefore, the correct option is option A.
To know more about combined gas law, here:
https://brainly.com/question/30458409
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Which is an example of cohesion?
A. water sticking to glass
B. water sticking to water
C. hydrogen sticking to oxygen
D. oil sticking to plastic
Answers
pls mark brainliest when possible
what is the energy that travels from sun in the form of waves
Answers
Answer:
longwaves or solar radiation
Answer:
Solar Radiation
Explanation:
There could actually be different ways to say this anwser. This was just how I leaned It In school! :)
A diagram used to show inheritance patterns and to predict the genotypes of offspring
Answers
Answer:
A Punnett square
In which list are the elements arranged in order of increasing atomic mass?
a) Cl, K, Ar
b) Fe, Co, Ni
c) Te, I, Xe
d) Ne, F, Na
Answers
Answer:
aswer is A
Explanation:
because the CL,K,AR is correct since it is order right
What is definition "scientific question"?
Answers
Answer:
A scientific question is basically a question that can lead to a hypothesis to help us figure out the observation in science. I hope this helps you
Which one has the highest Hydrogen Bonding:
1. HF
2. HCL
3. H2O
4. NH3
Answers
Answer:
the answer is the
first one
A gas occupies 3.00 L at 1.50 atm and 25.0 °C.
If the pressure is increased to 2.50 atm, and
the temperature is increased to 35.0°C, what
will be the final volume?
Answers
Answer:
V₂ = 1.86 L
Explanation:
Given data:
Initial temperature = 25.0°C (25+273 = 298 k)
Initial volume = 3.00 L
Initial pressure = 1.50 atm
Final pressure = 2.50 atm
Final temperature = 35.0°C (35+273 = 308K)
Final volume = ?
Solution:
P₁V₁/T₁ = P₂V₂/T₂
P₁ = Initial pressure
V₁ = Initial volume
T₁ = Initial temperature
P₂ = Final pressure
V₂ = Final volume
T₂ = Final temperature
By putting values,
V₂ = P₁V₁ T₂/ T₁ P₂
V₂ = 1.50 atm × 3.00 L × 308 K / 298 K × 2.50 atm
V₂ = 1386 atm .L. K / 745 K.atm
V₂ = 1.86 L
How Non-Polar Molecule disolves in Non-Polar Molecule?
Answers
=)
Explanation:
Nonpolar compounds do not dissolve in water. The attractive forces that operate between the particles in a nonpolar compound are weak dispersion forces. However, the nonpolar molecules are more attracted to themselves than they are to the polar water molecules.
10. A doctor can obtain images of organs and bones by
injecting a patient with a solution of Tc-99m. The
half-life of the metastable Tc-99m is six hours.
Determine the fraction of an original sample of
metastable Tc-99m that remains unchanged after 24
hours
Answers
Answer:
6.25% remains after 24 hours
Explanation:
Isotope decay of an atom follows the equation:
Ln[A] = -kt + Ln[A]₀
Where [A] is amount of isotope after time t,
k is rate constant = ln 2 / Half-life = 0.11552hours⁻¹
[A]₀ is initial amount of A = 100%
Replacing:
Ln[A] = -0.1152hours⁻¹*24hours + Ln[100%]
Ln[A] = 1.8326
[A] = 6.25% remains after 24 hours
If you pluck a guitar string hard the sound waves it gives off will have __________ amplitudes.
Answers
Answer:large
Explanation: I got it right on the quiz
Answer: Large
Explanation: If you plucked a guitar string lightly, the string would vibrate and give off sound waves with small amplitudes. The resulting sound would be soft, with a low decibel level. If you then plucked the guitar string as hard as you could, the string would vibrate strongly and give off sound waves with large amplitudes. The resulting sound would be loud, with a higher decibel level.
When the two alleles an organism has are the same it is called heterozygous
True
or
False
Answers
Answer:
false!
explanation:
Homogeneous are when they are similar! (example; female chromosomes XX) heterozygous are opposites!(example;male chromosomes XY)
If 489 mL of carbon dioxide has a pressure of 2.75 atm. If the gas is compressed to 254 mL, what is the
new pressure?
A) 1.43 atm
B) 3.45 atm
C) 5.29 atm
D) 6.21 atm
Answers
Answer:
5.29 atmExplanation:
The new pressure can be found by using the formula for Boyle's law which is
[tex]P_1V_1 = P_2V_2[/tex]
Since we are finding the new pressure
[tex]P_2 = \frac{P_1V_1}{V_2} \\[/tex]
From the question we have
[tex]P_2 = \frac{489 \times 2.75}{254} = \frac{1344.75}{254} \\ = 5.294291...[/tex]
We have the final answer as
5.29 atmHope this helps you
Which of the following solid substances contains positive ions immersed in a sea of
mobile electrons?______
a) O2 b) Cu c) CuO d) SiO2
Answers
That will be letter B which is Cu
Answer:
Cu
Explanation:
In metallic bonds,the valence electrons from the s and p
orbitals of the interacting metal atoms delocalise i.e,
instead of orbiting their respective metal atoms, they
form a sea of electrons that surrounds the positively charged atomic nuclei of the interacting metal ions.
On a hot summer day the temperature is 35°C, barometric pressure is 103 kPa, and the relative humidity is 90%. An air conditioner draws in outside air, cools it to 20°C, and delivers it at a rate of 12,500 L/h. Calculate the rate of moisture condensation (kg/h) and the volumetric flow rate of the air drawn from the outside.
Answers
Answer:
The rate of moisture condensation (kg/h) = 0.022652 mol H2O / mol.
The volumetric flow rate of the air drawn from the outside = 13506.88 L/h.
Explanation:
Without mincing words, let us dive straight into the solution to this problem.
STEP ONE: The first thing to calculate for or determine is the Mol fraction of H2O inlet and Mol fraction of H2O outlet.
Therefore, the Mol fraction of H2O inlet = (0.90 x 42.2 mmHg/103000 Pa) x (101325 Pa/760mmHg)= 0.0492 mol H2O / mol.
Also, the Mol fraction of H2O outlet = (17.5 mmHg/103000 Pa) x (101325 Pa/760mmHg) = 0.022652 mol H2O / mol.
STEP TWO: Determine the Molar flow rate of inlet air, Molar flow rate of outlet air and the dry air balance.
The Molar flow rate of outlet air = (12,500 L/h) x (1mol/22.4L) x (273K/293K) x (103000 Pa / 101325 Pa) = 528.54 mol/h
Hence, the Molar flow rate of outlet air = 528.54 mol/h.
The Molar flow rate of inlet air = (1 - 0.022652 mol H2O / mol. ) x 528.54 mol/h ÷ (1 - 0.0492 mol H2O / mol) = 543.3 mol/h.
Hence, the volumetric flow rate of the air drawn from the outside = ( 543.3 mol/h.) x (22.4L/mol) x (308K/273K) x (101325 Pa/103000 Pa) = 13506.88 L/h.
STEP THREE; Determine the molar flow of water.
Thus, the molar flow of water = 543.3 mol/h - 528.54 mol/h = 14.76 mol/h.
STEP FOUR: Determine the rate of moisture condensation (kg/h).
The rate of moisture condensation (kg/h) = 14.76 mol/h × (18g/mol) x (1kg/1000g) = 0.266 kg/h.
What is the relationship between thermal energy, kinetic energy and the transition between the three states of matter
Answers
Kinetic energy is turned into thermal energy and thermal energy is responsible for the heat or lack thereof that transitions elements from different states.
A golf cart weighing 272 kilograms broke down on the cart path. A tow truck driver decided to use a force of 1000 newtons to tow the golf cart. According to Newton's law of force and acceleration, what will the acceleration of the golf cart on a frictionless surface be, in meters per second squared, to the nearest hundredth?
Answers
Answer:
Copper and its compounds have many important uses in modern society. Most electrical equipment has copper wiring. Copper is also used to make many alloys. An alloy is made by melting and mixing two or more metals. The mixture has properties different from those of the individual metals
Explanation:
A pressure of 125,400 Pa is equal to
kPa.
Answers
Answer:
it is equal to 125 kPa
Explanation:
move the decimal 3 to the left
Please help thank you!!!!
(I’ll mark brain list and give 23 points)
Answers
Answer:
Question A, B, and D are all correct.
Fill in the blank
Potential energy is energy an object has due to its ____
or condition
Answers
Answer :position
Explanation:
Potential energy is the energy stored in an object due to its position
Which of the following families from the periodic table are also groups? Select all that apply.
A.alkaline earth metals
B.transition metals
C.noble gases
D.lanthanides
E.halogens
Answers
I hope this helps!
If it’s correct, could you mark me as brainliest?
Atoms of which of the following elements have the smallest atomic radius?
Answers
Answer:
The answer is helium, I hope this is helpful :)
2 A 3-meter-long ramp was used to lift gold into railroads for transfers. The railroads were 1 meter off the ground. What was the ideal mechanical advantage of the ramp?
Answers
Answer:
3
Explanation:
For an ideal ramp, M.A/V.R = 1 where M.A = mechanical advantage and V.R = velocity ratio.
Now, V.R = distance moved by effort, d'/distance moved by load, d = d'/d
Now, d' = 3 m and d = 1 m.
So, V.R = d'/d = 3 m/1 m = 3
From M.A/V.R = 1
M.A = V.R = 3
So, the ideal mechanical advantage of the ramp M.A = 3
If force = mass x acceleration, then what is the force of an object with a mass of 30 kg and an acceleration of 2.2 m/s2?
Answers
Answer:
66 NExplanation:
The force acting on an object given it's mass and acceleration can be found by using the formula
force = mass × acceleration
From the question we have
force = 30 × 2.2
We have the final answer as
66 NHope this helps you
Plz help correct answer will get brainliest.
Answers
Answer:
D... i think lemme know if im wrong
Answer:my answer is never wrong
The edge
Explanation:
