The solid does not consist of that particle which can not be compressed and have a definite shape.
What is solid?One of matter's four basic states is solid. A solid's molecules are tightly packed and carry the minimum amount of kinetic energy. A solid's structural stiffness and resistance to a force applied to its surface define it. Although they are locked in fixed locations, they do vibrate. Solids have a defined structure and volume and cannot flow since the particles do not move. Solids are difficult to crush because the particles are often so close together.
What is particles?A particle is a small, localized object to which numerous physical or chemical qualities, like volume, density, or mass, can be assigned.
To know more about solid click here.
https://brainly.com/question/9402776.
#SPJ2
When 0.875 g. of magnesium was heated in air, 1.25 g. of magnesium oxide
(MgO) was produced. How much oxygen must be added?
Answer:
1. What is the coefficient for calcium in the balanced equation?
2 Ca + 5 NaOH → 4 Na + 2 Ca(OH)2
2. The burning of 20.0 g of acetylene (C2H2) produces what mass of carbon dioxide? You must
write the equation, balance it and solve the mass-mass problem.
a. Balanced equation:
2 C2H2 + 5 O2 4 CO2 + 2 H2O
Explanation:
Can magic 8 ball wash with water?
Determine the grams of water produced when 250 grams of barium hydroxide react
with 125 grams of HCI. Refer to the balanced equation below.
Ba(OH)2 (aq) + 2HCl (aq) --> 2H2O (l) + BaCl2 (aq) (balanced)
Answer:
Explanation:
Ba(OH)₂ (aq) + 2HCl (aq) --> 2H₂O (l) + BaCl₂ (aq)
171 g 2 x 36.5 g 2 x 18 g
73 g of HCl reacts with 171 g of Ba(OH)₂
125 g HCl reacts with 171 x 125 / 73 g of Ba(OH)₂
= 292.8 g of of Ba(OH)₂
Ba(OH)₂ available is 250 g , so it is the limiting reagent .
171 g of Ba(OH)₂ forms 36 g of water
250 g of Ba(OH)₂ forms 36 x 250 / 171 g of water
= 52.63 g of water.
A 3.20-mol sample of gas occupies a volume of 350. mL at 300.0 K. Determine the
pressure of the gas.
Answer:
[tex]P \approx 225atm[/tex]
Explanation:
From the question we are told that:
Moles of sample n=3.20_mol
Volume V=350mL
Temperature T=300k
Generally the equation for ideal gas is mathematically given by
[tex]PV=nRT[/tex]
[tex]P=\frac{nRT}{V}[/tex]
[tex]P=\frac{3.20*0.08206*300}{350*10^{-3}}[/tex]
[tex]P=225.079atm[/tex]
[tex]P \approx 225atm[/tex]
50 pts please help. will give brainliest
Answer:
1Cu --> 1Cu+2 + 2e
2e +1S-->1S-2
Cu + S --> CuS
Explanation:
How would the number of atoms in a 2.02g sample of hydrogen compare to the number of atoms in a 32.00g sample of oxygen
Answer:
Number of atoms is equal.
Explanation:
1 mol of anything contains NA particles.
NA is known as Avogadro's number, 6.02×10²³
We determined the moles of each compound. Both molecules are dyatomic,
H₂ → 2.02 g . 1mol / 2.016 g = 1 mol
O₂ → 32 g . 1mol / 32g = 1 mol
Both have the same amount of moles.
In conclussion, the number of atoms is the same in both samples.
give me the type of reactions ___ CuCO3 → ___ CuO + ___ CO2
2
A chart with the densities of four metals is shown.
Metal
Density (gicm')
Titanium
4.5
Zinc
7.1
Nickel
88
Silver
10.5
Students were given a sample of an unknown metal and told to determine
its density. They measured its mass as 26.4 g and its volume as 3.0 cm?
Use the chart to determine which metal the students were given.
Answer:
mass(m)=26.4g
volume (v)=3.0cm²
we have
density =m/v=26.4/3=8.8g/cm³
since it is equal to density of nickel.
Option C nickel is a required answer.
Answer:
[tex]\huge\boxed{\fcolorbox{green}{yellow}{option \: \: c}}[/tex]
no links pls it’s very unhelpful
answer : i don’t knowww :)
Right spelling:
Answer: I don’t know. :)
Mr. Ragusa is approached in his lab by one of his students named Hassan. Hassan had found a bottle of nitric acid that did not have a labeled molarity and wanted Mr. Ragusa to help him find it's molarity. Mr. Ragusa filled a buret to 4.85 mL with 0.30 M NaOH. Mr. Ragusa added 5 mL of the acid to a flask and added some phenolphthalein. Mr. Ragusa hit the titration spot on, and the final volume in the buret was 43.69 mL. What is the concentration of the Nitric Acid?
Round your answer to 2 decimal places. Include a unit in your answer. (ex: 1.2M)
HNO3 + NaOH --> NaNO3 + H2O
Answer:
2.33M
Explanation:
1. First, make sure the equation is balanced. In this case it would be HNO3+NaOH --> NaNO3 + H2O. (it is already balanced here.)
2. Find the initial volume, final volume, the volume of acid, volume of NaOH.
a. Initial Volume: 4.85 mL
b. Final Volume: 43.69
c. Acid (HNO3) Volume: 5 mL
d Volume NaOH: Initial V - Final V --> 43.69 mL - 4.85 mL = 38.84 mL NaOH
3. Find moles of NaOH reacted using the volume from D. Convert this volume into Liters. Multiply the volume of NaOH by molarity of NaOH given to you before. (.30 M NaOH)
a. x mol NaOH/ .03884 L = .30 mol NaOH/ 1 mol = .011652 mol NaOH
4. Now find the moles of acid. The acid given to you in the equation is HNO3. The .011652 mol NaOH is from the moles reacted that you just found. The moles on the right side would be the co-efficient in front of the elements in the equation. Since this equation does not have any coefficients (it's already balanced), it would just be 1.
a. .011652 mol NaOH/ x mol HNO3 = 1 mol NaOH/ 1 mol HNO3.
x = .011652 mol HNO3
5. Now find the concentration, also known as molarity. Divide the .011652 mol by the volume of acid you have been given (5 mL). Before using 5 mL, divide it by 1000 to get the Liter form.
a. .011652 mol HNO3/ .005 L = 2.3304 M HNO3
I hope you understand now. God bless!
How many joules of heat are needed to raise the temperature of 62.0 g of ethylene glycol from 13.1 C to 40.5C?
Answer:
Q = 4133.2 J
Explanation:
Hello there!
In this case, since these calorimetry problems are based off the following heat equation involving heat (Q), mass (m), specific heat (C) and temperatures (T):
[tex]Q=mC(T_2-T_1)[/tex]
Thus, we plug in the given variables to obtain:
[tex]Q=62.0 g*2.433 \frac{J}{g\°C}* (40.5\°C-13.1\°C)\\\\Q=4133.2J[/tex]
Regards!
How much of a 10 M solution is needed to make 1 liter of a 1M solution?
a. 1ml
b. 1000ml
c. 10ml
d. 100ml
i dont know I hope someone knows soon take care
According to molar concentration, 100 ml of 10 M solution is needed to make 1 liter of a 1 M solution.
What is molar concentration?Molar concentration is defined as a measure by which concentration of chemical substances present in a solution are determined. It is defined in particular reference to solute concentration in a solution . Most commonly used unit for molar concentration is moles/liter.
The molar concentration depends on change in volume of the solution which is mainly due to thermal expansion. Molar concentration is calculated by the formula, molar concentration=mass/ molar mass ×1/volume of solution in liters.
In terms of moles, it's formula is given as molar concentration= number of moles /volume of solution in liters.In case of two solutions, molar concentration is found out by, M₁V₁=M₂V₂.
On substitution in above formula, V₁=1×1/10=0.1 L=100 ml.
Thus, 100 ml of a 10 M solution is needed to make 1 liter of a 1 M solution.
Learn more about molar concentration,here:
https://brainly.com/question/21841645
#SPJ2
If an amine functional group is added to an organic compound, the name of the compound will begin with
Answer for a apple it would be happle
xplanation:
A chemist uses hot hydrogen gas to convert chromium(III) oxide to
pure chromium. How many grams of hydrogen are needed to
convert 76 grams of chromium(III) oxide, Cr203?
Answer: 3.024 g grams of hydrogen are needed to convert 76 grams of chromium(III) oxide, [tex]Cr_{2}O_{3}[/tex]
Explanation:
The reaction equation for given reaction is as follows.
[tex]Cr_{2}O_{3} + 3H_{2} \rightarrow 2Cr + 3H_{2}O[/tex]
Here, 1 mole of [tex]Cr_{2}O_{3}[/tex] reacts with 3 moles of [tex]H_{2}[/tex].
As mass of chromium (III) oxide is given as 76 g and molar mass of chromium (III) oxide [tex](Cr_{2}O_{3})[/tex] is 152 g/mol.
Number of moles is the mass of substance divided by its molar mass. So, moles of [tex]Cr_{2}O_{3}[/tex] is calculated as follows.
[tex]No. of moles = \frac{mass}{molar mass}\\= \frac{76 g}{152 g/mol}\\= 0.5 mol[/tex]
Now, moles of [tex]H_{2}[/tex].given by 0.5 mol of [tex]Cr_{2}O_{3}[/tex] is calculated as follows.
[tex]0.5 mol Cr_{2}O_{3} \times \frac{3 mol H_{2}}{1 mol Cr_{2}O_{3}}\\= 1.5 mol H_{2}[/tex]
As molar mass of [tex]H_{2}[/tex] is 2.016 g/mol. Therefore, mass of [tex]H_{2}[/tex] is calculated as follows.
[tex]No. of moles = \frac{mass}{molar mass}\\1.5 mol = \frac{mass}{2.016 g/mol}\\mass = 3.024 g[/tex]
Thus, we can conclude that 3.024 g grams of hydrogen are needed to convert 76 grams of chromium(III) oxide, [tex]Cr_{2}O_{3}[/tex].
Answer is D
Relatively slow rates of chemical reaction are associated with which characteristic?
A)
High temperature
B)
Low activation energy
C).
The presence of a catalyst
D)
Strong bonds in reactant molecules
Option D : Strong bonds in reactant molecules
The strong bonds in reactant molecules sometimes needs extra energy to weaken the bond and proceed the reaction. Hence, option D is correct.
What is reaction rate ?The rate of a reaction is the rate of decrease in concentration of the reactants or decrease in concentration of the reactants or increase in the concentration of the products.
The minimum energy required to overcome the barrier potential of a reaction is called its activation energy. Hence, lower the activation energy higher will be the reaction rate.
High temperature and presence of catalyst also leads to higher rate. Strong bonds in reactants needs higher energy to weaken the intermolecular force. Thus, slower the reaction rate.
Find more on reaction rate:
https://brainly.com/question/8592296
#SPJ6
The transmission of thermal energy that is caused by the flow of a fluid’s particles. It can only occur with liquids and gases is...
down there (pls hurry!!)
PLEASE HELP ME If a radioactive substance has an initial mass of 50 grams
and its mass halves every 5 years, what is the number of
grams remaining after 20 years?
Answer: [tex]3.125\ g[/tex]
Explanation:
Given
Initial mass [tex]A_o=50\ g[/tex]
half-life is [tex]T_{\frac{1}{2}}=5\ years[/tex]
At any time the left amount is given by
[tex]A=A_o2^{-\dfrac{t}{T_{\frac{1}{2}}}}\\\\\text{Insert the values}\\\\A=50\cdot 2^{-\dfrac{20}{5}}\\\\A=50\cdot 2^{-4}\\\\A=\dfrac{50}{16}\\\\A=3.125\ g[/tex]
How many grams of mercury can be produced if 18.0 g of mercury (11) oxide decomposes?
Answer:
m = 16.67 g of Hg
Explanation:
Let's write the overall decomposition reaction that is taking place:
2HgO ---------> 2Hg + O₂
According to the balanced reaction, we can see that the mole ratio between HgO and Hg is the same (2:2 or 1:1), therefore, we can assume that the moles reactants of HgO would be the moles produced of Hg. So, in order to get the grams of mercury, we need to determine the moles first.
To get the moles, we need to use the following expression:
moles = mass / MM (1)
The molar mass of HgO can be calculated using the atomic weights, which are:
Hg: 200.59 g/mol ; O: 15.999 g/mol
MM HgO = 200.59 + 15.999 = 216.589 g/mol
The moles are:
moles HgO = 18 / 216.589 = 0.0831 moles
As we stated before, moles reactants are the same moles produced, so:
moles HgO = moles Hg = 0.0831 moles of Hg.
Finally, to get the mass, we just solve the mass from (1):
m = moles * MM (2)
m = 0.0831 * 200.59
m = 16.67 g of HgHope this helps
How is stoichiometry used to calculate energy absorbed when a mass of
solid melts?
O A. Grams solid x mol/g * A Hreaction
B. Grams solid x mol/g * A Hp
C. Grams solid x mol/g * A Hfusion
O D. Grams solid x mol/g * A Hvap
Answer: Option C is correct
Grams solid x mol/g * A Hfusion
Explanation:
This is because from fusion is associated to melting and this is a process where solid particles or substances goes through transition phase and turn to liquid.
There for the stoichiometry is used to calculate energy absorbed when solid mass melt with the formula Grams solid x mol/g * A Hfusion.
PLEASE HELP ME :(((
What is the relative size and composition of the universe, a galaxy, and a solar system?
Answer:
about 93 billion light years
Explanation:
The observable Universe is, of course, much larger. According to current thinking it is about 93 billion light years in diameter.
Answer:
93 miles
Explanation: We can determine the distance to the sun using the time light takes to get to Earth. Just multiply the speed of light by the amount of time it takes light to get to Earth. That's 500 seconds.
186,282 miles per second x 500 seconds = 93,141,000 miles
The sun is about 93 million miles away from Earth. It will take our fastest space shuttle moving at a constant maximum speed about 108 days to travel this same distance.
If 200 mL of a gas at 27 °C is cooled to -33 °C at a constant pressure, the volume will be
Answer:
V2 = 159.48 mL
Explanation:
Given the following data;
Initial volume = 200 mL
Initial temperature = 28°C
Final temperature = -33°C
To find the final volume, V2, we would use Charles law;
First of all, we would convert the temperature in Celsius to Kelvin.
Mathematically, it is given by the formula;
Kelvin = 273 + C
Substituting into the equation, we have;
Initial temperature, T1:
Kelvin = 273 + 28
Kelvin = 301K
Initial temperature, T1:
Kelvin = 273 - 33
Kelvin = 240K
To find new volume V2, we would use Charles' law.
Charles states that when the pressure of an ideal gas is kept constant, the volume of the gas is directly proportional to the absolute temperature of the gas.
Mathematically, Charles is given by;
[tex] VT = K[/tex]
[tex] \frac{V_{1}}{T_{1}} = \frac{V_{2}}{T_{2}}[/tex]
Where;
V1 and V2 represents the initial and final volumes respectively.
T1 and T2 represents the initial and final temperatures respectively.
[tex] \frac{V1}{T1} = \frac{V2}{T2}[/tex]
Making V2 as the subject formula, we have;
[tex] V_{2}= \frac{V1}{T1} * T_{2}[/tex]
[tex] V_{2}= \frac{200}{301} * 240[/tex]
[tex] V_{2}= 0.6645 * 240 [/tex]
V2 = 159.48 mL
If some salt were accidently spilled as it was transferred from the balance to the cup would your calculated enthalpy of solution of the salt be too high or too low
Answer:
It would be to low
Explanation:
If some salt were accidently spilled as it was transferred from balance to cup calculated enthalpy of solution of salt be too low as there will be loss in mass which would lead less solubility of salt and hence less enthalpy.
What is solubility?Solubility is defined as the ability of a substance which is basically solute to form a solution with another substance. There is an extent to which a substance is soluble in a particular solvent. This is generally measured as the concentration of a solute present in a saturated solution.
The solubility mainly depends on the composition of solute and solvent ,its pH and presence of other dissolved substance. It is also dependent on temperature and pressure which is maintained.Concept of solubility is not valid for chemical reactions which are irreversible. The dependency of solubility on various factors is due to interactions between the particles, molecule or ions.
Learn more about solubility,here:
https://brainly.com/question/29589228
#SPJ5
Which part of an organism is LEAST likely to form a fossil?
A. skin
B. tooth
C. bone
D. shell
Answer:
[tex]\huge \fbox \pink {A}\huge \fbox \green {n}\huge \fbox \blue {s}\huge \fbox \red {w}\huge \fbox \purple {e}\huge \fbox \orange {r}[/tex]
A. Skin
Explanation:
Skin unlike teeth, bones & shells is fragile & get decomposed easily under the soil.
Answer:
um a I think because when you look at dinosaur you don't see their skin anymore just like the bones and teeth
Balance the following equations.
Answer:
A) Mg + H2SO4 → MgSO4 + H2
B) CaCO3 + 2HCl → CaCl2 + H2O + CO2
C) CaO + H2O → Ca(OH)2
D) 3Ag + 4HNO3 → 3AgNO3 + H2O + NO2
Explanation:
A) Mg + H2SO4 → MgSO4 + H2
The equation is already balanced because the number of each element in the left hand side is already equal to that in the right hand side.
B) CaCO3 + 2HCl → CaCl2 + H2O + CO2
This equation is balanced by putting 2 in front of HCl on the left hand side to balance the elements on the right hand side.
C) CaO + H2O → Ca(OH)2
Thus equation is already balanced because the number of each element in the left hand side is already equal to that in the right hand side.
D) 3Ag + 4HNO3 → 3AgNO3 + H2O + NO2
This equation is balanced by putting 3 in front of Ag and 4 in front of HNO3 on the left hand side while we put 3 in front of AgNO3 on the right side to balance the elements on the right hand side.
3. a. How many moles of NaCl are dissolved in 152 mL of a solution if the concentration of the solution is 0.364 M?
Answer:
Good luck man
Explanation:
Good luck man
What is the molarity of a Ba(OH)2 solution if 93.9 mL is completely titrated by 15.3 mL of 0.247 M H2SO4?
show work please!! i am not 100 percent sure how to do this so i would like to see steps if possible
Answer:
0.04 M.
Explanation:
We'll begin by writing the balanced equation for the reaction. This is illustrated below:
Ba(OH)₂ + H₂SO₄ —> BaSO₄ + 2H₂O
From the balanced equation above,
The mole ratio of acid, H₂SO₄ (nₐ) = 1
The mole ratio of base, Ba(OH)₂ (n₆) = 1
Finally, we shall determine the molarity of Ba(OH)₂ solution. This can be obtained as follow:
Volume of base, Ba(OH)₂ (V₆) = 93.9 mL
Volume of acid, H₂SO₄ (Vₐ) = 15.3 mL
Molarity of acid, H₂SO₄ (Mₐ) = 0.247 M
Molarity of base, Ba(OH)₂ (M₆) =?
MₐVₐ / M₆V₆ = nₐ / n₆
0.247 × 15.3 / M₆ × 93.9 = 1/1
3.7791 / M₆ × 93.9 = 1
Cross multiply
M₆ × 93.9 = 3.7791
Divide both side by 93.9
M₆ = 3.7791 / 93.9
M₆ = 0.04 M
Therefore, the molarity of the Ba(OH)₂ solution is 0.04 M
As the earth rotates on its axis, the constellations and stars in them appear to
During a combustion reaction, 9.00 grams of oxygen reacted with 3.00 grams of CH4.
What is the amount of the leftover reactant?
0.74 grams of methane
0.89 grams of methane
1.22 grams of oxygen
1.45 grams of oxygen
Answer:
0.74
Explanation:
this is the correct answer. I followed a correct answer that had the same probelm with different values, swithxed it with mine, and got 0.75. So its basically 0.74
The VSEPR model is used mainly to do what