the answer to this equation is " double replacement "
hopefully i helped
Answer:
9 moles of reactants chemically change into 11 moles of product
Explanation:
An atom of element Be has four protons, four electrons, and five neutrons.
Which element below could be an isotope of this atom?
Answer:
b i took the edge test
Explanation:
A soccer ball was kicked it had the mass of .42 kg and accelerated at 25m what is the force
What is the mass of 7.00 moles of H2O2
Answer:
0.206 mol H₂O₂
General Formulas and Concepts:
Chemistry - Atomic Structure
Reading a Periodic TableUsing Dimensional AnalysisExplanation:
Step 1: Define
7.00 moles H₂O₂
Step 2: Identify Conversions
Molar Mass of H - 1.01 g/mol
Molar Mass of O - 16.00 g/mol
Molar Mass of H₂O₂ - 2(1.01) + 2(16.00) = 34.02 g/mol
Step 3: Convert
[tex]7.00 \ g \ H_2O_2(\frac{1 \ mol \ H_2O_2}{34.02 \ g \ H_2O_2} )[/tex] = 0.205761 mol H₂O₂
Step 4: Check
We are given 3 sig figs. Follow sig fig rules and round.
0.205761 mol H₂O₂ ≈ 0.206 mol H₂O₂
Answer:
238.14
Explanation:
2 H + 2O
2(1.01) + 2(16.00) = 34.02
34.02*7 = 238.14
238.14
PLS PLS PLS HELP ME I WILL MARK Y OUT BRAINLYEST JUST PLS HELP ME :((
Which two reactions are faster than the others?
A. Methane burns in air that contains oxygen.
B. Silver tarnishes in air that contains hydrogen sulfide.
O C. A steel ship rusts in ocean water.
U
D. Hydrogen gas and oxygen gas react explosively to form water.
Answer:
i think its Hydrogen gas and oxygen gas react explosively to form water. and . Methane burns in air that contains oxygen.
Explanation: Mine was a little bit different than yours please forgive me if I'm wrong I chose answers that was similar to mine
Methane burns in air that contains oxygen and Hydrogen gas and oxygen gas react explosively to form water. These two reactions are faster than the others.
What is methane ?Chemically speaking, methane has the formula CH4. The simplest alkane and the primary component of natural gas, it is a group-14 hydride. The amount of oxygen breathed from the air might be decreased by high methane levels. This may include headaches, facial flushes, slurred speech.
Unscented, colorless, and combustible, methane is a gas. It is mostly used as fuel to produce heat and light. It is also employed in the production of organic compounds. Methane is frequently found in landfills, marshes, septic tanks, sewers, and other places where natural materials decompose.
Suffocation can result from high methane concentrations in enclosed spaces because methane reduces the amount of oxygen in the air. Lack of oxygen can cause headaches, nausea, lightheadedness, and unconsciousness.
Thus, option A and D are correct.
To learn more about methane, follow the link;
https://brainly.com/question/2127750
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using your personal feelings to explain or describe is being..
Answer:
deep ............................
Answer:
( A Heart) fragile clueless of what love is then one day... somebody comes, somebody comes and you get a feeling a feeling of happiness a feeling of pure love not like any crush! Then one day... you lose them, you lose them and they are gone at first you feel cold like a piece of you just left the person that mad you feel this joy! You were just having another normal day but then you met then after that day you were happy but that one person! That one person made you So happy if you lost them you cant imagine how you could go what was life Before. so the second they leave it feels like your heart lost a piece that could only be filled with love! over the days your'e heart starts to feel numb and feel so lost you wonder and wonder. ( The heart)
Explanation
Interactivity: Hot on the Inside
Beryllium has an atomic number of 4 and an atomic mass of 9. How many neutrons does Beryllium have?
Answer:5
Explanation:
Help ASAP
Avocados have a pH of 6.27. Avocados are categorized as...
O Base
O An Acid
O Neutral
Answer:
Base
Explanation:
How many moles of H3PO4 are contained in 150.0 mL of 18.1 M H3PO4?
Answer:
Number of moles = 2.72 mol
Explanation:
Given data:
Number of moles of H₃PO₄ present = ?
Molarity of solution = 18.1 M
Volume of solution = 150.0 mL (150/1000 = 0.15 L)
Solution:
Molarity is used to describe the concentration of solution. It tells how many moles are dissolve in per litter of solution.
Formula:
Molarity = number of moles of solute / L of solution
By putting values,
18.1 M = number of moles / 0.15 L
Number of miles = 18.1 M × 0.15 L
Number of moles = 2.72 mol
is cleaning a penny a chemical change or physical change
Answer:
physical
Explanation:
Which of the following changes on different celestial objects due to the force of gravity?
Mass
Weight
Height
Width.
Which sphere is dependent on all the other spheres in order to exist?
hydrosphere
lithosphere
atmosphere
biosphere
Answer:
biosphere
Explanation:
Living things need water (hydrosphere), chemicals from the atmosphere, and nutrients gained by eating things in the biosphere.
ANSWER THE QUESTION BELOW FOR BRAINLEST AND 10 POINTS
Answer:
C
Explanation:
It just is, if you look online and conduct research you will see that compounds look just like number 3. It cannot be A or B.
\Which layer is between the crust and the asthenosphere?
Answer:
Lithosphere
Explanation:
Answer:
Lithosphere
Explanation:
The Lithosphere is the outermost layer of the Earth of about 100km thick and it is a rigid layer that includes the brittle upper portion of the mantle and the crust. Lithosphere is the hard outer region which includes all of the crust and the uppermost mantle.
How many moles are in 150.0 grams of Fe2O3
Answer:
its 150 hope this helps
Explanation:
What happens when balanced forces act on an object at rest?
Answer:
Balanced forces do not cause a change in motion.
The result is no motion. Balanced forces can cancel each other out. Any time there is a balanced force, the object does not move.
Explanation:
Answer:
The result is no motion. Balanced forces can cancel each other out. Any time there is a balanced force, the object does not move.
Explanation: MARK MOST BRAINLIEST PLEASE
Please answer correctly !!!!!!!!!!! Will mark brainliest !!!!!!!!!!!!!!!!!!
Answer:
C
Explanation:
Hope this helps Mrs. or Sir
Guys please help me.
Explain how an Ion of oxygen is different from an atom of oxygen and how are they similar
Explanation:
An atom is the smallest indivisible particle of any substance that takes part in a chemical reaction.
All atoms are identified by the number of protons in them. Protons are the positively charged particles in an atom.
Ions are atoms that have either lost or gained electrons. Therefore, they become charged. Atoms are neutral particles where the number of protons and electrons are the same.Therefore, atoms and ions are similar because the atom and ion of an element have the same number of protons but differs in the number of electrons they carry.
PLEASE HELP WILL GIVE BRAINLEST
Which relationship explains how the water can boil at room temperature?
A Lower air pressure results in a lower boiling point
B. Lower air temperature results in a lower boiling point
C. Lower air pressure results in a higher boiling point
D. Lower at temperature results in a higher boiling point
Answer:
Option A.
Lower air pressure results in a lower boiling point
Explanation:
This is because in an open system, the lower the pressure the lesser the energy that will be required for boiling point. The is little or no collision of air molecules with the surface of the liquid
But if there is increase in pressure, more energy will be required to get to boiling point because there will be strong collision between air molecules and surface of the liquid.
Lipase is an enzyme that breaks down the fat in food molecules into smaller molecules. Which of the following best describes the function of lipase?
(PLS HELP)
Describe three of your favorite foods. How do they change phases of matter when they are heated?
Answer:
ice.
Explanation:
it becomes a liquid
What is the mass in grams of 5.90 mol C3H18?
673 g
0.0512 g
19.4 g
389 g
3.55 x 1024
Answer:
319
Explanation:
The molecular mass of C3H18 can be found by adding up the molecular weights of carbon and hydrogen so, (12.01 x 3) For Carbon and (1.008x18) for hydrogen. You will find it is 54.174g/mol.
To find grams muliply g/mol by mols so 5.9 x 54.174= 319 i didnt see any errors with my math so maybe you clicked 8 by accident but i may just be wrong
State three uses of oxidation number
Answer:
Explanation:
1. To identify what's been oxidised and what's been reduced in a redox reaction
2. In naming compounds
3. To work out reacting proportions in titration reactions
explain what a convection current is?
who ever sees this I hope you have a wonderful day!
Answer:
Convection currents are flowing fluid that is moving because there is a temperature or density difference within the material.
Because particles within a solid are fixed in place, convection currents are seen only in gases and liquids. A temperature difference leads to an energy transfer from an area of higher energy to one of lower energy.
pls pls answer questions for chem final within 45 mins i will give brainliest
Why is a map considered a model?
Answer:
Every map is a representation of reality, thus a model in the broadest sense. Sometimes mapping is distinguished from modelling by stating that mapping is a simple representation of reality, while modelling is trying to cover more complexity in reality.
Explanation:
if you started with 2.34 grams of methane and 8.32 grams of oxeygyn and the combustion reaction went to completion how many grams of CO2 would be produced
Answer:
Mass of CO₂ produced = 5.72 g
Explanation:
Given data:
Mass of methane = 2.34 g
Mass of oxygen = 8.32 g
Mass of CO₂ produced = ?
Solution:
Chemical equation:
CH₄ + 2O₂ → CO₂ + 2H₂O
Number of moles of methane:
Number of moles = mass/molar mass
Number of moles = 2.34 g/ 16 g/mol
Number of moles = 0.146 mol
Number of moles of oxygen:
Number of moles = mass/molar mass
Number of moles = 8.32 g/ 32 g/mol
Number of moles = 0.26 mol
Now we will compare the moles of carbon dioxide with oxygen and methane.
CH₄ : CO₂
1 : 1
0.146 : 0.146
O₂ : CO₂
2 : 1
0.26 : 1/2×0.26 = 0.13 mol
Less number of moles of CO₂ are produced by oxygen thus oxygen will react as limiting reactant.
Mass of CO₂:
Mass = number of moles × molar mass
Mass = 0.13 mol × 44 g/mol
Mass = 5.72 g
the chemical properties of calcium are most similar to the chemical properties of
Answer:
strontium and barium
Explanation:
Answer:
Calcium is a chemical element with the symbol Ca and atomic number 20. As an alkaline earth metal, calcium is a reactive metal that forms a dark oxide-nitride layer when exposed to air. Its physical and chemical properties are most similar to its heavier homologues strontium and barium.
Explanation:
what is the chemical name for carbon?