Answer:
B. convention
Explanation:
hope you get the right answer
What is the mass of 3.5 mol of MgBr2?
Answer:
The answer is 0.0054314469917931.
Explanation:
I assume you are converting between moles MgBr2 and gram. You can view more details on each measurement unit: molecular weight of MgBr2 or grams This compound is also known as Magnesium Bromide.
HELP! URGENTLY NEEDED! I NEED THIS ANSWER IN 5 MINUTES AND PERSON WHO HELPS GET THE ANSWER RIGHT GETS 25 POINTS!!! PLEASE I AM FAILING THIS CLASS AND NEED SO MUCH HELP!!!!
The coefficient/s will balance the chemical equation CH4 +O2 -------» CO2 + H2O is
a
1, 2, 1, 2
b
2, 1, 1, 2
c
2, 2, 1, 1
d
1, 1, 1, 2
Answer:
hey miss
Explanation:
The coefficients : a. 1,2,1,2
Further explanationGiven
Reaction(unbalanced)
CH4 +O2 -------» CO2 + H2O
Required
The blanced equation
Solution
Give a coefficient
CH4 +aO2 -------» bCO2 + cH2O
Make an equation
C, left=1, right=b⇒b=1
H, left=4, right = 2c⇒2c=4⇒c=2
O, left=2a, right=2b+c⇒2a=2b+c⇒2a=2.1+2⇒a=2
The equation becomes :
CH4 +2O2 -------» CO2 + 2H2O
H-H-C=C-H-H + Br—Br —> H-H-Br- C-C-H-Br-H
Answer:
Complexity.
Explanation:
Okay, I am NOT explaining this whole thing, but simply, C2n product.
Don't ask. Just don't.
You have been given a choice of four elements; Lithium, Magnesium, Sulfur, and Bromine. You must decide which two elements would form a compound that has one atom of the metallic atom and two of the non-metallic atom in the final neutral compound. Which choice lists the two atoms with the correct formula for the compound?
A.
Magnesium and Sulfur; MgS2
B.
Lithium and Bromine; LiBr2
C.
Lithium and Sulfur; Li2S
D.
Magnesium and Bromine; MgBr2
The compound formed that has been neutral has been Magnesium and bromine. Thus, option D is correct.
The periodic table has been the arrangement of the elements with increasing atomic number and similarity in the reactivity.
The metals in the periodic table are elements that has been able to accept electrons, and nonmetals are the elements in the table that loses electrons to attain the stable noble gas configuration.
Formation of a neutral compoundThe metal and nonmetal form the neutral compound when there has been the formation of stable compound with the complete configuration.
The magnesium and lithium has been metals, while sulfur and bromine are nonmetals. Bromine has been the element of group 17. It has been able to gain an electron. Sulfur has been the nonmetal and required 2 electrons to complete its octet.
Lithium has been the metal with one valence electron, and magnesium with 2 valence electrons.
The neutral compound to be formed has been consisted of one metal with 2 valence electrons, and 2 nonmetals with 1 valence electrons.
Thus, the compound formed that has been neutral has been Magnesium and bromine. Thus, option D is correct.
Learn more about neutral compounds, here:
https://brainly.com/question/18729158
Cuantos gramos de nitrato de potasio (KNO3) son necesarias para preparar 800ml de solucion al 12 % m/v
Answer:
96 g
Explanation:
Tomando en cuenta que estamos hablando de una solución de Nitrato de potasio cuya concentración es 12% m/V, debemos entonces usar la expresión de %m/V:
%m/V = msto / Vsol * 100 (1)
De esta expresión, debemos despejar la masa de soluto (msto) que es precisamente el valor que estamos buscando. Al hacer el despeje tenemos:
msto = %m/V * Vsol / 100 (2)
Ahora solo nos queda sustituir los valores dados y resolver:
msto = 12 * 800 / 100
msto = 96 g de KNO₃Espero te sirva.
Multiple Choice
Identify the choice that best completes the statement or answers the question.
1. Pressure is the force
per
unit
a. volume.
b. surface area.
c. length
d. depth
Answer:
A or B
Explanation:
What are some of the properties of snow
Explanation:
density, albedo, light e-folding depth, specific surface area (SSA), crystal size and shape, thermal conductivity, permeability, diffusivity,
A 100 kg rock is broken into five smaller rocks for a garden. What is the total mass of all five smaller rocks?
Answer:
100 kg
Explanation:
you cannot destory mass so, it's going to be the same just broken up pieces
The general oxidation of a metal ( M ) by a copper ion ( Cu2+ ) is M(s)+Cu2+(aq)⟶M2+(aq)+Cu(s) All the listed metals can be oxidized by Cu2+ ions but the reactions will occur at different rates. Arrange the metals based on how quickly each oxidation by Cu2+ ions should occur.
Answer:
Ba, Ca, Mn, Ni
Explanation:
why is a moving car an example of kinetic energy
Answer:
the car is moving right so what does kinetic energy mean it means and object moving what is the car doing the car is MOVING
Prokaryotes store their DNA in a nucleus.
True
or false
True or false: when balancing equations you are allowed to change the subscripts of molecules only
Answer:
kabooom
Explanation:
How many moles are in 6.777 x 1023 atoms of CO2. Watch your significant figures. Question 2 options: 1 atoms CO2 1.125 moles CO2 1.13 moles 1.13 atoms CO2
Answer:
1.13moles
Explanation:
Given parameters:
Number of atoms = 6.777 x 10²³ atoms
Unknown:
Number of moles = ?
Solution:
A mole of a substance contains the avogadro's number of particles
6.02 x 10²³ particles = 1 mole
6.777 x 10²³ atoms will contain [tex]\frac{ 6.777 x 10^{23} }{6.02 x 10^{23} }[/tex] = 1.13moles
Which is an acceleration?
A. Flying at 200 miles/hr
B. Speed changing from 2 km/hr to 5 km/hr
C. Moving north at 40 km/hr
D. Moving 8 meters in 2 seconds
How many moles of NaCl are in 2.35 liters of a 4.67 M solution?
There are 10.97 moles of NaCl in 2.35 liters of a 4.67 M solution.
HOW TO CALCULATE NUMBER OF MOLES:The number of moles of a substance can be calculated by multiplying the molarity by the volume. That is;no. of moles = volume × molarity
According to this question, there are 2.35 liters of a 4.67 M solution. The number of moles is calculated as follows:no of moles = 2.35L × 4.67M
no of moles = 10.97mol
Therefore, there are 10.97 moles of NaCl in 2.35 liters of a 4.67 M solution.
Learn more about no. of moles at: https://brainly.com/question/14919968
1. What is the mass of zinc in your penny?
Answer:
97.5%
Explanation:
the US mint specifies pennies as 2.5% copper in 97.5% zinc
During vaporization, heat energy is:
Answers:
Added
Released
Stays the same
Answer:
During vaporization, heat energy is added.
An apple, potato, and onion all taste the same if you eat them with your nose plugged
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✩✩✩
Hey, love!
You only get that little quote if your streak gets higher so, congrats on that!
Keep it up, stay lovely!
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Which of these is not a response to internal stimuli?
A. wearing sunglasses to to protect eyes from UV rays
B. breathing hard when exercising because of a drop in oxygen levels
C. eating when hungry
D. drinking when thirsty
Answer:
A. wearing sunglasses to to protect eyes from UV rays
Explanation:
Your eyes are outside of your body, meaning external. All the other choices deal with internal organs.
Please help I need to get this done before it's due-
The distance for star X is not given. How far away do you think it is from earth?
Give an example of gravitational potential
A raised weight.
Water that is behind a dam.
Have a nice day!
Answer:
When something has a high position, its gravitational potential energy is high. For example, a book on a high bookshelf has higher potential energy than a book on the bottom shelf because it has farther to fall. ... A book on a table before it falls. A child at the top of a slide.
Explanation:
U=m g h
why do plants provide animals with fruit such as strawberries, apples, and mangoes
Answer:
to increase their number of species on the Earth and want to go long and long
If two people have sex in certain positions then pregnancy is not possible because of gravity
Answer:
true <3
Explanation:
Give an example of an object that has potential energy
Answer:
A book on a shelf
Explanation:
Dana is playing with her friends. They ride their scooters 20 meters down the road North. They stop to grab a drink of water. Feeling tired, they turn around and ride their scooters 20 meters south
What is Dana and her friend’s displacement
Answer:
what is the displacement
Explanation:
Which of the following best describes what happens when hydrogen and oxygen to form water?
Atoms are changing place with other atoms
Hydrogen and oxygen are undergoing change of states.
Hydrogen and oxygen are stable condition
Atoms are combining to form molecules
Atoms are combining to form molecules
How far does a car travel in 0.75 hr if it is moving at a constant speed of 88km/hr?
Answer:
66 km.
Explanation:
88 km / 1 hour = 66 km / 0.75 hours.
You need to just multiply 0.75 by 88.
The answer is 66 km.
How many moles of nitrogen (N2) are needed to produce 9.60x10^24 molecules
of nitrogen dioxide (NO2)? *
The number of moles of Nitrogen : == 7.975
Further explanationGiven
9.60x10²⁴ molecules of nitrogen dioxide (NO2)
Required
The number of moles
Solution
Reaction
N2 + 2O2 → 2NO2
moles of NO2 :
= 9.6 x 10²⁴ : 6.02 x 10²³
= 15.95
From the equation, mol N2 :
= 1/2 x mol NO2
= 1/2 x 15.95
= 7.975
The number of molecules :
= 8 x 6.02 x 10²³
= 4.816 x 10²⁴
Is C6H1206 an element or compound
C6H1206 is a compound (of glucose).
how many moles are in 1.2 x 10^26 molecules of calcium hydroxide
Answer:
199.26 or with sig figs 2.0 x 10^2
Explanation: you take the # of molecules and divide it by avagadros number which is 6.022141 x 10^23
