Answer:
79.04 L
Explanation:
We are given;
Initial Volume; V1 = 6.24L
Initial Pressure; P1 = 760 mm Hg
Final pressure; P2 = 60.0mm Hg
To solve for final volume, we will use Boyles law;
P1•V1 = P2•V2
Let's make V2 which is the final volume the subject;
V2 = (P1•V1)/P2
V2 = (760 × 6.24)/60
V2 = 79.04 L
At which temperature would the
substance be found in its solid state
A.
B.
C.
D.
-10 °C
0 °C
-1 °C
60 °C
(PLEASE HELP 20 POINTS ON A TEST)
4.2 moles of an unknown gas at a pressure of 5.5 atm has a volume of 12.0 L.
What is the temperature?
Answer:
191.4K
Explanation:
Using the ideal gas law equation as follows:
PV = nRT
Where;
P = pressure (atm)
V = volume (L)
n = number of moles (mol)
R = gas law constant (0.0821 Latm/molK)
T = temperature (K)
According to the information provided in this question:
n = 4.2moles
P = 5.5atm
V = 12.0 L
T = ?
Using PV = nRT
5.5 × 12 = 4.2 × 0.0821 × T
66 = 0.345 T
T = 66/0.345
T = 191.4K
Which of the following is an ionic compound?
(A) CO₂
B) NH3
C) KBr
D) C12
Answer:
co2
Explanation:
it is an ionic compound
A change in the internal energy of a system at constant pressure from a chemical reaction will result in an identical change in the -
Answer:
1
Explanation:
Answer:
Option D ( Enthalpy of the System)
Explanation:
The relationship between the change in the internal energy of the system during a chemical reaction and the enthalpy of reaction can be summarized as follows. ... The heat given off or absorbed when a reaction is run at constant pressure is equal to the change in the enthalpy of the system.
Hope This Helps And if Not Then Im Sorry...
definition of all these plzz
Ulcers
Anemia
Diabetes
Anorexia
Bulimia
Cholesterol
Pacemaker
Endoscope
Stethoscope
Kidney dialysis
Protein
Carbohydrate
Fats
Fruits and vegetables
Answer:
I got 1 ulcers definition. an open score on an external
How does radon move up through rock and soil?
What is the pH of a 3 x 10-4 M solution of HNO3?
Answer:
3.52
Explanation:
-log(3 x 10^-4) = 3.52
Canal rays was the first name given to what?
Matter takes up _____.
(a) Space and temperature
(b) Space and heat
(c) Space and mass
(d) Heat and temperature
What is force of friction ?
[tex] \huge{\textsf{➼ MissJ0Y}} [/tex]
Answer:
Frictional force takes place when 2 object rub against each other
Explanation:
For example:- Ball rolling on the floor (How is the ball moving?... Due to friction)
The_____gland controls your body's metabolism
Answer:
thyroid gland
Explanation:
Thyroid gland
measures approximately two inches and has a shape similar to a butterfly. It secretes hormones that affect virtually every tissue in your body. Thyroid hormones regulate your metabolism, heart, and digestive function.
The [tex]\sf\purple{thyroid}[/tex] gland controls your body's metabolism.
Explanation:
The thyroid gland plays an important role in the metabolism, growth and development of the human body.
[tex]\circ \: \: { \underline{ \boxed{ \sf{ \color{green}{Happy\:learning.}}}}}∘[/tex]
7. A sample of methane gas (CH.) with a mass of 58 g is kept in a 1500 mL container at a temperature of 100. °C. What is the pressure of the gas?
Answer:
c i took the text
Explanation:
__AgNO3 + __Cu → __Ag + __Cu(NO3)2
The complete question is: Fill the blanks with appropriate coefficient number for the reaction equation- __AgNO3 + __Cu → __Ag + __Cu(NO3)2
Answer: The complete reaction equation is [tex]AgNO_{3} + Cu \rightarrow Ag + Cu(NO_{3})_{2}[/tex]
Explanation:
A chemical equation which contains same number of atoms on both reactant and product side is called a balanced chemical equation.
For example, [tex]AgNO_{3} + Cu \rightarrow Ag + Cu(NO_{3})_{2}[/tex]
Here, number of atoms present on reactant side is as follows.
Ag = 1[tex]NO_{3}[/tex] = 1Cu = 1Number of atoms present on product side is as follows.
Ag = 1[tex]NO_{3}[/tex] = 2Cu = 1To balance this equation, multiply [tex]AgNO_{3}[/tex] by 2 on reactant side and multiply Ag by 2 on product side. Hence, the equation can be re-written as follows.
[tex]2AgNO_{3} + Cu \rightarrow 2Ag + Cu(NO_{3})_{2}[/tex]
Now, the number of atoms present on reactant side are as follows.
Ag = 2[tex]NO_{3}[/tex] = 2Cu = 1Number of atoms present on product side are as follows.
Ag = 2[tex]NO_{3}[/tex] = 2Cu = 1Thus, we can conclude that the complete reaction equation is [tex]AgNO_{3} + Cu \rightarrow Ag + Cu(NO_{3})_{2}[/tex].
The number of significant figures in 7,000,000.0
Answer:
there are 6
Explanation:
The decimal 0 doesn't count as an SF because there is no point for it.
Who is known as the "father of modern chemistry” because he first organized all known elements into four different groups?
Johann Wolfgang Döbereiner
Antoine Lavoisier
Dmitri Mendeleev
Henry Moseley
Antoine Lavoisier is known as the "father of modern chemistry” because he first organized all known elements into four different groups.
Antoine Lavoisier made many different and important discoveries in chemistry. He also established water as combination of Hydrogen and Oxygen and that is the very basic beginning of chemistry. The contemporary naming system for chemical compounds is also invented by him. Modern system of chemical nomenclature was the first co-authored by Antoine Lavoisier. He also formulated the law of conservation of mass in chemistry. He has been known as the "Father of Modern Chemistry" because of his brilliant and most important impacts on the history of chemistry.
Therefore, Antoine Lavoisier is known as the "father of modern chemistry” because he first organized all known elements into four different groups.
To learn more about Antoine Lavoisier click:
https://brainly.com/question/11429078
#SPJ7
The actual yield of a chemical reaction is generally
Answer:
The actual yield of a chemical reaction is generally theorotical yield.
Answer:
The amount of product generated by a chemical reaction is its actual yield. This yield is often less than the amount of product predicted by the stoichiometry of the balanced chemical equation representing the reaction (its theoretical yield).
Why do nurses need to understand chemistry?
A. Chemistry helps them understand how medicines work.
B. Chemistry helps them keep accurate health records.
C. Chemistry helps them understand how germs transmit disease.
D. Chemistry helps them learn the parts of the body.
I have a exam please answer fast
Answer:
C
[tex] \triangle \: H {}^{ \theta} _{s} = lattice \: energy + hydration \: energy \\ = + 2526 + ( - 2003 + (2 \times - 340)) \\ + 2526 - 2683 \\ = - 157 \: kjmol {}^{ - 1} [/tex]
Which area of chemistry best links the use of titanium and plastics in artificial bone and joint replacements?
The question is incomplete, the complete question is;
Which area of chemistry best links the use of titanium and plastics in artificial bone and joint replacements? A) environmental chemistry
B) materials chemistry
C) agricultural chemistry
D) physical chemistry
Answer:
materials chemistry
Explanation:
Chemistry is the study of the nature of matter as well as the interaction between the particles that compose matter.
There are several branches of chemistry such as;
Physical chemistry
Organic chemistry
Biochemistry
Polymer chemistry and so on.
Materials chemistry is that branch of chemistry that deals with the design and production of diverse materials which can be used for various purposes.
Hence, the area of chemistry which best links the use of titanium and plastics in artificial bone and joint replacements is materials chemistry.
Answer:
B
Explanation:
took the test
a 0.5 mol sample of N2 is in a 6L container at 2 atm. what is the temperature of the gas in K
Answer:
300 K
General Formulas and Concepts:
Atomic Structure
Diatomic ElementsMolesGas Laws
Ideal Gas Law: PV = nRT
P is pressureV is volumen is molesR is gas constantT is temperatureExplanation:
Step 1: Define
Identify variables
[Given] n = 0.5 mol N₂
[Given] V = 6 L
[Given] P = 2 atm
[Given] R = 0.0821 L · atm · mol⁻¹ · K⁻¹
[Solve] T
Step 2: Solve for T
Substitute in variables [Ideal Gas Law]: (2 atm)(6 L) = (0.5 mol)(0.0821 L · atm · mol⁻¹ · K⁻¹)TMultiply [Cancel out units]: 12 atm · L = (0.04105 L · atm · K⁻¹)TIsolate T [Cancel out units]: 292.326 K = TRewrite: T = 292.326 KStep 3: Check
Follow sig fig rules and round. We are given 1 sig fig as our lowest.
292.326 K ≈ 300 K
Calculate the total amount of energy required in calories to convert 50.0 g of ice at 0.00 degrees Celsius to steam at 100. degrees Celsius.
Specific heat capacity of water is 1.00 cal/g OC
Hfusion = 80 cal/g OC and Hvap = 540 cal/g OC
Write the complete equation you will use. 1 point
Substitute the values in the equation in step 1. 1 point
Report the math answer with 3 sig figs and the correct unit. 1 point
Answer:
HFusion*mass + Spec.Heat*mass*ΔT + HVap*mass
80cal/g*50.0g + 1.00cal/g°C*50.0g*(100°C-0°C) + 540cal/g*50g
3.60x10⁵cal
Explanation:
Using the HFusion we can find the heat needed to convert the ice to liquid water.
With specific heat capacity we can find the heat needed to increase the temperature of water from 0 to 100°C.
With HVap we can find the heat to convert the liquid water into steam.
The equations are:
HFusion*mass + Spec.Heat*mass*ΔT + HVap*massComputing the values:
80cal/g*50.0g + 1.00cal/g°C*50.0g*(100°C-0°C) + 540cal/g*50g36000cal =
3.60x10⁵calCan anyone help me solving this
Answer:
Option C. C₃H₆O₃
Explanation:
From the question given above, the following data were obtained:
Empirical formula = CH₂O
Molecular mass = 90 g/mol
Molecular formula =?
The molecular formula of the compound can be obtained as follow:
Molecular formula = Empirical formula × n
Molecular formula = [CH₂O]ₙ
But
Molecular formula = molecular mass = 90
Therefore,
[CH₂O]ₙ = 90
Now, we shall determine the value of n in order to obtain the molecular formula of the compound.
[CH₂O]ₙ = 90
[12 + (2×1) + 16]n = 90
[12 + 2 + 16]n = 90
30n = 90
Divide both side by 30
n = 90/30
n = 3
Molecular formula = [CH₂O]ₙ
Molecular formula = [CH₂O]₃
Molecular formula = C₃H₆O₃
where does an element take its identity from?
Answer:
It gets its identity from tiny particles: positively charged protons in the nucleus, balanced by negatively charged electrons all around, plus neutrons, which have no charge at all.
An element takes its identity from its atomic number, which is the number of protons in the nucleus of its atoms.
Each element has a unique atomic number, and this number determines the element's chemical and physical properties.
For example, the atomic number of Carbon is 6, which means that all carbon atoms have 6 protons in their nuclei. This unique number of protons gives carbon its characteristic chemical and physical properties, such as its ability to form covalent bonds with other atoms.
Therefore, an element's identity is determined by its atomic number, which is the number of protons in an atom's nucleus.
Learn more about elements here:
https://brainly.com/question/24407115
#SPJ6
Look at the activity series and select which two of the following reactions would happen on their own. (Remember, if the lone element is more active than the metal in the compound, the lone element will react and replace the metal in the compound.) Lithium (Li)
Potassium (K)
Calcium (Ca)
Sodium (Na)
Aluminum (Al)
Zinc (Zn)
Iron (Fe)
Tin (Sn)
Lead (Pb)
(Hydrogen) (H)
Copper (Cu)
Silver (Ag)
Gold (Au)
A.
2Li + ZnBr2 ->2LiBr + Zn
B.
Al + 3LiCl ->AlCl3 + 3Li
C.
Sn + ZnSe ->SnSe + Zn
D.
3Ca + Al2O3 ->2Al + 3CaO
Answer:
2Li + ZnBr2 ->2LiBr + Zn
3Ca + Al2O3 ->2Al + 3CaO
Explanation:
Spontaneous reactions are reactions that can happen on their own. For a spontaneous reaction to occur, a metal that is higher in the activity series must displace a metal that is lower in the activity series from its solution and not vice versa.
If we look at the two reactions selected in the answer, lithium is above zinc in the activity series and calcium is above aluminum in the activity series hence the two reactions occur spontaneously.
What plate forms a boundary with the African plate
Answer:
The Eurasian plate(another major plate), the Aegean sea plate and the Anatolian plate share the north border. The Antarctic plate that contributes to the south of the African plate, is also a major plate.
PLZ HELP!!! What mass of [tex]SrF_{2}[/tex] can be prepared from the reaction of 10.0g [tex]Sr(OH)_{2}[/tex] with excess HF? THANK U!!
Answer:
Approximately 10.5g or 10.4g [tex]SrF_{2}[/tex]
Does a reaction involving an acid and a base have to take place in a water environment? Justify your answer.
Answer:
YES!!!
Explanation:
Strong acids and strong bases are both strong electrolytes. In contrast, only a fraction of the molecules of weak acids and weak bases react with water to produce ions, so weak acids and weak bases are also weak electrolytes.
Which of these is not a mixture?
A) Salt
B) Cooking oil
C) Tea leaves
D) Milk
ty
Answer:
the answer is salt because it has a uniform and definite composition
Explanation:
What is the volume of 2.66 x 10^23 molecules of N2 gas at STP? PLEASE ANSWER WITH WORK! ILL GIVE BRAINLIEST
Answer:
1100L.
Explanation:
Which substances in the diagram are most unstable? positive values of enthalpy negative values of enthalpy negative values -50 to -100 values near zero
Answer:
Positive values of Enthalpy
Explanation:
Got it right on Odessyware. Have a nice day!!!
PLEASE give me Brainliest
