Answer:
0.92322835
Explanation:
0.92322835 rounded= 0.9 or 0.92
2.345 centimeters cubed is equal to 0.1431 inches cubed.
Units of volume are used to measure the amount of space occupied by an object or substance. Volume is a three-dimensional quantity and is typically expressed in cubic units. Some common units of volume include:
Cubic Meter (m³): This is the SI unit of volume and represents the volume of a cube with sides measuring one meter.Cubic Centimeter (cm³): This is a smaller unit of volume often used for measuring the volume of small objects or substances. It is equal to the volume of a cube with sides measuring one centimeter.Liter (L): The liter is a commonly used unit of volume in everyday life. It is equal to one cubic decimeter or 1,000 cubic centimeters.Milliliter (mL): The milliliter is a smaller unit of volume often used for measuring liquids or small quantities. It is equal to one-thousandth of a liter or one cubic centimeter.Other units of volume, such as gallons, cubic feet, and ounces, are also used in specific contexts or regions. It is important to use appropriate conversion factors when converting between different units of volume.
1 inch = 2.54 cm.
1 cm = 1/2.54 inches
(1 cm)³ = (1/2.54 inches)³
1 cm³ = (1/2.54)³ inches³
2.345 cm³ = 2.345 × [(1/2.54)³] inches³
2.345 cm³ ≈ 0.1431 inches³ (rounded to four decimal places)
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You are making a temperature measurement with a lab thermometer. The increments (markings) are 1°C. You see that the temperature is about 1/3 of the way from 21°C to 22°C. How would you record this temperature? How many significant figures does it have? In what place value is the smallest certain digit? In what place value (tens, ones, tenths, etc.) is the uncertain digit?
Answer: 21.3, 3 sig figs, units certain, tenths uncertain
Explanation:
The temperature is 21.3 degrees Celsius, This temperature has 3 significant figures. The smallest certain digit is in the tenth place and the uncertain digit is in the decimal place.
What are significant figures?
The number that is given as digits is established using significant figures. A meaningful representation of numbers is carried by these digits. Frequently, significant numbers are employed in place of figures. By counting all of the values beginning with the first non-zero digit on the left, we may determine the number of significant digits. 12.45, for instance, contains four significant numbers.
Therefore, in the above observation, the temperature is 21.3 degrees Celsius, This temperature has 3 significant figures. The smallest certain digit is in the tenth place and the uncertain digit is in the decimal place.
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Please help me i am very lost
Calculate the salinity of the liquids in the table. Round your answers to one decimal place.
$\frac{\text{mass of salt}\left(g\right)}{\text{mass of solution}\left(g\right)}\times1000=salinity\left(ppt\right)$mass of salt(g)mass of solution(g) ×1000=salinity(ppt)
Sample Solution Mass of Salt (g) Mass of Solution (g) Salinity (ppt)
A
27
1000
B
15
850
C
94
2355
D
11
3796
Answer:
i think that's number D.
CuBr(s)⇄Cu+(aq)+Br−(aq)
Shown above is the chemical equation for the dissolution of the slightly soluble salt CuBr(s). Its Ksp value in pure water was experimentally determined. CuBr was found to be much less soluble in a 0.001MNaBr solution than in pure water. Which of the following correctly explains the decrease in solubility of CuBr in 0.001 M NaBr?
A.)The concentration of water is much less in the NaBr solution than in pure water, reducing the rate of dissolution of the salt.
B.)The presence of Na+ ions in the solution inhibits the dissolution of salts.
C.)The presence of additional Br− already in the solution decreases the value of the Ksp for CuBr , causing the solubility to decrease.
D.)The presence of additional Br− ions already in the solution means equilibrium will be reached when much less CuBr has dissolved.
Answer:
D) The presence of additional Br- ions already in the solution means equilibrium will be reached when much less CuBr has dissolved.
Explanation:
CuBr ⇄ [tex]Cu^+[/tex] + [tex]Br^-[/tex]
Because there is Br- in CuBr, when put into solution, those Br- ions become part of the products side of the equation, shifting the equilibrium back towards the CuBr side, meaning less CuBr will dissolve.
The decrease in the solubility of the CuBr in NaBr solution has been due to the presence of additional Br ions in the solution. Thus option C is correct.
The equilibrium position has been the condition when the concentration of the reactants and products has been equal. The solubility of the CuBr has been dependent on the ksp for the solution.
The ksp has been the solubility product and has been dependent on the concentration of the reactants. The NaBr solution will be dissociated in the form of Na ions and Br ions. The dissolution has been based on the equilibrium of the CuBr.
With the presence of additional Br ions, the equilibrium of the CuBr solution has been reached earlier, and thereby the solubility of the solution has been decreased.
The decrease in the solubility of the CuBr in NaBr solution has been due to the presence of additional Br ions in the solution. Thus option C is correct.
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Why can a solution be classified as a mixture?
Both are always homogeneous.
It is made up of only one substance.
Both are made up of two substances that are not chemically combined.
Both are made up of two substances that are chemically combined.
Answer:
Both are made up of two substances that are not chemically combined.
Explanation:
Solutions can be classified as a mixture because both are made up of two substances that are not chemically combined.
A mixture is made up of the following properties:
They have an indefinite composition. Their constituents retain their physical properties. They can easily be separated into their physical constituents.Solutions share this property with all mixtures.
The constituent of a solution are not chemically combined or bonded together
Answer:
c
Explanation:
I go to k12 (or you) If you go to k12 this is correct
PLEASE HELP
What heat transfer is a Heater.
Answer:
All electric heaters make use of one or more of the fundamental heat transfer mechanisms – namely convection, conduction, or radiation.
For regular...
Conduction is heat transfer by direct contact, like frying an egg. Convection is heat transfer by the movement of gases or liquids, like most home furnaces, clothes dryers, or car heaters. Radiation is the transfer of heat in waves through space, like the sun or a fire.
how many oxygen atoms are in 1 mol of CO2
Answer: 2 atoms
Explanation: A molecular formula of the compound carbon dioxide is CO 2 . One molecule of carbon dioxide consists of 1 atom of carbon and 2 atoms of oxygen.
Which of the following is not a chemical change?
a. paper being shredded
b. steel rusting
c. charcoal burning
d. a newspaper yellowing in the sun
Answer:
paper being shredded
Explanation:
Answer:
its A
Explanation:
What is the air we breathe composed of?
Answer:
oxygen
Explanation:
The average weather conditions affecting a biome is called ____.
precipitation
tundra
temperate condition
Climate
H2o is initially present in a state where its molecules are far apart. During a change of state, its molecules slow down. Which change of state has most likely taken place?
from a gas to a liquid
from a liquid to a gas
from a solid to a liquid
from a gas to a plasma
Answer: from a gas to a liquid
Explanation:
The change of state that has most likely taken place is from a gas to a liquid, where the molecules slow down and move closer together due to a decrease in temperature or an increase in pressure.
What are states of matter?Matter is anything that occupies space and has mass. The three fundamental states of matter are solid, liquid, and gas. Solids have a definite shape and volume, with tightly packed molecules that vibrate in place. Liquids have a definite volume but no definite shape, with molecules that can slide past one another.
Gases have neither a definite shape nor a definite volume, with molecules that are widely separated and move freely in all directions. A fourth state of matter, plasma, also exists and is formed at extremely high temperatures or by ionizing a gas. In plasma, electrons have separated from their nuclei to form a cloud of charged particles.
Other, more exotic states of matter have also been observed under extreme conditions, such as Bose-Einstein condensates and quark-gluon plasma.
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Polar air masses bring warm temperature and have lower air temperature? T or F
Answer:
t? im pretty sure have a good day
Are theories always Correct?
Answer:
no, theories are not always correct
the mass of 0.0321 moles of Ca (CN)2
The mass of Ca(CN)2 : 92,11 g/mol
Further explanationGiven
0.0321 moles of Ca(CN)2
Required
The mass
Solution
The mole is the number of particles contained in a substance
1 mol = 6.02.10²³
Moles can also be determined from the amount of substance mass and its molar mass
mol(n) = mass(m) : MW(molecular weight)
Input the value :
mass = mol x MW Ca (CN)2
mass = 0.0321 x 92,11 g/mol
mass = 2.957 g
In Raoult’s law, what happens to the partial pressure of the solution when the mole fraction of the solvent increases?
Answer: c. it increases
Explanation:
when a liquid is cooled the kinetic energy of the particles a)decrease b) increase c) stay the same
Answer:
a) decrease
Explanation:
Hope this will help
Focus Question
Q: How can you light two
bulbs brightly with one D-
cell?
PLEASE HELP!
Answer:
A D-cell is a source of electric energy. A bulb is an energy receiver that produces light. To make a complete circuit, electricity must travel in a circle from one end of the battery to the other.
Explanation:
Different energy sources can be used to generate electricity. Which of the following uses a nonrenewable energy source to generate electricity?
a hydroelectric power plant
a generator that burns wood
a power plant that runs on oil
a windmill connected to a generator
Answer:
a power plant that runs on oil
Explanation:
A generator a power plant that runs on oil uses non-renewable sources of energy to generate electricity.
Non - renewable energy is an energy source that cannot be replenished within a short period of time. It takes geologic time scales to form such energy sources.
Oil is a fossil fuel and a non-renewable source of energy.
As it is used, the reserve is being depleted.
Answer:
a power plant that runs on oil
Section
1
2
7)
Given the equation representing a reaction:
203Pb + 5921 TECn + on
3
4
5
Which type of reaction is represented by this equation?
6
A)
neutralization
8
-9
B)
polymerization
C)
substitution
10
11
12
13
= 14
- 15
16
-17
D)
transmutation
18
19
20
21
Answer:
a
Explanation:
neutalize acidity level
Which of the following chemical formulas show three molecules of a compound that has one
NEED FAST
atom of mercury and two atoms of bromine
1. 3Mc2Br
2. Hg3Br2
3. 3McBr2
4.McBr23
5.3HgBr2
6.3Hg2Br
The chemical formula : 3HgBr₂(Mercury(II) bromide)
Further explanationGiven
The chemical formulas of Mercury and Bromine
Required
The appropriate chemical formula
Solution
A molecular formula is a formula that shows the number of atomic elements that make up a compound.
The number of molecules is determined by the coefficient in front of the compound
the number of atoms is determined by the subscript after the atom and the coefficient
Three molecules⇒ coefficient = 3
one atom of Mercury ⇒Hg
two atoms of Bromine ⇒ Br₂
The chemical formula : 3HgBr₂
8. The size and shape of an object are some of its....
Answer:
Characteristics...
Explanation:
I hope that's right, if not super sorry. I'm not the smartest. I tried my best if it's wrong
A patient is having trouble chewing their food, so the doctor orders a mechanical soft diet. As the dietician, you prepare a lunch for the patient. It includes chicken salad. What is the total caloric intake for a serving of chicken salad if each serving contains 2.2 g fat, 3.7 g carbohydrates, and 17 g protein (answer in Calories, kcal)?
chemical equation for cycloheptane (l)
Answer: C7H14 - PubChem.
Explanation:
How many moles of iron (Fe) will be produced from 6.20 moles of carbon monoxide (CO) reacting with excess iron (III) oxide (Fe2O3)?
If you can, please show the work because I really don't understand and ya girl is struggling. thank you guysss <33
Answer:
4.13 moles of Fe
Explanation:
Step 1: Write the balanced equation
3 CO + Fe₂O₃ ⇒ 2 Fe + 3 CO₂
Step 2: Establish the appropriate molar ratio
According to the balanced equation, the molar ratio of CO to Fe is 3:2.
Step 3: Calculate the moles of Fe formed from 6.20 moles of CO
We will use the previously established molar ratio.
6.20 mol CO × 2 mol Fe/3 mol CO = 4.13 mol Fe
WILL GIVE BRAINLIEST
at which distance from refrigerator door would a magnetic force of attraction be weakest
A 7cm
B 3cm
C 1cm
D 10cm
Answer:
10 cm
Explanation:
because the magnetic force of attraction becomes weaker from a greater distance.
Answer:
D 10cm
Explanation:
As the distance between the two objects(magnet and Ferromagnetic Metals and Alloys) increases the magnetic for will decrease
if a iron nail is kept 1cm far from a magnet then the magnet will atract it easily but if the same iron nail is kep 3cm far from the magnet then the magnet won't attract it easily .
(Ferromagnetic materials such as iron, nickel and cobalt are attracted to magnets, as well as rare-earth metals like gadolinium, neodymium and samarium.)
Hope you've understood
53.0 g of silver (1) nitrate reacts according to the reaction shown below:
AgNO3 + KCI — AGCI + KNO3
Find the theoretical yield of AgCl. If the amount of AgCl actually produced is 38.5 grams,
what is the percent yield of the experiment?
Answer:
Percent yield = 86.09%
Theoretical yield of AgCl = 44.72 g
Explanation:
Given data:
Mass of silver(1) nitrate = 53.0 g
Actual yield of AgCl = 38.5 g
Theoretical yield of AgCl = ?
Percent yield = ?
Solution:
Chemical equation:
AgNO₃ + KCl → AgCl + KNO₃
Number of moles of AgNO₃:
Number of moles = mass/molar mass
Number of moles = 53.0 g/ 169.87 g/mol
Number of moles = 0.312 mol
now we will compare the moles of AgNO₃ and AgCl
AgNO₃ : AgCl
1 : 1
0.312 : 0.312
Theoretical yield of AgCl:
Mass = number of moles × molar mass
Mass = 0.312 mol × 143.32 g/mol
Mass = 44.72 g
Percent yield:
Percent yield = (actual yield / theoretical yield) × 100
Percent yield = ( 38.5 g / 44.72 g ) × 100
Percent yield = 86.09%
Close friendships at work are often bad for the business. true or false and why?
Explanation:
true true true true true true
Answer:
False
Explanation:
Because that is your friend and your friend is helping you in other things that you need some help.
helpppp nowww plsss!!
Answer:
Solar energy.
Explanation:
Solar Energy,
Renewable sources are those, which can be used again and again so, solar energy is the answer.
At what temperature in Kelvin will 0.1243 moles of fluorine exert a pressure of 2.02 atm at a volume of
0.625 L? Answer: 124K
How do I solve this?
Answer:
Explanation:
The formula would be PV=nRT but since were trying to find temp. the formula becomes T=PV/nR (n is the # moles and R is the ideal gas constant which equals 0.0821 for this)
The formula becomes T= 2.02 x 0.625 divided by 0.1243 x 0.0821 then just solve that in the calculator and u get 123.7K or 124K
How often is Earth's surface being changed?
1 every hundred years
2 never
3 at all times
4 once a year
Answer:
I believe it is 3.
Explanation:
because the earth is constantly shifting.
5. Identify each of the following as an element, a mixture, or a compound.
a. aluminum foil
b. air
C. water
d. salt water
e. copper
wire
f. steel
Answer:
Aluminum foil ~ element
Air ~ mixture
Water ~ compound
Salt Water ~ mixture
Copper Wire ~ element
Steel ~ element