What is the formula for nickel || dichromate
Answer: Cr2NiO7 is the molecular formula for nickel II dichromate.
Water boils at 100°C. What is that temperature on the Kelvin scale? 333 K 213 K 373 K 325 K
Answer:
I can confirm that 100 degrees Celsius is 373 degreed Kelvin
Explanation:
To be exact, 100°C = 373.15°K, but rounding down would then give us 373.
blance: Mg + HNO2 → Mg(NO2)2 + H2
Explanation:
Mg + 2HNO2 → Mg(NO2)2 + H2
Answer:
Mg + 2HNO2 → Mg(NO2)2 + H2
Explanation:
Draw a physical model that shows the reaction of zinc metal and hydrochloric acid (hydrogen chloride).
Zinc + Hydrochloric Acid Zinc Chloride and Hydrogen Gas
Zn + 2HCI - ZnCl2 + H2
“Be sure to label your model to clearly show how you are representing the atoms, how they are rearranged and
that mass is conserved in the reaction.”
If anyone could maybe send me a drawing it’ll be so appreciated! God bless you all :)
Answer:
Zinc + Hydrochloric Acid Zinc Chloride and Hydrogen Gas
Zn + 2HCI - ZnCl2 + H2
Explanation:
Be sure to label your model to clearly show how you are representing the atoms
This question is about energy transfers. Which is the correct definition of conduction.'
(1 Point)
Transfer of thermal energy when particles in a heated fluid rise.
Transfer of thermal energy as a wave.
Transfer of thermal energy by the vibration of particles.
Which one of the following is an incorrect orbital notation?
B. 4f
C. 2d
D. 3s
E. 2p
(no 'A')
The answer option which is an incorrect orbital notation is: C. 2d.
A sublevel refers to an energy level that is typically associated with the valence electrons found outside an atomic nucleus.
In Chemistry, there are four (4) main types of sublevel and these includes:
s orbital (sublevel): 3sp orbital (sublevel): 2pd orbital (sublevel): 3df orbital (sublevel): 4fHowever, it is impossible for any atom of a chemical element to have a 2d orbital because electrons are generally located in the s and p orbitals (sublevels) in the second energy level.
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Find the mass of 11.37 mol of BaO. Round to the nearest whole number.
Answer:
1,354
Explanation:
Name the most abundant compound found in air?
Answer:
The two most abundant compounds in air are the gases carbon dioxide, CO2, and water vapor, H2O
Answer:
Nitrogen
Explanation:
Nitrogen is the most abundant compound found in the air. It accounts for about 78% of the air that we breath. It is closely followed by oxygen that accounts for about 21% of the air.
The following diagram shows a view of earth . What do the arrows represent
Answer:
how the earth rotates
Explanation:
Answer:
The Diagram shows Earth's rotation! ^^
Explanation:
Orbit and revolution is when the Earth goes around the sun and I'm sure it's not seasons because seasons isn't a movement of Earth.
Identify the type of reaction
CaCl2 + AgNO3 --> AgCl + Ca(NO3)2
Answer:
It is Double Replacment
Explanation:
They traded bonds.
Balanced Equation is 2AgNO3 + CaCl2 = 2 AgCl +1Ca(NO3)2
Please answer correctly nobody answers questions like this on brainly. BTW ITS STEM.
Which of the following choices describes an accurate relationship?
Descriptive research typically follows from explanatory research
Experimental research may lead to understanding descriptive research
Case study research typically follows from descriptive research
Observational research may lead to understanding explanatory research
Answer:
I believe your answer is B. Experimental research may lead to understanding descriptive research.
Generally, experimental research is a trial and error method that tests the hypothesis of descriptive research. Descriptive research being the theoretical or studied characters of a topic.
Please let me know if I had this wrong, and I'll do some extra research for you.
What is the mass of 1.9 x 10^22 molecules of CaCO3?
3.2 g CaCO₃
General Formulas and Concepts:Math
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightChemistry
Atomic Structure
Reading a Periodic TableAvogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.Stoichiometry
Using Dimensional AnalysisExplanation:Step 1: Define
1.9 × 10²² molecules CaCO₃
Step 2: Identify Conversions
Avogadro's Number
[PT] Molar Mass of Ca - 40.08 g/mol
[PT] Molar Mass of C - 12.01 g/mol
[PT] Molar Mass of O - 16.00 g/mol
Molar Mass of CaCO₃ - 40.08 + 12.01 + 3(16.00) = 100.09 g/mol
Step 3: Convert
Set up: [tex]\displaystyle 1.9 \cdot 10^{22} \ molecules \ CaCO_3(\frac{1 \ mol \ CaCO_3}{6.022 \cdot 10^{23} \ molecules \ CaCO_3})(\frac{100.09 \ g \ CaCO_3}{1 \ mol \ CaCO_3})[/tex]Multiply/Divide: [tex]\displaystyle 3.15794 \ g \ CaCO_3[/tex]Step 4: Check
Follow sig fig rules and round. We are given 2 sig figs.
3.15794 g CaCO₃ ≈ 3.2 g CaCO₃
Match the special cases of each gas law with its description. A law may be used more than once. In the equations, K is a constant.
A. Boyle's law
B. Charles's law
C. Avogadro's law
D. Dalton's law
____ P1 V1 = P2 V2
____ V/T = k
____ V1 / T1 = V2 / T2
____ V = kn
____ PV = k
____ Ptotal = P1 + P2 + P3 + .
The special cases of gas laws and its description includes:
A. Boyle's law: P1 V1 = P2 V2
B. Charles's law: V/T = k or V1 / T1 = V2 / T2
C. Avogadro's law: V = kn
D. Dalton's law: Ptotal = P1 + P2 + P3 + .
What is gas law?Gas laws are laws that relate a gas's pressure, volume, and temperature. Boyle's law, named after Robert Boyle, states that the pressure P of a gas varies inversely with its volume V at constant temperature, or PV = k, where k is a constant. Charles' law is named after J. -A. -C.
They also include; Gay-Lussac's Law, Avogadro's Law and Dalton's law of partial pressures.
Learn more on gas laws here: https://brainly.com/question/25290815
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_______ mL = 500 cm^3
Answer:
500 mL
Explanation:
500 cm is equal to 500 mL
Gas
% of Volume
7.
N
78
Oz
21
Ar
.9
CO2
.04
Ne
1.0018
He
.00052
CHA
.00017
Kr
.00011
H2
.00006
Using the chart above, which gases make up the majority of the Earth's atmosphere?
HELP ASAP
Answer:
this would be the .04 it is very simple
Explanation:
What kind of scientist would study the the force of a car running into a wall
A. A Chemist
B. A physicist
C. A Botanist
D. A Biologist
Answer:
B. A Physicist
Explanation:
Has 3 valence electrons and 4 energy levels ?
You are looking for an element in the fourth period and a transition metal. As most have about 3 valence electrons. Gallium and Scandium work perfectly.
Answer:
Gallium is the Answer.
Explanation:
How many moles are contained in 539.2 grams of Al(NO3)3
Answer; 2.531 moles
Explanation:
What mantle is forced down and begins to melt?
HELP!
Answer:
magma
Explanation:
Answer:
magma rises through it.
Explanation:
2. Calculate the number of moles of propane you have in 5.78 x1024 molecules of propane = CH
Answer:
Molar mass of C3H8 = C 3 (12.01 g/mol) = 36.03 (g/mol)
H 8 (1.008 g/mol) = 8.064 (g/mol)
44.09 (g/mol)
74.6 g propane x 1 mole propane x 6.022 x 10
23
molecules
44.09 g propane 1 mole propane
= 1.02 x 10
24 molecules propane
Explanation:
what is mean by constituent assembly
Answer:
its a body or assembly of popular elected represenatives
Explanation:
which the purpose of this is to form a representative democracy
hope this helps
HELLPPPPP i need to know ASAPPPPPPPP
What is the process where plants make seeds that grow into new plants
Answer:
Plant fertilization
Explanation:
Hope this helps:) Have a great day
Please give Brainliest if could
When she placed her hand on the side of the container, it felt really cold, but it didn't feel that way before. The temperature had dropped by about 30 degrees Celsius. The substance was now grey and crystallin in structure.
Was this a chemical reaction?
Answer the question (in a complete sentence) Provide evidence to support your claim and describe (reasoning/justify) how the evidence supports the claim.
Answer:
this is a physical reaction
Explanation:
Answer:
this is a physical reaction
Explanation:
In metallic bonds, electrons are referred to as electrons.
Answer:
Metallic bonding may be described as the sharing of free electrons among a lattice of positively charged metal ions. The structure of metallic bonds is very different from that of covalent and ionic bonds. ... In metallic bonds, the valence electrons from the s and p orbitals of the interacting metal atoms delocalize.
Put the following elements in order of increasing first ionization energy (lowest to highest): S, Ca, Mg,
CI
Answer: Ca, Mg, S, Cl
Explanation: general trends are IE increases as the number of electrons in the outermost shell, and decreases as the number of shells (and shielding effect) increases.
S outer 6, shells 3
Ca outer 2, shells 4
Mg outer 2, shells 3
Cl outer 7, shells 3
Ca has 2 outer, 4 shells —> lowest
others have 3shells
Mg 2outer, S 6, Cl 7
please help me need it fast
Answer:
Do you need 3 ways or just one?
1. Temperature.
2. Pressure.
3. Polarity.
Explanation:
Eh hope these help, Idr understand the question but those are 3 ways to increase the solubility of a solid in water.
How does fog rising off water compare to plant growth?
The humidity in the air affects the evapotranspiration rate from the leaf surfaces. ... The use of fog and mist at this time can reduce the air temperature and increase the humidity within the plant canopy without saturating the plant medium. With more oxygen in the root zone, faster rooting occurs.
During spontaneous fission, a nucleus of 25498Cf can produce 11846Pd, four neutrons, and what other nuclide?
Answer: 52Te - Tellurium
Explanation: Radioactivity occurs when an unstable nucleus of an element decompose into a stable element by emitting particles or forms of eletromagnetic energy. There are types of radioactivity and Spontaneous Fission is one of them.
In Spontaneous Fission, the unstable, also called parent, nucleus splits into two smaller nuclei and emitts one or more neutrons.
The reaction spontaneous fission of Cf is represented below.
25498Cf ⇒ 11846Pd + 4n + X
The characteristics of each element of the equation are:
1) The element Cf has atomic mass 254 and atomic number 98.
2) Element Pd has atomic mass 118 and atomic number 46.
3) Neutron is represented as n, has no atomic number and atomic mass 1.
Given these properties, to determine the other nuclide, we have to find out the nuclide's atomic number, as each element in the periodic table has its own atomic number.
At the left side of the equation, atomic number is 98. At the right side, element X's atomic number is
98 - 46 + 0 = 52
In the periodic table, the element with atomic number 52 is Tellurium, whose symbol is Te.
The other nuclide for the spontaneous fission is Tellurium (Te).
0.6 sample an unknown organic acid found in muscle cells is burned in air and found to contain 0.24g of carbon, 0.04g of hydrogen with the rest being oxygen. If the molecular weight of the substance is 90g/mol what is the emperical and molecular formula
Answer:
Molecular formula is, C₃H₆O₃
Empirical formula (with the lowest subscript) → CH₂O
Explanation:
We assume that the organic acid's mass is 0.6 g. We know that, in 0.6 g of compound we have 0.24 g of C and 0.04 g of H, then, we have
(0.6 - 0.24 - 0.04) = 0.32 g of O.
We determine each mol:
0.24 g /12 g/mol = 0.02 mol of C
0.04 g/ 1g/mol = 0.04 mol of H
0.32 g/ 16 g/mol = 0.02 mol of O
1 mol of acid weighs 90 g/mol.
In 0.6 g of acid, we have, (0.6 g / 90g/mol) = 0.0067 moles
Let's find out the formula with rules of three:
0.00667 mol of acid have 0.02 moles of C
1 mol of acid may have (0.02 /0.00667) = 3 mol of C
0.00667 mol of acid have 0.04 moles of H
1 mol of acid may have (0.04 /0.00667) = 6 mol of H
0.00667 mol of acid have 0.02 moles of O
1 mol of acid may have (0.02 /0.00667) = 3 mol of O
Molecular formula is, C₃H₆O₃
We confirm by the molar mass: 12g/mol . 3 + 6 . 1g/mol + 32g/mol . 3 = 90
Empirical formula (with the lowest subscript) → CH₂O
