Answer:
slower(less faster)
the particles motion in a liquid state of a substance is faster than the particle motion in substance's solid state.
Particle motion in ice is slower than particle motion in water.
What is the motion of particles?The motion of particles is the random movement of the particles or electrons inside the atoms. These movements happen due to an increase in temperature or heat.
There are three types of matter, solid, gas, and liquid. These matters have different particle movements. Because these matters have different organizations of charged particles within them.
As ice is solid, the particles in solid have compact particle present. These particles are near to each other and do not move. And water is liquid, its particles move randomly. As liquid move and get the shape of the container. Its particles are in motion.
Thus, particle motion in ice is slower than particle motion in water.
To learn more about the motion of particles, refer to the link:
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two clear solutions are mixed together in a beaker. which would most likely indicate a chemical change had occurred?
a. separation of two liquids
b. increase in volume of the liquid in the beaker
c. increase in mass of the liquid in the beaker
d. change of colour of the liquid in the beaker
Explanation:
I am not sure without knowing the name of the solutions. But according to me it can be happen which are D bcz when two solutions for e.g acid and base are mixed together, it changes its colour an form salts.
What volume of He is occupied by 2.50 mol of He at 25.0°C and a pressure of 0.980 atm?
Answer: The volume occupied by He is 62.4 L
Explanation:
According to ideal gas equation:
[tex]PV=nRT[/tex]
P = pressure of gas = 0.980 atm
V = Volume of gas = ?
n = number of moles = 2.50 mol
R = gas constant =
T =temperature =[tex]25.0^0C=(25.0+273)K=298.0K[/tex]
[tex]V=\frac{nRT}{P}[/tex]
[tex]V=\frac{2.50mol\times 0.0821 Latm/K mol\times 298.0K}{0.980atm}=62.4L[/tex]
Thus the volume occupied by He is 62.4 L
How many moles of H2 are in a flask with a volume of 2500 mL at a pressure of 30.0 kPa and a temperature of 27oC?
Answer:
0.0300 moles of H₂
Explanation:
The original equation is PV = nRT. We need to change this to show moles (n).
n = [tex]\frac{PV}{RT}[/tex]
It's important to convert your values to match the constant (r) in terms of units.
30.0 kPa = 0.296 atm
2500 mL = 2.50 L
27 °C = 300 K
Now, plug those values in to solve:
n = [tex]\frac{(0.296)(2.50)}{(0.0821)(300)}[/tex] - for the sake of keeping the problem clean, I didn't include the units but you should just to make sure everything cancels out :)
Finally, you are left with n = 0.0300 moles of H₂
I NEED HELP, PLEASE AND THANK YOU! <3
The doctor speaks to his patients in a soothing voice, maintains eye contact, and is aware of his body language. Which best describes what these actions will do for the patients?
allow for successful communication between diverse cultures
allow for greater chance of stereotyping patients
allow for an increase in misdiagnosis
allow for greater chances for a sentinel event
Answer:allow for greater chances for a sentinel event
Explanation:
Answer:
The last one
Explanation:
To much eye contact may cause discomfort to the patient. I mean like looking at the client is good but with out a blink breaking is weird.
NEED ANSWERS ASAP!!! 20 POINTS IF YOU ANSWER ALL QUESTIONS(NO LINKS, SPAMMING OR GUESSING)
What is the name of flower part #10?
Captionless Image
sepal
pollen tube
filament
Stigma
Renewable energy resources are?
A resource that cannot be readily replaced by natural means on a level equal to its use.
Invisible resources
Renewable resources that can be naturally restored.
All the above
To produce perfumes for Man
This is energy that is stored for later use.
kinetic energy
potential energy
mechanical energy
electromagnetic energy.
When fertilization has occurred the fertilized ovule changes and so does the ovary. What do they turn into?
The fertilized ovule turns into the fruit and the ovary turns into the seed.
The ovule grows bigger and the ovary withers.
The fertilized ovule turns into a seed and the ovary turns into the fruit or pod.
The fertilized ovule turns into honey and the ovary turns into nectar.
What is energy?
1 point
moving energy
stored energy
renewable energy
The ability to do work.
Wind-pollinated flowers usually have ______ and ________ petals.
1 point
big ... bright
small .... bright
big ... dull
small ... dull
What is the function of nectar?
To provide food for the flower
To attract pollinators
To attract animals to disperse the fruits
Which of the following devices transforms electrical energy into mechanical energy?
1 point
An e-reader
a fan
a manual pencil sharpener
iPod
Captionless Image
sepal
pollen tube
filament
Stigma
Renewable energy resources are?
A resource that cannot be readily replaced by natural means on a level equal to its use.
Invisible resources
Renewable resources that can be naturally restored.
All the above
To produce perfumes for Man
This is energy that is stored for later use.
kinetic energy
potential energy
mechanical energy
electromagnetic energy.
When fertilization has occurred the fertilized ovule changes and so does the ovary. What do they turn into?
The fertilized ovule turns into the fruit and the ovary turns into the seed.
The ovule grows bigger and the ovary withers.
The fertilized ovule turns into a seed and the ovary turns into the fruit or pod.
The fertilized ovule turns into honey and the ovary turns into nectar.
What is energy?
1 point
moving energy
stored energy
renewable energy
The ability to do work.
Wind-pollinated flowers usually have ______ and ________ petals.
1 point
big ... bright
small .... bright
big ... dull
small ... dull
What is the function of nectar?
To provide food for the flower
To attract pollinators
To attract animals to disperse the fruits
Which of the following devices transforms electrical energy into mechanical energy?
1 point
An e-reader
a fan
a manual pencil sharpener
iPod
its one of these and chillll
Just awnser #9#10#11#12 please ❤️ i will mark brainliest and also you get 15 points!
Answer: 9. Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune
10. The reasons for the differences in the surface temperature of terrestrial planets are due to their distance from the sun and the composition of their atmosphere.
11. 93.48 million miles
12. Iron core
Explanation: Hope this helped!! :)
Which of the following is NOT a feature of Iron (III) oxide?
a. forms a protective barrier
b. falls off in flakes
c. red-orange in color
d. requires moisture to form
Answer:
I think its it is A
Explanation:
Rust is red in colour, falls off in flakes, and forms when iron is wet. By process of elimination, it must be B.\
can i get brainly
Commercially available concentrated hydrochloric acid is 37.0% w/w HCl. Its density is 1.18g/ml. Calculate the molarity of concentrated HCl?
Answer:
M = 12.0M
Explanation:
Hello there!
In this case, according to the given by-mass percent of HCl, which can be set up in terms of mass of HCl over mass of solution, we can calculate the molarity, by multiplying by the density to get the mL's of solution and further convert to liters. Moreover, the molar mass of HCl (36.46 g/mol) must be also used to calculate the moles, since molar units requires moles of solute and liters of solution as shown below:
[tex]M=\frac{37.0gHCl}{100g\ sln}*\frac{1.18g\ sln}{1mL\ sln}*\frac{1000mL\ sln}{1L \ sln}*\frac{1molHCl}{36.46gHCl}\\\\M= 12.0M[/tex]
Best regards!
Which of the following is the car average speed?
Answer:
it would be 100 km/hr
Explanation:
if you divide each speed by the time you get 100 each time
360.0 g piece of iron is dropped into 425 mL of water at 24.00 °C. The final temperature of the water was measured as 45.70 °C. Calculate the initial temperature of the metal.
Answer:
T(initial) = 241.4˚C
Explanation:
∑q = q(metal) + q(water) = 0*
Q(metal) = (m∙c∙ΔT)Fe = 360g x 0.444j/g˚C x (45.7˚C – T(initial)) = 159.84j/˚C(45.7˚C – T(initial)) = 7304.69 j – 159.84j/˚C x T(initial)
Q(water) = (m∙c∙ΔT)water = 425g x 4.184j/g˚C x (45.7˚C - 24˚C) = 38,586.94 joules
∑[Q(metal) + Q(water)] = 7304.69j -159.84j/˚C x T(initial) + 38586.94j = 0
=> 159.84 x T(initial)j/˚C = 38586.94j
=> T(initial) = 38586.94j / 159.84j/˚C = 241.4˚C
____________________________________
*Initial equation is from Heat Loss = Heat Gained (Conservation of Energy) That is, Heat lost + (- Heat gained) = 0
=> ∑(heat loss by metal) + (- heat gained by water) = 0
using heat transfer equation with temperature change
=> mcΔT(metal) + (-mcΔT(water) = mcΔT(metal) - (mcΔT(water) = 0
Which one is an example of a hybrid allele?
Α. ΑΑ
B. none of the above
C. аа
D. Aa
Answer:
D
Explanation:
The offspring of the RRYY x rryy cross, which is called the F1 generation, were all heterozygous plants with round, yellow seeds and the genotype RrYy. As you see, the letters (RrYy) gave uppercase, then lowercase
What do these elements make:
neodymium, rhenium and sulfur
Answer:
Neodymium makes flints inside of lighters. It also takes away the green color off of glass. Rhenium is added with tungsten and molybdenum which makes filaments for lamps. Sulfur makes sulfuric acid which makes batteries and cleaners and can process ores.
Explanation:
An interesting fact for each element:
Neodymium is known for the atomic symbol Nd and the atomic number 60.
Rhenium is known for the atomic symbol Re and the atomic number 75.
Sulfur is known for the atomic symbol S and the atomic number 16.
I hope the Answer answers your question. I gave you some facts to remember those elements in the periodic table!
Neodymium(III) bromide, NdF3, neodymium(III) chloride, NdCl3, neodymium(III) bromide, NdBr3, and neodymium(III) iodide, NdI3, are the results of its reactions with fluorine, chlorine, bromine, and iodine.
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help please
Assuming that the trends continue, which of the following compounds do you predict will have the GREATEST solubility at 120°C?
A.
Ce2(SO4)3
B.
K2Cr2O7
C.
Pb(NO3)2
D.
NaCl
Answer:
K2Cr2O7
Explanation:
Solubility refers to the amount of substance that dissolves in a given mass or volume of solvent. There are several units of solubility applicable in different areas.
Solubility is dependent on temperature. The solubility curve is a graphical representation of the dependence of solubility on temperature for different chemical species.
If we study the solubility curve closely, we will see that K2Cr2O7 has the highest solubility at 100°C. This means that if the trends continue, this substance will also have the highest solubility at 120°C.
Answer: c
Explanation:
What type of reaction is illustrated?
2S03 —> 2S02 + O2
Answer:
synthesis reaction
Explanation:
synthesis reaction where reactants unite to form a single product.
2. How many moles of Hydrogen gas are needed to produce 4 moles of water?
2 H2(g) + 1 O2(g) → 2 H2O(l)
Answer:
4 mol H₂
General Formulas and Concepts:
Atomic Structure
Reading a Periodic TableMolesAqueous Solutions
States of matterStoichiometry
Using Dimensional AnalysisAnalyzing reactions RxNExplanation:
Step 1: Define
[RxN - Balanced] 2H₂ (g) + O₂ (g) → 2H₂O (l)
[Given] 4 mol H₂O
[Given] mol H₂
Step 2: Identify Conversions
[RxN] 2 mol H₂ (g) → 2 mol H₂O (l)
Step 3: Stoichiometry
[DA] Set up conversion: [tex]\displaystyle 4 \ mol \ H_2O(\frac{2 \ mol \ H_2}{2 \ mol \ H_2O})[/tex][DA] Multiply [Cancel out units]: [tex]\displaystyle 4 \ mol \ H_2[/tex]The specific heat of water is 4.184Jg ∘C. Determine the final temperature when 600.0 g water at 75.5∘C absorbs 5.90×104 J of energy.]
Answer:
[tex]T_2=98.5^{\circ}[/tex]
Explanation:
Given that,
The specific heat of water is 4.184Jg°C
Mass, m = 600 g
Initial temperature, T₁ = 75.5°C
We need to find the final temperature. We know that heat absorbed is given by :
[tex]Q=mc\Delta T\\\\Q=mc(T_2-T_1)\\\\\dfrac{Q}{mc}=(T_2-T_1)\\\\\\T_2=\dfrac{Q}{mc}+T_1\\\\T_2=\dfrac{5.9\times 10^4}{600\times 4.184}+75\\\\T_2=98.5^{\circ}[/tex]
So, the final temperature is equal to [tex]98.5^{\circ}[/tex].
Which of the isotopes are radioactive? Check all that apply.
hydrogen-1
hydrogen-3
helium-4
carbon-14
uranium-235
copernicium-277
fermium-252
carbon-12
Answer:
here you go
Explanation:
hydrogen-3
carbon-14
uranium-235
copernicium-277
fermium-252
Answer:
hydrogen-3
carbon-14
uranium-235
copernicium-277
fermium-252
:)
Explanation:
What happens to the glucose molecule during the process of cellular respiration?
It gets broken down.
It forms oxygen.
It builds muscles.
It uses up energy.
Answer:
it's broken down into carbon dioxide and water
Explanation:
The answer is A. It gets broken down.
why should we put a glass on candles for experiments and why should we put candles on sand trays ?
Answer:
1, you should use candles for experiments because, You created an area of low pressure! When the experiment is run you can see tiny bubbles escaping under the glass which shows that the increased air pressure from the heated air as the candle burns. Once the candle runs out of oxygen, the candle burns out and the remaining air inside cools down.
2. you should put candles on sand trays, Pour layers of sand into a glass vase, alternating colors with each layer. For a more interesting look, try uneven layers in various heights. Keep layering sand until you're a few inches from the top of the vase. Place your votive candle in the center of the sand.
Explanation:
its scientific proven
__________ ___________ can release different forms of energy such as electricity or light, in addition to the release of heat energy. *
Changes in Matter
Exothermic Reactions
Endothermic Reactions
Kinetic Energy
Answer:
___Exothermic Reactions_____can release different forms of energy such as electricity or light, in addition to the release of heat energy. *
How does catalysts make its way to common usage?
Potassium chloride dissolved in pure water is an
example of
A) an ionic compound dissolved in a polar solvent
B) an ionic compound dissolved in a nonpolar
solvent
C) a covalent compound dissolved in a polar solvent
D) a covalent compound dissolved in a nonpolar
solvent
Answer:
A) An ionic compound dissolved in a polar solvent
Explanation:
Potassium Chloride's chemical formula is KCl. Most ionic compounds are formed between a nonmetal and a metal. In this case, potassium is acting as the metal and chloride is the nonmetal. Water is a polar solvent due to the electronegativity of the oxygen in the molecule creating a partial negative pole, leaving the hydrogen atoms partially positive. Hence, A is your best answer.
If I helped, a brainliest would be greatly appreciated!
Question 5 (10 points) How many moles of Cuci, are needed to react with 4 moles of Al? + 3CuCl2 (aq) → Cu (s) + 2AlCl3 (24) O a 6 moles 1 mole 2 moles OO 8 moles
Answer:
A. 6 moles
Explanation:
This question contains a chemical reaction between aluminum (Al) and Copper(II)Chloride to give copper and aluminum chloride. The unbalanced chemical equation is as follows:
Al (s) + 3CuCl2 (aq) → Cu (s) + 2AlCl3
To balance the equation, we use coefficients in front of Al and Cu to ensure the amount of both are uniform on both sides of the equation. The balanced equation is as follows;
2Al (s) + 3CuCl2 (aq) → 3Cu (s) + 2AlCl3
From the balanced equation, 2 moles of Al reacts with 3 moles of CuCl2
Hence, 4 moles of Al will react with (4 × 3) ÷ 2
= 12 ÷ 2
= 6 moles of CuCl2
How many moles are there in 321g of silver hydroxide?
Need to show my work so please show how you got it
What is the mass of 5.2 moles of Fe?
Answer:
279.225g
Explanation:
The chemical name for CU3N2 is?
A) Copper (I) nitride
B) Copper nitride
C) Copper (II) nitride
D) Copper (I) nitride
6 NaOH + 2 Al --> 2 Na3AlO3 + 3 H2 If you start with 258 g of Al, how many moles of Na3AlO3 can you make?
Solution :
Assuming all Al will be consumed in the reaction.
From the given equation, 2 mole of Al produce 2 mole of [tex]Na_3AlO_3[/tex].
So, 1 mole of Al produce 1 mole of [tex]Na_3AlO_3[/tex]. .....statement 1)
Number of moles of Al in 258 gram of Al.
[tex]n = \dfrac{mass}{molar\ mass}\\\\n = \dfrac{258}{27}\ moles\\\\n = 9.556 \ moles[/tex]
Therefore, from statement 1) number of moles of [tex]Na_3AlO_3[/tex] produced is also 9.556 moles.
How can the wetland reduce flooding and what impact could this have on future generations?
Answer:
Wetlands trap the surface water, snowmelt, rain, groundwater, and flood water. They then slowly release the water. Wetland vegetations like trees and root mats also help in controlling the speed of flood water and release it slowly on the floodplain.
Explanation:
1. A 1500kg car is being lifted by a hydraulic jack attached to a flat plate. Underneath the plate is
a pipe with radius 24cm.
a) If there is no net force on the car, calculate the pressure in the pipe.
Answer:
the pressure in the pipe in the case when there is no net force on the car is 81,726 N/m^2
Explanation:
a. The computation of the pressure in the pipe in the case when there is no net force on the car is shown below
As we know that
Pressure = F ÷ area
Also
F = mg
Now
= (1500 × 9.8) ÷π (0.24)^2
= 81,726 N/m^2
Hence, the pressure in the pipe in the case when there is no net force on the car is 81,726 N/m^2
what is the scientific method
gn guys I'm finna go now byeee
The scientific method is an empirical method of acquiring knowledge.
These are the 5 scientific methods:
Make observations Ask questionsForm hypothesis make a predictionExamine