Answer:
That it is cooking the food or whatever is in the pot.
Learning this in science.
Which temperature is warmest
A. 0°C
B. 273 K
C. 32°F
D. 30°C
Answer:
your answer should be B.273 K
Explanation:
A scientist is considering formaldehyde (HCHO) for use in an experiment. She is studying the strength of triple bonds in molecules. Is
ormaldehyde a good choice for her to use? Why?
A. Yes, HCHO has three triple bonds.
B. Yes, HCHO has one triple bond.
C. No, HCHO has a double bond but no triple bonds.
D. No, HCHO has only single bonds.
what's the molar mass of alumina, AI2O3? the atomic weight of alumina is 26.98 and the atomic weight of oxygen is 16.00
Answer:
the answer is 101.96 g/mo
Explanation:
Answer:
101.96f/mal
Explanation:
The three lines in this Lewis dot structure represent the.
A)
three valence electrons of dinitrous oxide.
B)
six electrons in the triple bond of diatomic nitrogen.
C)
three electrons joining two nitrogen atoms in a diatomic molecule.
D)
three double bonds between the valence electrons of diatomic nitrogen.
Answer:
B) . six electrons in the triple bond of diatomic nitrogen
Explanation:
The three line in this Lewis dot structure represents the six electrons in the triple bond of diatomic nitrogen.
Nitrogen is made up of 7 electrons with 5 valence ones.
A lewis structure is made up of the symbol of the element surrounded by dot to represent the valence electrons.
In this nitrogen molecule, both species share 6 electrons. This makes each nitrogen atom isoelectronic with neon.
write a summary about the notes below (images attached)
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Chemistry is the study of matter, which is anything that has mass and takes up spaces. Changes in matter is best described as physical properties, can be observed without changing the substance into another substance, and chemical properties, a substance that describes it's ability to change into other substances. An example of a physical property is melting point and flexibility. An example of a chemical property is burning and rusting.
Chemical changes may also occur when bonds break and new bonds are then formed. As a result of this, a new substance is formed. Something you can look for in physical properties are changes in color and if gases are produced from solids or liquids.
chemistry is the science of changing of objects into other substances, and the study of matter. Chemical change can be seen with things like irreversable burns, and cooking while physical change can be seen as changes of apperance like moving an object, or painting it.
Kiley wants to balance the equation H2 + N2 → NH3. Which would be her first step in balancing an equation? multiplying the subscripts in the atoms of the reactants together adding the coefficient 3 in front of H2 and the coefficient 2 in front of NH3 changing the subscripts so they match for the total number of atoms creating a chart that shows the number of atoms in the reactants and products
Answer:
D - Creating a chart that shows the number of atoms in the reactants and products
Explanation:
Just took the test
Balancing chemical equations is a method to equate the number of atoms involved in the reaction. The first step in balancing involves creating a chart that shows atoms in the reactants and products. Thus, option D is correct.
What is a balancing chemical equation?Balancing a chemical reaction involves counteracting the number of atoms and the charges of the reactants and the products involved in the reaction. The coefficients of the equation must be the same on the left and right sides of the equation.
The first step involved in balancing includes making a table that includes the number of atoms of the elements of the reactants and the products side. This allows a proper understanding of the coefficients.
After the table, coefficients are added accordingly to the reactant and the product side so that number is equivalent and follows the law of mass of conservation. The reaction given is balanced as:
N₂ + H₂ → NH₃
N₂ + H₂ → 2 NH₃
N₂ + 3 H₂ → 2 NH₃
Therefore, in option D. the reactions are balanced by creating a table of the coefficients.
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In metallic bonds, the mobile electrons surrounding the positive ions are called a(n)
Is this right I will give brainiest
Answer:
Yes, you are correct.
Explanation:
I used Google.
Which of the following conclusions about the two intermolecular forces is correct? X represents London dispersion forces, and Y represents ion-dipole forces. X represents dipole-dipole forces, and Y represents ion-dipole forces. X represents hydrogen bonding, and Y represents dipole-dipole forces. X represents London dispersion forces, and Y represents dipole-dipole forces.
Answer:
X represents London dispersion forces, and Y represents dipole-dipole forces.
Explanation:
What is the best-known feature of sedimentary
rocks?
A. ripple marks
B. fossils
C. graded bedding
D. cross-bedding
Answer:
option is (b)
Explanation:
please mark me as brilliant
List 5 foods that contain bacteria?
help me i’m crying right now
Answer:
Displacement
Explanation:
A 7.28 g sample of chromium metal was heated to produce chromium oxide. The weight of the compound was 10.63 g. What is the percent chromium in this compound?
Answer:
68.48%
Explanation:
The percent mass of an element in a compound tells us about the amount of such element contributed to the total compound.
In this case, 7.28 g sample of chromium metal was heated to produce chromium oxide with weight of 10.63 g. The percent mass of chromium in chromium oxide can be calculated by using the formula:
%mass of Cr = mass of Cr/mass of Chromium oxide × 100%
%mass of Cr = 7.28/10.63 × 100
%mass of Cr = 0.6848 × 100
%mass of Cr = 68.48%
what is the most likely oxidation state of nitrogen
In comparing the chemistry of the amines with alcohols and ethers, we discover many classes of related compounds in which nitrogen assumes higher oxidation states, in contrast to limited oxidation states of oxygen. In this context, keep in mind that the oxidation state of elemental oxygen (O 2) and nitrogen (N 2) is defined as zero.
Answer:
-3
Explanation:
What is the velocity if you travel 60 m to the right in 20 seconds
Answer:
The velocity would be if m was meters +1200
Explanation:
im smart
What is the orbital notation for Al+3?
O 1s2 2s22p6
O 182 2s2 2p6 352 3p1
O 1s2 2s2 2p6 352 3p5
O 1s2 2s22p6 352 3p6
Order the relative rate of diffusion of the following gases from slowest to fastest
Answer:
Kr, Ar, Ne, N
Explanation:
Hope this helps
How did scientists find out about atoms before technology?
Scientists find out about atoms before technology from X-ray
There are three ways that scientists have proved that these sub-atomic particles exist and they are direct observation, indirect observation or inferred presence and predictions from theory or conjecture and scientists in the 1800's were able to infer a lot about the sub-atomic world from chemistry.
If X-rays let chemists peer at the structure of atoms, scanning tunneling microscopes finally revealed the atoms themselves scientists believed that atoms were uniform, solid, hard, incompressible, and indestructible and that they moved in infinite numbers through empty space until stopped and differences in atomic shape and size determined the various properties of matter.
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which one has greater electron affinity and why?cl or F
Answer:
Cl (Chlorine) has higher electron affinity or electron gain enthalpy as compared to F(Fluorine) as though F is most electronegative in the whole periodic table and so has the highest tendency to attract electrons
Explanation:
What happens in a chemical reaction?
a. Atoms are destroyed.
b. Atoms are created.
c. Molecules are created.
d. Atoms are rearranged.
Please select the best answer from the choices provided
A
B
С
D
Pls help please :((
Answer:
During the reaction, chemical bonds break in the reactants and new chemical bonds form in the products.
Answer:
d. Atoms are rearranged.
Explanation:
Oil is removed from the refrigerator vapor by a:
A compressor, condenser, and a evaporator
Explain the humoral theory
Answer:
The medical philosophy of the ancient Greeks in which the state of health and disease was determined by the four body “humours”—blood, yellow and black bile, and phlegm—and their relationships with the four elemental humours—air, fire, earth and water. Segen's Medical Dictionary.
Explanation:
PLEASE HELP!! Circuit A consist of two wires and a battery. Circuit B consist of the same strength battery and the same type of wires, but it also contains a light bulb. Which circuit has more resistance?
Answer:
light bulb B
Explanation:
more resistance
which stimulate causes high energy emotional elation dehydration and damage serotonin producing neurons
Answer:
ecstasy
Explanation:
Question 2 of 25
Rain exists in which phase?
O A Liquid
O B. Solid
C. Plasma
D. Gas
Answer:
liquid
Explanation:
correct answer hope it helps
Which of the following pairs of elements is least likely to combine to form a compound?
A. Aluminum AI and phosphorus P
B. boron B and neon S
C. carbon C and sulfur S
D. oxygen and fluorine F
Answer:
c.carbon C and sulfur S
Explanation:
Calculate the frequency of a wave with a wavelength of 5.62 x 1010 m. (first convert m to nm)
Answer:
f = 0.534×10⁻² Hz
Explanation:
Given data:
Frequency of wave= ?
Wavelength of wave = 5.62×10¹⁰ m
Solution:
Formula:
Speed of wave = wavelength × frequency
Speed of wave = 3×10¹⁷ nm/s
λ = 5.62×10¹⁰m×10⁹ nm/1 m = 5.62×10¹⁹ nm
Now we will put the values in formula.
3×10¹⁷ nm/s = 5.62×10¹⁹ nm × f
f = 3×10¹⁷ nm/s / 5.62×10¹⁹ nm
f = 0.534×10⁻² s⁻¹ or
f = 0.534×10⁻² Hz
How many moles of H2SO4 are required to completely react with 7.20 mol of Al according to the balanced chemical reaction: 2Al(s) +3H2SO4(aq) → Al2(SO4)3(aq) +3H2(g)
10.8
7.2mol*3/2=10.8mol.
10.8 moles of H₂SO₄ is required for the reaction.
The balanced equation for the reaction is given below:
2Al + 3H₂SO₄ —> Al₂(SO₄)₃ + 3H₂From the balanced equation above,
2 moles of Al required 3 moles of H₂SO₄.
Finally, we shall determine the number of mole of H₂SO₄ required to react with 7.20 moles of Al.
This can be obtained as follow:
From the balanced equation above,
2 moles of Al required 3 moles of H₂SO₄.
Therefore,
7.20 moles of Al will require = [tex]\frac{7.2 X 3}{2} \\\\[/tex] = 10.8 moles of H₂SO₄
Thus, 10.8 moles of H₂SO₄ is required for the reaction.
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What is the specific rotation of a sample of carvone that is an equal mixture of the R and S enantiomers
Answer:
Zero
Explanation:
An an equal mixture of the R and S enantiomers of carvone is called a racemic mixture.
In a racemic mixture, the R enantiomer rotates plane polarized light in one direction while the S enantiomer rotates plane polarized light in another direction.
This cancels out the rotation due to each enantiomer since they are equal in magnitude but opposite in direction leading to a specific rotation of zero for the racemic mixture.
The atomic masses of 20Ne (90.48 percent), 21Ne (0.27 percent), and 22Ne (9.25 percent) are 19.9924356, 20.9938428, and 21.9913831 amu, respectively. Calculate the average atomic mass of neon. The percentages in parentheses denote the relative abundance
Answer:
20.180042 amu
Explanation:
From the question given above, the following data were obtained:
Isotope A (20Ne)
Mass of A = 19.9924356 amu
Abundance (A%) = 90.48%
Isotope B (21Ne):
Mass of B = 20.9938428 amu
Abundance (B%) = 0.27%
Isotope C (22Ne):
Mass of C = 21.9913831 amu
Abundance (C%) = 9.25%
Average atomic mass of Neon =.?
The average atomic mass of Neon can be obtained as follow:
Average atomic mass = [(mass of A × A%)/100] + [(mass of B × B%)/100] + [(mass of C × C%)/100]
= [(19.9924356 × 90.48)/100] + [(20.9938428 × 0.27) /100] + [(21.9913831 × 9.25) /100]
= 18.0891557 + 0.05668338 + 2.03420294
= 20.180042 amu
Therefore, the average atomic mass of Neon is 20.180042 amu