Answer:
opstion b
Explanation:
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It would dissolve. Hence, option B is correct.
What are mixtures?A mixture is composed of one or more pure substances in varying
compositions.
Solid magnesium chloride is a poor conductor of electricity because the ions aren't free to move. It undergoes electrolysis when the ions become free and molten state.
Magnesium chloride dissolves in water to give a faintly acidic solution.
Hence, option B is correct.
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How is ethanol different from carbon dioxide?
A: Ethanol is made of oxygen.
B: Ethanol is made of hydrogen.
C: Carbon dioxide only has two atoms.
D: Carbon dioxide only has one atom.
Answer:
B
Explanation:
Ethanol is C2H6O. Carbon diozidex is CO2. Ethanol has hydgrogen, where carbon dioxide does not.
Is c6h8 molecular or empirical
Answer:
Molecular
C6H8 has the empirical formulae as C3H4
Approximately what is the minimum temperature needed to dissolve 10 g of KNO3 in 100 g H2O?
Round your answer to the nearest whole number and type in the number only; no units.
Answer:(a) Potassium nitrate will begin to crystallise at about 56 °C, when its solubility is 100 g/100g water.
Explanation:
How many atoms are in 1.00 moles of glucose
Answer:
1 molecule of glucose contains 6 atoms
Explanation:
Answer:
there are 6 atoms :)) I think so
Which is a TRUE statement about
London Dispersion Forces?
ELECTRON moving causes partial
positive & negative charges creating
attraction
PROTON movement causes partial
positive & negative charges creating
attraction
Answer:
The London dispersion force is a temporary attractive force that results when the electrons in two adjacent atoms occupy positions that make the atoms form temporary dipoles. Dispersion forces are present between any two molecules (even polar molecules) when they are almost touching.
Thus PROTON movement causes partial positive & negative charges creating
attraction will be crrt
Which object has the greatest K.E.?"
top of a hill
bottom of a hill
middle of a hill
Answer: the answer is A
Explanation:
The answers is A
Question: If red dye is added to cold water and blue dye is added to warm water, which dye will
spread out quicker?
Answer:
Blue dye spreads out quicker
Explanation:
This is because the dye gets spread out by water molecules. Warm water has faster moving water molecules than cold water.
how much faster will ammonia vapor travel across a room then carbon dioxide
a. 0.622
b. 1.39
c. 7.55
d. 1.61
Answer:
D) 1.61 times faster
Explanation:
[tex]vrms_{NH3}[/tex] = √(3)RTM
R constant= 0.08206
T=constant, so in this problem we dont need a value for it
M=17.031 g/mol
√(3)(0.08206)(17.031)= 2.047
[tex]vrms_{CO2}[/tex] = √(3)RTM
R constant= 0.08206
T=constant, so in this problem we dont need a value for it
M= 44.01 g/mol
√(3)(0.08206)(44.01)= 3.29
Since we are trying to measure how much faster NH3 will be, we have to realize that mass and speed have an inverse relationship.
So instead of doing (2.047)/(3.29) = 6.22
we have to flip the values to get (3.29)/(2.047)= 1.61
‼️SHOW ALL STEPS‼️ If 14.4 grams of iron reacts with hydrochloric acid, how many grams of hydrogen gas will be produced?
The unbalance equation for the reaction is: _ Fe(s) + __ HCl(aq)
FeCl3(aq) + -
H2(e)
Answer: 0.771 g of [tex]H_2[/tex] will be produced
Explanation:
To calculate the moles :
[tex]\text{Moles of solute}=\frac{\text{given mass}}{\text{Molar Mass}}[/tex]
[tex]\text{Moles of} Fe=\frac{14.4g}{56g/mol}=0.257moles[/tex]
The balanced chemical reaction is:
[tex]2Fe(s)+6HCl(aq)\rightarrow 2FeCl_3(aq)+3H_2(g)[/tex]
According to stoichiometry :
2 moles of [tex]Fe[/tex] produce = 3 moles of [tex]H_2[/tex]
Thus 0.257 moles of [tex]Fe[/tex] will produce=[tex]\frac{3}{2}\times 0.257=0.385moles[/tex] of [tex]H_2[/tex]
Mass of [tex]H_2=moles\times {\text {Molar mass}}=0.385moles\times 2g/mol=0.771g[/tex]
Thus 0.771 g of [tex]H_2[/tex] will be produced
which of these elements has the smallest atomic radius?
a) F
b) Cl
c) Br
d) i
Answer:
F has the smallest
Explanation:
The trend is that atomic radius increases as you move down a group
Hello, your answer is down below!
A. F
I hope this helps mark brainlist if im correct!
what properties of aluminum make it particularly useful in drinking cars
Answer:
in doesn't rust which sends meatel into the drink
Explanation:
u are welcome
which is the SI unit used to measure the temperature of a substance
Answer:
Kelvin
Explanation:
Answer:
Kelvin
Explanation:
Sound travels faster through solids than it does through either liquids or gases a student could verify this statement by
Group of answer choices.
A. Distance that sound travels through a solid, a liquid, and a gas.
B. Pitch of sound when it passes through a solid, a liquid, and a gas.
C. Distance sound travels through a solid, a liquid, and a gas at varying temperatures.
D. Time required for sound to travel a set distance through a solid, a liquid, and a gas.
Answer:
D. Time required for sound to travel a set distance through a solid, a liquid, and a gas.
Explanation:
Sound are mechanical waves that are highly dependent on matter for their propagation and transmission.
Sound travels faster through solids than it does through either liquids or gases. A student could verify this statement by measuring the time required for sound to travel a set distance through a solid, a liquid, and a gas.
Mathematically, the time required for sound to travel is given by this formula;
[tex] Time = \frac {distance (x)}{speed (v)} [/tex]
Hence, the time taken for sound to travel through each medium (solid, liquid and gas) would be measured, recorded and compared to one another.
Which of the following nuclei would be the most stable? O A. 70 protons, 98 neutrons O B. 70 protons, 87 neutrons O C. 70 protons, 94 neutrons O D. 70 protons, 91 neutrons
The stability of a nucleus is dependent on the neutron - proton ratio. The most stable nucleus is 70 protons, 87 neutrons.
Stability of nucleiA nucleus will be stable if the neutron proton ratio is less than 1.5 but greater than 1. This range is generally called the band of stability.
Now, we know that the most stable nucleus will have a lower neutron - proton ratio and that is the nucleus contaning 70 protons, 87 neutrons.
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Answer: A. 70 protons, 98 neutrons
Explanation: Got it on the quiz
Fe2O3 the valance number
Answer:
3
Explanation:
Answer:
Valence of Fe-3
Valence of O-2
Which object would have a greater velocity change?
Answer:
The object with less mass will have a greater change in velocity
Explanation:
Answer:
the one with the smaller object mass becaise you get more force upon impact with less effort to move
In the context of the movie, what is the best synonym for "property?
Answer:
opiste of the word
Explanation:
What is the correct name for (NH4)4P407?
Answer:
Diammonium hydrogen phosphate
Explanation:
hear me out!! am I the only one who gets headaches on the daily? why do I get them?
Answer:
Same i have headaches daily, maybe from infections such as meningitis or Intracranial pressure that's either too high or too low or id.k.
CH3CH2C=CH2)
O=O
?
What is the functional group for this compound
Answer:
ketone
Explanation:
please mark me as brainlist
I would appreciate help on writing an equalibrium constant expression.
Explanation:
it would be
[tex]kc = (products) \div (reactants) \\ kc = \frac{nh3)^{2} \times (co2) \times (h2o)}{(nh4)^{2}co3 }[/tex]
this the expression however when you are working out Kc do not include nh4^2co3 as it is a solid and it's concentration remains constant so remember to remove the nh4^2co3 and usage would just have the top part to work out ok
How many atoms for each element in this compound:
Pb3(PO4)2
Pb =
P=
O=
Answer:
In the compound Pb3(PO4)2, there are 3 Pb atoms, 2 P atoms, and 8 O atoms.
Let me know if this helps!
There are 3 atoms of pb(Lead), 2 atoms of P(Phosphorus) and 8 atoms of O(Oxygen) are present in Pb3(PO4)2.
What is an atoms?An atom is the smallest constituents of matter that can neither be created nor be destroyed.An atom It consists of a central nucleus, usually surrounded by electrons. Each electron is negatively charged. The nucleus is positively charged, and contains relatively heavy particles known as protons and neutrons.What are Compounds?
A compound is a combination of atoms of same or different types of an element in a fixed ratio.
In the given question Pb3(PO4)2 is a compound of lead phosphate which is made up of 3 atoms of pb(Lead), 2 atoms of P(Phosphorus) and 8 atoms of O(Oxygen).
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A reaction occurs that results in more products than reactants. What type of reaction is
'this?
Answer:
Endothermic reaction
Explanation:
Endothermic means that energy is absorbed leading to more product.
The reaction in which the products can return back to reactants is called reversible reaction. The reaction where more products are formed is called endothermic reaction where the products are more stable.
What is endothermic reaction?An endothermic reaction is a reaction where, the reactants absorbs heat energy and to produce new products. The term for heat absorption is called endothermic. Whereas the reaction in which heat is evolved is called an exothermic reaction.
In endothermic reaction, reactants gains thermal energy to overcome the energy barrier for the reaction. Therefore the activation energy for products will also be lower indicates their stability.
The enthalpy change that the change in heat absorbed for the endothermic reaction will be positive that is ΔHrxn is +ve. Endothermic phase change involves an increase in entropy. Hence, the reaction that result in more products than reactants is endothermic.
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Write the word and balanced chemical equations for the reaction between:
Sulfuric acid + aluminum hydroxide
Answer:
Alumminum hydroxide reacts with sulfuric acid as follows: 2Al(OH)3+H2SO4-->Al2(SO4)+6H2O.
Explanation:
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what is the name of the compound Cu(IO3)
Answer:
Copper Iodate
Cu(IO3) is Copper Iodate
Which of the following has the highest in chemical energy (energy stored in chemical bonds)?
Question 2 options:
ADP
ATP
ASP
APP
Answer:
ADP
Explanation:
1.2 moles of oxygen represents how many atoms of oxygen
Answer:
2 × (6.022 × 10 23) Na atoms, or 1.2044 × 10 24 Na atoms.
Explanation:
One mole of oxygen contains 6.02 × 10²³ oxygen atoms or formula units. Hence, moles of contains 7.22 × 10²³ .
What is one mole ?One mole of a substance is its amount containing 6.02 × 10²³ atoms or molecules. This number is called Avogadro number. One mole of every elements contains Avogadro number of atoms.
Similarly one mole of every compound contains 6.02 × 10²³ molecules. The mass of one mole of compound is called its molar mass.
Oxygen is 16th element in periodic table. One mole of oxygen contains 6.02 × 10²³ oxygen atoms . Hence number of atoms of 1.52 moles is:
1.2 × 6.02 × 10²³ = 7.22× 10²³ .
Hence, there will be 7.22 × 10²⁴ oxygen atoms in 1.2 moles.
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1. What type of chemical reaction is the following equation?
AIBr3 +K → KBr + AI
Answer:
Explanation:
It is called a single replacement. K is one of the few chemicals that can force Aluminum to take on electrons. The balanced equation is
AIBr3 +3K → 3KBr + AI
Answer: Single Displacement (Substitution)
Explanation:
Aluminum Bromide + Potassium = Potassium Bromide + Aluminum
How will you prepare hydrogen from zinc and dilute acid.
А
What is the chemical symbol for Hydrogen?
A.OCH
B.оне
C.Н
D.он20
Answer:
the answer to this is ( H )