please help! What is the empirical formula for a compound that has 1 mole of nitrogen and 2.5 moles of oxygen?
Answer:
[tex]N_{2}O_{5}[/tex]
Explanation:
usually, the first step is to calculate the moles but since that is already given in the question we can move onto the next step
least molar ratio:
N = [tex]\frac{1}{1}[/tex] = 1
O = [tex]\frac{2.5}{1}[/tex] = 2.5
when the answer is in decimals we will multiply it by an integer in order to make it a whole number (in this case 2)
O = 2.5(2) = 5
in order to balance, we will also multiply the atoms of N by the same integer
N = 1(2) = 2
thus, the empirical formula is [tex]N_{2}O_{5}[/tex]
______________Helps the earth continue to go around the sun
Gravity
Entropy
Magnetism
Inertia
Friction
How much water is needed to dissolve 30g or Pb(NO3)2 at 40.0C answer the question? NO BOTS ALLOWED
Answer:
10 must be added
Explanation:
4.1 moles of sodium carbonate to molecules of sodium carbonate.
Answer:
2.469×10²⁴ molecules
Explanation:
Multiply by Avogadro's Number (6.022×10²³
What makes an atom stable?
a. Having the nucleus in the center
b. Being very small
c. Being neutral
d. Having the right number of protons and neutrons
2. What element is found in compounds that control all chemical changes in your body?
Answer:
???????
Explanation:
What is required to make a fire? Is it exothermic or endothermic?
Answer:
Combustion as an Exothermic Reaction
Explanation:
When substances burn, they usually give off energy as heat and light. The combustion of wood is an exothermic reaction that releases a lot of energy as heat and light.
Answer:
Exothermic
Explanation:
because exothermic causes fires while endothermic doesn't
Which organisms are consumers?
Select all correct answers.
mushrooms
monkey
grasshopper
bacteria
snake
Answer: snake grass hopper and monkey
Explanation: i took the test and this is what i got
Answer:
snake grasshopper and monkey
Explanation:
Define what coal is, explain how it forms, and what it is
used for today
Answer:
the main use of coal in the United States is to generate electricity.
Coal is a combustible black or brownish-black sedimentary rock with a high amount of carbon and hydrocarbons
Coal is formed when dead plant matter decays into peat and is converted into coal by the heat and pressure of deep burial over millions of years.
How does the structure of Ethane (C2H6) and Propane(C3H8) differ? Are they members of a Homologous series?
Answer:
Ethane & propane are members of same homologous series : alkane which is indicated with Cn H2n+2
Explanation:
1. Identify the reactants in this chemical equation:
2H2 + O2 + 2H2O
What is the volume of 11 moles of N2 at STP?
The characteristics of two unknown intermolecular forces, X and Y, are compared in the table.
Intermolecular Forces
х
Y
Occurs between molecules with instantaneous dipoles Occurs between molecules with permanent dipoles and ions
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 ion-dipole forces.
Explanation:
London forces occurs between molecules that are normally non-polar (electrically symmetric). It arises from instantaneous dipoles in molecules. It occurs in all substances.
Permanent dipoles are caused by non-symmetric electron distribution in molecules leading to a permanent dipole in the molecule such as in HCl. Interaction between the permanent dipole in these molecules and an ion is called ion-dipole interaction.
Hence; X represents London dispersion forces, and Y represents ion-dipole forces.
X represents London dispersion forces, and Y represents ion-dipole forces.
London forces:
London forces occurs between molecules that are normally non-polar (electrically symmetric). It arises from instantaneous dipoles in molecules. It occurs in all substances.For example: F₂, I₂Ion-dipole forces:
Permanent dipoles are caused by non-symmetric electron distribution in molecules leading to a permanent dipole in the molecule such as in HCl. Interaction between the permanent dipole in these molecules and an ion is called ion-dipole interaction.For example: sodium ion [tex](Na^+)[/tex]and water molecule[tex](H_2O)[/tex]Hence; X represents London dispersion forces,
and Y represents ion-dipole forces.
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brainly.com/question/22602228
A gas has the volume of 45mL at 25 C is heated to 50 C. What is the new volume of the gas? P1V1 = P2V2 V1/T1 = V2/T2 PV = nRT V1/T1 x V2/T2
Answer:
Option b (V1/T1 = V2/T2) is the right alternative or the new volume will be "0.048 L".
Explanation:
The given values are:
Temperature,
T₁ = 25°C
or,
= 298.15 K
T₂ = 50°C
or,
= 323.15 K
Volume,
V₁ = 45 mL
or,
= 0.045 L
V₂ = ?
As we know,
⇒ [tex]\frac{V_1}{T_1} =\frac{V_2}{T_2}[/tex]
Or,
⇒ [tex]V_2=\frac{V_1\times T_2}{T_1}[/tex]
On substituting the values, we get
⇒ [tex]=\frac{0.045\times 323.15}{298.15}[/tex]
⇒ [tex]=\frac{14.541}{298.15}[/tex]
⇒ [tex]=0.048 \ L[/tex]
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In your own words, what does the law of
conservation of energy tell us? Hint: It is
VERY similar to the law of conservation
of matter (we studied that in the first
semester).
Answer:
The law of conservation of mass States that matter can never be created or destroyed during c
Is a mixture with the same composition throughout
Answer:
A homogeneous mixture
Explanation:
A homogeneous mixture has the same composition throughout
how conditions on Earth would be different if its axis of rotation were vertical instead of tilted.
Answer:
there would be different times because the sun and moon are in different places and one side would be sunny for a long time
Explanation:
differentiate between homogenous and heterogeneous catalysis
Explanation:
Homogeneous catalysts are those that occupy the same phase as the reaction mixture (typically liquid or gas), while heterogeneous catalysts occupy a different phase. Generally, heterogeneous catalysts are solid compounds that are added to liquid or gas reaction mixtures.
How does energy from the Sun drive the cycling of matter?
Answer:
solar energy drives the cycle by evaporating water from the oceans, lakes, rivers, and soil. As liquid water evaporates or transpires, it forms water vapor and clouds, where water droplets eventually gain enough mass to fall back to Earth as precipitation.
Periodic table 50 elements with thier valancies
Answer:
The first 50 elements along with their valences are given below :
1. Hydrogen = 1
2. Helium = 0
3. Lithium = 1
4. Beryllium = 2
5. Boron = 3
6. Carbon = 4
7. Nitrogen = 3
8. Oxygen = 2
9. Fluorine = 1
10. Neon = 0
11. Sodium = 1
12. Magnesium = 2
13. Aluminium = 3
14. Silicon = 4
15. Phosphorus = 3
16. Sulphur = 2
17. Chlorine = 1
18. Argon = 0
19. Potassium = 1
20. Calcium = 2
21. Scandiun = 3
22. Titanium = 3
23. Vanadium = 4
24. Chromium = 3
25. Manganese = 4
26. Iron = 2
27. Cobalt = 2
28. Nickel = 2
29. Copper = 2
30. Zinc = 2
31. Gallium = 3
32. Germanium = 4
33. Arsenic = 3
34. Selenium = 2
35. Bromine = 1
36. Krypton = 0
37. Rubidium = 1
38. Strontium = 2
39. Yttrium = 3
40. Zirconium = 4
41. Niobium = 3
42. Molybdenum = 3
43. Technetium = 7
44. Ruthenium = 4
45. Rhodium = 3
46. Palladium = 4
47. Sliver = 1
48. Cadmium = 2
49. Indium = 3
50. Tin = 4
Note :
An element like Iron, copper can have more than one valencies.
Answer:
50 elements chemical eq, atomic number, atomic mass, no.of electrons, no.of protons, no.of neutrons, electronic configuration and valancies are given in the above attachment
Explanation:
Hope it helps you
True/False: A virus could have a mutation that makes it more transmissible (higher
chance of spreading).
Answer True
Explanation:
HELP ME GUYS I NEED HELP RN
Answer:
Robot 1 : 150 J
Robot 2: 40 J
Explanation:
30 N x 5m = 150 J
20 N x 2m = 40 J
Please mark as brainliest
Have a great day, be safe and healthy
Thank u
XD
The level of mercury in a barometer falls as the air pressure falls.
True
False
Real answers only or you will be reported and banned from brainly
Answer:True
Explanation:
The minimum stream velocity necessary to transport a sediment particle that is 0.1 centimeter in diameter is closest to
Answer:
5.0 cm/s
Explanation:
Q = V * A
given that the diameter of the particle = 0.1 cm
V = stream velocity , A = cross sectional area of stream , Q = stream flow
For a particle with a diameter of 0.1 cm,
To determine the stream velocity we will use a stadia rod to measure at least 5 meters down ( depth of stream ) three times and then take the average value which will be used to determine the cross sectional area of the stream but Given that the width of the stream is not given the closet value to the stream velocity will be = 5.0 cm/s
Explain why alkanes can be described as hydrocarbons.
Answer:
The International Union of Pure and Applied Chemistry (IUPAC) defines alkanes as "acyclic branched or unbranched hydrocarbons having the general formula CnH2n+2, and therefore consisting entirely of hydrogen atoms and saturated carbon atoms". ... The number of carbon atoms may be considered as the size of the alkane.hiiiiii guys hope you are all doing well
Answer:
wat dose dis du
Explanation:
u to frend lit me now if yu need help with yur math and english homewirk. me got anser 2 evryting
an archer releases an arrow toward a Target the arrow travels 166 m in 2 seconds what is the speed of the arrow
the speed of arrow is 83m/per second
that means
83metres = 1 second
●The arrow would cover the distance of 83 metres in 1 second
may this helps you
bye
What is an Ore? ufhfjfnf
Answer:
ore is naturally occuring solid material from which a metal or valuable mineral can be extracted
profitably.
A student collects 25 mL of gas at 0.98 bar. What volume would this gas occupy at 1.013 bar? * 3 points 25.8 mL 24.2 mL .09 mL 34.7 mL
Answer:
24.2 mL.
Explanation:
Assuming constant temperature, we can solve this problem using Boyle's law, which states:
P₁V₁=P₂V₂Where:
P₁ = 0.98 barV₁ = 25 mLP₂ = 1.013 barV₂ = ?We input the data:
0.98 bar * 25 mL = 1.013 bar * V₂And solve for V₂:
V₂ = 24.18 mLThe closest option is the second one: 24.2 mL.
2-ciclopropilpropano
Answer:
cool
Explanation: