Answer:
i let alone need more time to figure this out and i will get you the awnser.
Explanation:
Please I need the answer asap
The specific heat of water is 4.184 J/g·K. How much energy must be added to 100.0 g of water to raise the temperature of water from 22.0 ºC to 90.0 ºC?
a. 2.84 kJ
b. 136 J
c. 28.4 kJ
d. 6800 J
The energy needed to raise the temperature of water from 22.0ºC to 90.0ºC is c. 28.4 kJ.
What is specific heat?The amount of energy needed to raise the temperature of one gram of a substance by one degree Celsius.
By the formula [tex]Q = mc\Delta T[/tex]
Q is the heat
m is the mass
c is the specific heat
Now, c = 4.184 J/g.K
The change in temperature is 22.0 ºC to 90.0 ºC
Putting the value in the equation
[tex]Q = 100 \times 4.184 \times (90.0 - 22.0)\\\\Q = 4.184 \times 68.0\\ \\Q= 284.5 \;J[/tex]
Thus, the energy needed to raise the temperature of water from 22.0ºC to 90.0ºC is 28.4 kJ
Learn more about specific heat
https://brainly.com/question/11297584
#SPJ1
Please help me!
Q1) heating materials
Q2) heat capacity specheat
What volume of 1/5 M and 1/8 M HCl solution must be mixed to obtain 3 L of 1/7 M HCl?
0.72 L and 2.28 L of 1/5 M and 1/8 M HCl solution are required respectively to obtain 3 L of 1/7 M HCl.
What is the concentration of a solution?The concentration of a solution is the amount of substance a given volume of the solution of that substance.
The final concentration and volume of the mixture is 3 L of 1/7 M HCl.
Let the volume of 1/5 M and 1/8 M HCl solution required be X and Y respectively.
X + Y = 3 L
Liters of y = 3 -
[.0.2 X + 0.125 * (3-X)] / 3 = 1/7
(0.2X + 0.375 - 0.125X) / 3 = 1/7
(0.075 X / 3) = 1/7 - 0.375/3
(0.075X / 3) = 0.018
Multiplying both sides by 3
0.075 X = 0.054
X = 0.72 L
Y = 2.28 L
Therefore, 0.72 L and 2.28 L of 1/5 M and 1/8 M HCl solution are required respectively.
Learn more about concentration at: https://brainly.com/question/24595796
8.5743 g of pure sample of Tmx(SO4)y produces2.6322 g of SO2. Determine the molecular formula and the name of the unknown thulium compound.
The name of the compound is thulium (iii) sulfate and it's molecular formula is:
[tex]Tm_2(SO_4)_3[/tex]
What is the molecular formula of the unknown compound?The molecular formula of a compound is the formula showing the ratio in which atoms of elements combine in 1 mole of the compound.
The oxidation state of thulium is +3 and the oxidation state of SO4 is +2.
By exchange of radicals, the molecular formula of the compound is as :
[tex]Tm_2(SO_4)_3[/tex]
The name of the compound is thulium (iii) sulfate.
Therefore, the compound is thulium (iii) sulfate.
Learn more about molecular formula at: https://brainly.com/question/13058832
What type of weather front would be responsible for the following forecast: "a period of heavy rain within the next 24 hours followed by warmer temperatures. Thunderstorms and possibly thundershowers from the period of 24 to 30 hours from now with temperatures dropping by 20-25 degrees F and barometric pressure dropping by 15-20mb. Snow beginning 30-36 hours from now, accumulation of 10-13 inches possible. Cooler temperatures and clear skies in 2 days."
The kind of weather front that would be responsible for the forecast given above is:
"Cooler temperatures and clear skies in 2 days."
A weather front in Meteorology refers to the zone where transition occurs between two different air masses a the surface of the earth. That is, you have warm air (which usually results in low pressures, and of course rain) and cold air.
Warm air creates rain because a warm mass of air will hold moisture collected from a large geographical space. This air cools as it rises, then eventually transits into precipitation - rain.
Learn more about Weather Front at:
https://brainly.com/question/1387503
The formula relating mass and weight is W=
Answer:
The weight of an object is defined as the force of gravity on the object and may be calculated as the mass times the acceleration of gravity, w = mg.
Explanation:
W=F=M x GThe measurement of the effect of gravity on an object's mass is called weight. While mass m is a measurement of the object's amount of matter. W=mg provides the weight.
What is the formula relating to mass and weight?The formula W (weight) = m (mass) times g (gravity, on Earth typically measured at 9.8 N/kg) allows you to determine something's weight from its mass and vice versa.
The common weight calculation formula is W = mg (N/kg). Here, "g" stands for the acceleration brought on by gravity. The value of g on earth is 9.8 m/s2. Other names for it include the gravitational constant.
A body's mass, which is a measurement of how much matter it contains, is equal to its weight when multiplied by the acceleration caused by gravity. The SI unit of weight is the Newton, and the SI unit of mass is the kilogramme (kg) (N).
Thus,The formula relating mass and weight is W=mg.
To learn more about mass and weight, follow the link;
https://brainly.com/question/17940519
#SPJ2
Bonding with intermolecular forces:
1.) is CH3CI a hydrogen bonding? yes or no?
2.) is CH3CI dipole-dipole interactions? Yes or no?
3.) is CH3CI a london dispersion forces? Yes or no?
Answer:
1. yes
2. yes
3. No
Hope this helps!!
What kinda worm is sometimes used to prevent blood clots
Answer:
Leeches
Explanation:
leeches secrete peptides and proteins that work to prevent blood clots
Answer:
Leeches
Explanation:
They aren't as commonly used as they may have been in places such as ancient Rome or Egypt. But leeches are still used today, even in procedures such as microsurgery. Leeches secrete polypeptides and enzymes that work to prevent blood clots. So they can be useful when it's crucially necessary to avoid bloodclots during a procedure.
Arrange these elements according to atomic radius.
Largest radius
Smallest radius
Answer Bank
K
Ca
Mg
Be
Rb
Answer:
straight to the point:
Explanation:
atomic radius of :
k = 280 pm
Ca = 231 pm
Mg = 173 pm
Be = 153 pm
Rb = 248 pm
pm means "picometers".
so knowing this we will have :(largest to smallest),
k
Rb
Ca
Mg and
Be.
hope this helps .
help pls
plspspslslslsl
Answer:
see below
Explanation:
K.E. = 1/2 * m * v^2
= 1/2 * 2 * 5^2 j
state three chemical properties of hydrochloric acid
Explanation:
Hcl is the one of the strongest acids as it disassociates almost everything. Its Chemical formula is HClIt has a unique pungent smell. it is commonly used in laboratories used for both in its aqueous and gaseous formHope it helps...
Answer:
H2o,hydrogen,carbonoxide
HELPPPPPPP A certain reaction is endothermic in the forward direction. The reaction has less moles of gas on the product side. Which of the following stresses would increase the yield of the products (shift right)? (5 points)
Group of answer choices
Increasing the pressure
Decreasing the temperature
Increasing the volume
Decreasing the reactant concentration
Answer: Option A
Explanation:
Increase in temperature will increase the yield of the product and cause a shift to the right.
What is an Endothermic reaction?
This is the type of reaction in which reactants absorb heat energy from the surroundings to form products.
This depicts that an increase in temperature will increase the yield of products thereby making option A the most appropriate choice.
how many o2 molecules are present in 0.470 of oxygen gas
Answer:
The number of molecules in 16 grams of oxygen gas is 3.01*10^23, equal to half of Avogadro's number
Explanation:
Drag each label to the correct location on the chart.
Classify the natural resources as renewable or nonrenewable.
Water, Natural Gas, Sunlight, Wind, Wood, Coal, Oil, Uranium, Metal ores
Natural resources are the resources that are generated and found in nature. Water, wood, sunlight, and wind are renewable sources of energy.
What is renewable and non-renewable energy?Renewable sources of energy are the resources that replenish after depletion over time and are not limited in amount. They get reloaded through the natural process over finite time.
Wind or the air, sunlight from the sun, water, and wood from trees are some examples of renewable sources of energy.
Non-renewable sources of energy are the resources that cannot be easily replenished by natural means after overconsumption as the process of the formation takes hundreds of billions of years.
Oil, natural gases, coal, uranium, and metal ores are nonrenewable sources of energy.
Therefore, natural resources can be renewable or non-renewable.
Learn more about natural resources here:
https://brainly.com/question/1078952
#SPJ1
carbon reacts with oxygen to produce carbon dioxide (CO2(g),deltaHf=-393.5kl/mol)according to the equation below
The heat required to form 1 mole of carbon dioxide from carbon and oxygen is 393.5 kJ/mol.
What is the enthalpy of formation?Enthalpy of formation of a substance is the heat required to form 1 mole of a substance from its reactants.
Carbon reacts with oxygen to produce carbon dioxide.
The enthalpy of formation of carbon dioxide is -393.5 kJ/mol.
Therefore, the heat required to form 1 mole of carbon dioxide from carbon and oxygen is 393.5 kJ/mol.
Learn more about enthalpy of formation at: https://brainly.com/question/14047927
#SPJ1
Give an example of another metal
Answer:
Examples of metals are aluminium, copper, iron, tin, gold, lead, silver, titanium, uranium, and zinc.
Explanation: This is was makes a metal a metal: it needs to be:
high electrical and thermal conductivity as well as by malleability, ductility, and high reflectivity of light.
Why is the boiling of water a physical change if water changes from a liquid to a gas?
Answer:
because the water vapor still has the same molecular structure as liquid water (H2O). If the bubbles were caused by the decomposition of a molecule into a gas (such as H2O →H2 and O2), then boiling would be a chemical change.
Explanation:
Boiling water is an example of a physical change and not a chemical change because the water vapor still has the same molecular structure as liquid water (H2O). If the bubbles were caused by the decomposition of a molecule into a gas (such as H2O →H2 and O2), then boiling would be a chemical change.
If 500ml of H₂ gas at 600mmHg and 400ml of CO₂ gas at 700mmHg are mixed in a 1 lit vessel, find the total pressure of mixture of gases at constant temperature..
Answer:
Total pressure increased
Explanation:
When gas C is added in the vessel then number of mole increases and number of collision depends on the number of molecules present in the vessel and on adding gas C ,mole also increases hence number of collision increases therefore pressure also increases because number of collision increases.
Total pressure increases.
What happens if you ignite flint and steel around obsidian?
Answer:
Nothing.
Explanation:
Onsidians reaction point is 1,830'f.
Explain why the ionic radii for S^-2 is larger than O^-2?
Answer:
When comparing two ions, gaining the same electrons, atomic radii, you can follow the same general rule as regular ionic radius.
Explanation:
In general, Sulfur has a larger atomic radius than Oxygen, as it is lower on the periodic table. Since they both are gaining the same amount of electrons, the trend still applies
The question is in the photo
The required moles of AgBr precipitate produced by given moles of silver nitrate is 0.0123.
How do we calculate moles from molarity?Molarity of any solution is define as the moles of solute present in per liter of the solution and it will be represented as:
M = n/V
Given that, molarity of AgNO₃ = 0.250M
Volume of AgNO₃ = 49.5mL = 0.0495L
Moles of AgNO₃ = (0.25)(0.0495) = 0.0123mol
Given chemical reaction is:
2AgNO₃(aq) + CaBr(aq) → 2AgBr(s) + Ca(NO₃)₂(aq)
As it is mention that CaBr is present in excess quantity and AgNO₃ is the limiting reagent so the formation of precipitate will depend on the AgNO₃.
From the stoichiometry of the reaction, it is clear that:
2 moles of AgNO₃ = produces 2 moles of AgBr
0.0123 moles of AgNO₃ = produces 2/2×0.0123=0.0123 moles of AgBr
Hence 0.0123 is the required moles of precipitate.
To know more about moles, visit the below link:
https://brainly.com/question/19099163
#SPJ1
Prepare 100. ml of 0.1 N H2SO4 by diluting from original H2SO4.
Eq. wt. of H,SO4 = 98/2=49 .
d H2SO4= 1.08
Purity =98%
Density for 98% = 1.84 g/mL
V M = # mol
0.1 L x 1 M = 0.1 mol
0.1 mol x 98 g/mol = 9.8 g
m =%CDV
9.8 g = 0.98 x 1.84V
V = 5.43 mL
take this volume and carefully (acid to ater) dilute till 100 mL
Which of these data points is the most reliable?
Answer:
third point
Explanation:
omniscient because it gives info about every character instead of one
hope this helps
If the magnetic energy stored by a 0.50 H inductor is 3.6 J, what is the current through it?
A. 0.13 A
B. 0.90 A
C. 1.8 A
D. 3.8 A
E. 5.4 A
The current passing through the inductor is 3.8 A. The correct option is D. 3.8 A
Energy stored in a magnetic fieldFrom the question, we are to determine the current passing through the inductor.
From the formula, for the energy stored in a magnetic field
E = 1/2LI²
Where E is the energy
L is the inductance
and I is the current
From the given information,
E = 3.6 J
L = 0.50 H
Putting the parameters into the formula, we get
3.6 = 1/2 × 0.50 × I²
3.6 = 0.25 × I²
I² = 3.6 ÷ 0.25
I² = 14.4
I = √14.4
I = 3.7947
I ≅ 3.8 A
Hence, the current passing through the inductor is 3.8 A. The correct option is D. 3.8 A
Learn more on Energy stored in a magnetic field here: https://brainly.com/question/15244801
5. How many grams of potassium bromide will dissolve in 450g of water at 80°C?
What temperature is necessary for 50 g of Potassium Chlorate to dissolve in
100 g of water?
Answer:
75°C
Explanation:
Answer: 75°C because KCL at 75°C goes into 50g in Solubility in 100g water. TRUST ME ITS RIGHT.
How many milliliters of this solution are required to prepare 1.00 L of 0.130 M K2Cr2O7 ?
Answer:
First you'll need to divide the mass of K2Cr2O7 by its molar mass and volume which should be easy but I'll do some of it to help you out
Explanation:
[tex]K_{2}Cr_{2}O_{7}[/tex]
[tex]2K = 39.098 = 2(39.098) = 78.196[/tex]
[tex]2Cr = 51.996 = 2(51.996) = 103.992[/tex]
and
[tex]7O = 15.999 = 7(15.999) = 111.993[/tex]
[tex]78.196 + 103.992 + 111.993 = 294.181[/tex]
so that's the mass of K2Cr2O7 and then you divide it by the molar mass and volume.
Hopefully you can do that on your own! Hope I helped a bit atleast and I have a good feeling about 0.438 but I don't want you to just guess
How many moles of NO2 will be produced from 15 moles of oxygen?
2 NO (g) + O2 (g) -------------> 2 NO2 (g)
Based on the mole ratio of the reaction, 30 moles of NO2 will be produced from 15 moles of oxygen.
What is mole ratio of a reaction?The mole ratio of a reaction is the ratio in which moles of reactants combine with themselves to form moles of products.
The equation of the reaction is given below:
[tex]2 NO (g) + O_2 (g) ---> 2 NO_2 (g)[/tex]
The mole ratio of NO2 to oxygen is 2 : 1
Molles of NO2 produced from 15 moles of O2 = 15 × 2 = 30 moles
Therefore, 30 moles of NO2 will be produced from 15 moles of oxygen.
Learn more about moles ratio at: https://brainly.com/question/19099163
How many Hydrogen atoms are in 4HN₃?
Use the following scenario to answer the question.Taj and Micah chose to go bowling. Taj rolled the ball toward the pins first, knocking them all down.Which of the following is affecting these objects?(1 point)Inertia is affecting these objects. Inertia is affecting these objects. A balanced force is affecting the objects.A balanced force is affecting the objects.An unbalanced force is affecting the objects. An unbalanced force is affecting the objects. Gravity is affecting these objects.
An unbalanced force is affecting the objects and is therefore denoted as option C in this scenario.
What are Unbalanced forces?These are the type of forces which cause an object on which it is acting to accelerate or change its position.
The unbalanced force is responsible for the movement of the ball and the pins being knocked down due to unequal forces on the same side.
Read more about Unbalanced forces here https://brainly.com/question/227461
#SPJ1