Answer:
[tex]322014\ \text{J}[/tex]
Explanation:
m = Mass of water = 1 kg
c = Specific heat of water = [tex]4182\ \text{J/kg}^{\circ}\text{C}[/tex]
[tex]\Delta T[/tex] = Change in temperature = [tex](99-22)^{\circ}\text{C}[/tex]
Heat or energy required in the system is
[tex]Q=mc\Delta T\\\Rightarrow Q=1\times 4182\times (99-22)\\\Rightarrow Q=322014\ \text{J}[/tex]
The energy required is [tex]322014\ \text{J}[/tex]
Unit of energy is Joule
[tex]mc\Delta T=\text{kg}\times \dfrac{\text{J}}{\text{kg}^{\circ}\text{C}}\times\ ^{\circ}\text{C}=\text{J}[/tex]
As heat is being absorbed by the water it is endothermic in nature.
calculate the chemical amount of ammonia present in a 11.22g sample of the compound
Answer:
3.97 x 10²³atoms
Explanation:
Given parameters:
Mass of ammonia = 11.22g
Unknown:
Chemical amount of ammonia present = ?
Solution:
The chemical amount present in a substance is the number of atoms it contains.
To solve this problem, from the given mass find the number of moles first.
Number of moles = [tex]\frac{mass}{molar mass}[/tex]
Molar mass of NH₃ = 14 + 3(1) = 17g/mol
Number of moles = [tex]\frac{11.22}{17}[/tex] = 0.66mole
1 mole of any substance contains 6.02 x 10²³ atoms
0.66 mole of ammonia will contain 0.66 x 6.02 x 10²³ atoms
= 3.97 x 10²³atoms
Is CH4O2 polar or nonpolar?
Answer:
polar
Explanation:
hEEEYYYY peeps! this is the same related question about another scientist with the cells, so yeaaaaaah...btw meh teacher also made dis as well:>
Answer:
im pretty sure it is D
Explanation:
this is an old term for a microscopic organisms that included bacteria, protozoans, and very small animals
How can you find out what substances
Answer: Melting or boiling
Explanation:
Melting or boiling point is another property that scientists can use to identify a substance. Melting point is the temperature at which a substance changes from solid → liquid. Boiling point is the temperature at which a substance changes from liquid → gas.
WILL GIVE 50 POINTS AND BRAINLIEST!!!!!
Co^3+ and BrO^- what is the empirical formula and name? K^+ and C2H3O2^- what is the empirical formula and name of compound?
Temperature is a(n)
ecosystem.
component of an ecosystem.
Answer:
Temperature is an abiotic component of an ecosystem
Explanation:
What is the molar mass of sulfur (S)?
A. 32.06 g/mol
OB. 16 g
O c. 16 g/mol
D. 32.06 g
Answer:
A. 32.06 g/mol
Explanation:
The molar mass units are always g/mol
its 32.06 g/mol bro its letter A
How do I calculate Molar Mass
Answer:
Explanation:
The molar mass is the mass of a given chemical element or chemical compound (g) divided by the amount of substance (mol).
The molar mass of a compound can be calculated by adding the standard atomic masses (in g/mol) of the constituent atoms. hope this helps...
Please help me ASAP !!!!
Answer:
Volume of HBr = V₂ = 7.5 mL
Explanation:
Given data:
Volume of NaOH =V₁= 25.0 mL
Molarity of NaOH =M₁= 0.150 M
Molarity of HBr =M₂= 0.5 M
Volume of HBr =V₂= ?
Solution:
M₁V₁ = M₂V₂
0.150 M ×25.0 mL = 0.5 M×V₂
V₂ = 0.150 M ×25.0 mL / 0.5 M
V₂ = 3.75 M.mL /0.5 M
V₂ = 7.5 mL
calculate the wavelength of light in nm that has a the frequency of 1.24 × 10^15s –1 . The velocity of light is 3.00 × 10^8m/s.
Answer:
nose
Explanation:
Among electromagnetic waves, UV rays are most dangerous because exposure to these radiation cause serious problems in living organism. Therefore, the wavelength of light is 2.41×10⁻⁷m.
What is electromagnetic wave?Electromagnetic wave is a wave which contain two component one is electric component and other is magnetic component. The electric and magnetic component are perpendicular to each other. There are so many wave that comes under electromagnetic wave like infrared wave , radio wave, light wave.
There is a relation between frequency of wave, and wavelength of wave
Mathematically,
ν=c÷λ
where,
ν=frequency of light=1.24 x10¹⁵s⁻¹
c is speed of light that is 3×10⁸m/s
λ is the wavelength of light=?
Substituting all the values
1.24 x10¹⁵s⁻¹=3×10⁸m/s÷λ
λ= 2.41×10⁻⁷m
Therefore, the wavelength of light is 2.41×10⁻⁷m.
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Which type of of star cluster is loose and disorganized? A. binary B. eclipse C. globular or D. open.
Answer:
Open cluster
Explanation:
Why should I explain?
Answer: D open cluster
Explanation:
A helium balloon has a volume of 2.00L at 101kpa. As the balloon rises the pressure drops to 97.0kPa. What is the new volume?
Answer:
2.08L
Explanation:
V1 = 2.00L
P1 = 101kPa
P2 = 97.0kPa
V2 = ?
from Boyle's law,
P1V1 = P2V2
101 × 2 = 97 × V2
V2 = 202/97 = 2.08L
Therefore, the new volume is 2.08L
Answer:
2.1L
Explanation:
Given parameters:
Initial volume = 2L
Initial pressure = 101kPa
Final pressure = 97kPa
Unknown:
Final or new volume = ?
Solution:
Now to solve his problem which relates pressure and volume, we simply apply Boyle's law which is mathematically expressed below;
P₁ V₁ = P₂ V₂
P and V are pressure and volume
1 and 2 are initial and final states;[tex]\frac{101 x 2}{97}[/tex]
101 x 2 = 97 x V₂
V₂ = [tex]\frac{101 x 2}{97}[/tex]
V₂ = 2.1L
What is the term for what happens when light travels from one medium to another?
Answer:
is there any answer choices????
Answer:
The answer is Refraction
What 3 objects produce gamma rays in space?
Answer:
SOURCES OF GAMMA RAYS
Explanation:
They are produced by the hottest and most energetic objects in the universe, such as neutron stars and pulsars, supernova explosions, and regions around black holes.
Hope This Helps * I Used My Science Book To Answer This
An isotope is an atom that has a different_______from it’s parent atom, meaning it has lost or gained______.
Answer:
1- number of neutrons
2- mass
Explanation:
fill in the chart pls ,
Answer:
BeCL2 .1st column 2nd column 3rd column
1. beryllium 2.chloride. 3.beryllium
chloride
I think there is mistake of chemical this is Na2SO4
Na2SO4-----column 1. column 2
1.disodium 2.sulfate
decahydrate
column 3
3.disodium sulfate decahydrate
Explanation:
this is my answer
what are the seven identified components
of the electromagnetic spectrum?
Answer:
The EM spectrum is generally divided into seven regions, in order of decreasing wavelength and increasing energy and frequency. The common designations are: radio waves, microwaves, infrared (IR), visible light, ultraviolet (UV), X-rays and gamma rays.
Explanation:
Answer:
The EM ( electromagnetic) spectrum is generally divided into seven region ,in order of decreasing wave length and increasing energy and frequency.The common designations are:
1. Radio waves
2. Microwave
3. Infrared (IR).
4. Visible light.
5. Ultraviolet (UV).
6. X-rays.
7. Gamma rays.
Which one of Steno’s principles is responsible for the thin undisturbed layers found in the Grand Canyon?
Answer:
Explanation:
The answer is principle of original lateral
Continuity. Hope this helps
what material is a pure substsane
Answer:
salt, sugar, and so on.
Explanation:
A pure substance is a material that has a constant composition, and has the same properties throughout the sample. pure substances in chemical equations form predictable products. In chemistry, a pure substance has only one type of atom , molecule, or compound.
Copper (Cu) reacts with oxygen (O) to form copper oxide (Cu). The properties of copper oxide (CuO) are most likely
Different from copper or oxygen
Similar to both copper and oxygen
Similar to only copper
Similar to only oxygen
Answer:
A- SImilar to both copper and oxygen
Explanation:
If copper and oxygen react to form copper oxide, a compound of both Copper and Oxygen, they most likely have traits from both elements, therefore its A
The net force on a vehicle that is accelerating at a rate of 1.5 m/s2 is 1,800 newton's. What is the mass of the vehicle to the nearest kilogram?
Answer:
1200 kgExplanation:
The mass of the vehicle can be found by using the formula
[tex]m = \frac{f}{a} \\ [/tex]
f is the force
a is the acceleration
From the question we have
[tex]m = \frac{1800}{1.5} \\ [/tex]
We have the final answer as
1200 kgHope this helps you
questions:
3Na2SO4
b. How many total atoms of Na are represented in the formula?
The air around the equator has a high temperature, so it has a _______ air pressure. *
Explanation:
The air around the equator has a high temperature, so it has a _lower_____ air pressure
HELP!! An unknown solution has a pH reading of 8.4. Which statement is true about this solution?
A. The solution is a strong acid.
B. The solution is a strong base.
C. The solution is a weak acid.
D. The solution is a weak base.
Answer:
D- a weak base
Explanation:
The ph scale goes from 1-10 a solution over 7ph is classified as basic. A solution thats 8.4 is only 1.4 over 7pH, making it a weak basic solution. An example of a strong base would be a solution with a pH of 9.2 (for example).
Answer:
D.) The solution is a weak base
Explanation:
I got it correct on founders education
A car is traveling with an initial velocity of 15 m/s when the driver decides to go faster by accelerating at 5 m/s2 for 10 seconds. How far did the car travel during this time?
70 m
300 m
175 m
400 m
Answer: Time needed: 2.5 s
Distance covered: 31.3 m
Explanation:
I'll start with the distance covered while decelerating. Since you know that the initial speed of the car is 15.0 m/s, and that its final speed must by 10.0 m/s, you can use the known acceleration to determine the distance covered by
on one side of the equation and solve by plugging your values
To get the time needed to reach this speed, i.e. 10.0 m/s, you can use the following equation
Explanation:
185 L of Cl2 is how many moles of Cl2?
What type of elements make up ionic bonds?
Ionic bonds are formed between ionic compounds, Ionic compounds are formed when metals join with nonmetals.
What are ionic bonds?Ionic bonds are electrostatic bonds that are formed between metals and nonmetals. It is an electrostatic attraction between oppositely charged ions in a chemical compound.
These bonds are formed when two or more atoms lose or gain electrons. An example of ionic bonds can be seen in the NaCl compound.
Na⁺ + Cl⁻ = Na⁺Cl⁻
NaCl is formed by the joining of oppositely charged elements. They constitute salt. Salt is made up of ionic compounds, so it easily dissociates into sodium and chloride when mixed in water.
Thus, ionic compounds are created when metals combine with nonmetals, and these combinations result in the formation of ionic bonds.
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Fruit fly cells have 8 chromosomes. After mitosis, you would expect a resulting fruit fly daughter cell to have how many chromosomes? Explain your answer.
After mitosis, it is expected that the daughter cells of a fruit fly with 8 chromosomes should have 8 chromosomes.
MITOSIS:
Mitosis is the kind of cell division in which a single cell produces two daughter cells that are genetically identical to the parent cell. Mitosis results in daughter cells that possess the same number of chromosomes as the parent cell, hence, it is called duplication division. This means that mitotic division maintains the chromosome number of parents in the daughter cells. For example, a fruit fly with 8 chromosomes will produce daughter cells with 8 chromosomes each. Therefore, after mitosis, it is expected that the daughter cells of a fruit fly with 8 chromosomes should have 8 chromosomes.Learn more at: https://brainly.com/question/3327479?referrer=searchResults
How could energy have played a role in the different rock types forming?
Answer:
Energy from different sources leads to different types of rocks.
Explanation: Energy inside Earth melts rock into liquid rock, but energy from the sun causes rock to weather into different types of rock.
Rocks are formed in earth by the deposition of minerals and decomposition of massive tectonic plates by the hot magma which is melted by the heat energy radiated from sun.
What are different types of rocks?There are broadly three different types of rocks, namely sedimentary rocks, igneous rocks and metamorphic rocks . They are classified based on their formation and composition.
The magma that the molten mineral fluid inside the earth crest melts under heat radiated from sun and this hotter fluid flows results in movement of tectonic plates and decomposition at some places.
Therefore, the heat energy and resultant convection current leads the tectonic plate boundaries and formation of different kinds of rocks which are stimulated by the action of air and water.
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1. What is the mass percentage of H2O in CuSO4-5H,O?
Answer: Molar mass of CUSO4 5H2O = 436.17861 g/mol.
Explanation: Convert grams CUSO4 5H2O to moles or moles CUSO4 5H2O to grams. Molecular weight calculation: 12.0107 + 238.02891 + 32.065 + 15.9994*4 + 5*(1.00794*2 + 15.9994) ›› Percent composition by element.