Answer:
Water and Salt
Explanation:
A neutralization reaction occurs when an acid and a base react to produce water and a salt, and it entails the formation of water from the mixture of H+ and OH- ions.
Answer:
NaCl and water is formed when acid reacts with base
What is the percent composition (by mass) of MgBr2?
Answer:
13.2% Mg, 86.8% Br
Explanation:
Mg has a molar mass of 24.31g/mol.
Bromine has a molar mass of 79.90 g/mol.
There is one mole of Mg and two moles of Br in the compound:
79.90x2 + 24.31 = 184.11
So the total molar mass of MgBr2 is 184.11.
A percent tells us a part of a whole, so we will divide each part of the mass into the whole mass.
24.31g Mg / 184.11g MgBr2 = .132
159.8g Br / 184.11g MgBr2 = .868
Multiply these decimals by 100 to make them into a percent.
.132 x 100 = 13.2% Mg
.868 x 100 = 86.8% Br
50g of potassium chloride is dissolved in 500 cm3 of water. Calculate the concentration of the solution. Give your answer in g/dm3
can someone pls help me answer e-j given the instructions above, thank youu
Answer:
e. Not balanced C and O
f. Balanced
g. Balanced
h. Unbalanced Al and O
i. Balanced
j. Balanced
Second part
a. 2
b. 2 and 2
c. For O is 5 while H20 is 4
Explanation:
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Based on what you have learned about the units for measuring thermal energy, complete the following passage.
The unit often used in chemistry and physics to measure energy, such as for work or electrical current, is the
. We can also use this unit, as we did in this lab, for measuring
. This is a property that is quantified by the energy needed per
of material to raise the temperature by one
. The unit for this measure is therefore
.
Answer:
1.joule 2.specific heat 3.gram 4.degree Celsius 5.J/g°CExplanation:
I did the lab
Thermal energy is represented in the units joules J. It is the energy needed to raise the temperature by one degree celsius.Per gram this energy is called as specific heat capacity with the unit J/°Cmol.
What is heat capacity?Heat capacity of a substance is the heat energy required to raise the temperature of the substance by one degree celsius.
If the heat capacity is measure per one mole of a substance it is called specific heat capacity. It is an intensive property whereas heat capacity is an extensive property.
The given passage can be completed as follows:
The unit often used in chemistry and physics to measure energy, such as for work or electrical current, is Joule (J). We can also use this unit, as we did in this lab, for measuring heat capacity.
This is a property that is quantified by the energy needed per one gram of material to raise the temperature by one degree celsius.The unit for this measure is therefore J/°Cg.
To find more about heat capacity, refer the link below:
https://brainly.com/question/28921175
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The chemical formula for gold (III) oxide
ionic compounds
Answer:
Gold(III) oxide (Au2O3) is an inorganic compound of gold and oxygen with the formula Au2O3. It is a red-brown solid that decomposes at 160 °C. (Au203 <---)
what is the percent composition of potassium phosphate? show your work
Answer:
35.62%
Mass percent composition of K = 0.3562 x 100% Mass percent composition of K = 35.62%
Explanation:
What is energy measured in
Answer:
The unit of energy you measure in is joule.
If 0.0015 moles of NaOH is dissolved in 11 L of water, what is the pH of the
solution?
Answer:
pH = 10.15
Explanation:
NaOH is a strong base so it dissolves completely.
Calculate your [OH-] first by dividing the moles of OH- by the volume.
0.0015 mol OH- / 11 L = 0.00014
Then, calculate the pOH:
pOH = -log[OH-] = -log(0.00014) = 3.85
pOH + pH = 14, so pH = 14 - pOH = 14 - 3.85 = 10.15
Ohio Achievement Test Coach Science, Grade 5
10. Bob first blows whistle hard. Then he blows the same whistle gently. What
changed when Bob blew the whistle the second time?
POSTTEST
A pitch
B. volume
C. pitch and volume
D. frequency
The core of earth is made of iron and nickel the outer core is so hot that it melts metal. The inner core is solid. What causes these diffrences
Answer:
The inner core is solid by intense pressure of all the layers above it.
Explanation:
The inner core is made up of heavy elements such as iron and nickel. It therefore possesses an unusually high pressure that makes the expanded inner core which arose from effects of high temperature to be nullified.
Thus, we can say that the inner core is solid by intense pressure of all the layers above it.
Which answer choice describes all nonmetals? A. All of the elements of Period 2 in green boxes B. Hydrogen and all of the other elements in orange boxes C. All of the elements of Group 18 in orange boxes D. Hydrogen and all of the elements in blue boxes
which of the following represents the atoms of 2 different elements?
Answer:
B
Explanation:
Which is an example of a double
replacement reaction?
2Na+ Cl2 + 2NaCl
H2SO3 → H20 + S02
2K + 2H20 – 2KOH + H2
NaCl + AgF-NaF + AgCI
A mixture of four gases exerts a total pressure of 960
mm Hg. Gase A each exert 120 mm Hg. Gas B exerts
50 mm Hg. What pressure is exerted by gas C?
Omitted question:I think you mean Gas A and D each exert 120 mm Hg, if Gas D has a different value , just lug it into he equation as shown below and solve.
Answer:Gas C= 670mmHg
Explanation:
According to Dalton law of partial pressure
The total pressure of a mixture of gases is the sum of the pressures of each gas and can be illustrated as
Pressure total=P1+P2+… +Pn.
Total Pressure = Gas A + Gas B + Gas C + Gas D + Gas...
Now we have
Total Pressure = 120 mm Hg + 50mm Hg + Gas C + 120 mm Hg
960mmHg = 120 mm Hg + 50mm Hg + Gas C + 120 mm Hg
960mmHg =290mmHg +Gas C
Gas C =960mmHg -290mmHg
Gas C= 670mmHg
Which of the following represents the molecules of one compound and
atoms of one element?
Answer:
i think its b.c but I'm not sure
Answer:
A
Explanation:
A is element as all of them look the same
b is mixture of atoms
C is mixture of atoms and compounds
D is just atoms
E is mixture of element and compound
Consider the redox reaction below. Upper M g (s) plus Pper f e superscript 2 plus (a q) right arrow upper M g superscript 2 plus (a q) plus upper F e (s). Which equation is a half reaction that describes the reduction that is taking place?
Answer: [tex]Fe^{2+}(aq)+2e^-\rightarrow Fe(s)[/tex]
Explanation:
Oxidation reaction is defined as the reaction in which a substance looses its electrons. The oxidation state of the substance increases.
Reduction reaction is defined as the reaction in which a substance gains electrons. The oxidation state of the substance gets reduced.
[tex]Mg(s)+Fe^{2+}(aq)\rightarrow Fe(s)+Mg^{2+}(aq)[/tex]
The oxidation half reaction is:
[tex]Mg(s)\rightarrow Mg^{2+}(aq)+2e^-[/tex]
The reduction half reaction is:
[tex]Fe^{2+}(aq)+2e^-\rightarrow Fe(s)[/tex]
Answer:
A
Explanation:
edge
which situation best represents convection
Answer:
A hot air balloon taking off
Explanation:
4. Explain how radioactive isotopes are used to detect health problems.
Potassium manganate(VI), K2MnO4, can be made to react with water,
forming potassium permanganate, KMnO4, potassium hydroxide,
KOH, and hydrogen gas. This reaction is used in industry to produce
potassium permanganate, which is widely used in analytical chemistry.
Write the balanced equation for this reaction
Use the Word Correctly in a Sentence
Ion
help please see attached file
Answer:
balanced equation of glucose
6CO2 + 6H2O----------C6H12O6 + 6O2
in the presence of sun light.
A student makes observations about a piece of copper. Which
observation describes a chemical property of the copper? (*hint: anything
relating to "measurements" of something is a physical property) *
A. it has a mass of 63.546 grams
B. corrosion occurs when it is exposed to air
C. it has a density of 8.96 g/cm^3
Answer: b
Explanation:
For a solution, [H+] = 3 x 10-11M.
What is the pH?
Answer:
pH≈10.5
Explanation:
-log(3 x 10-11)≈10.5
The following statements were stated by a politician who was paid by the nuclear energy lobby in a debate in favor of nuclear energy:
a. Nuclear energy doesn’t produce a byproduct because the atoms disappear.
b. Nuclear energy produces no polluting gas in its reaction.
c. Nuclear energy does not contribute to global warming.
d. Nuclear energy has low mining and transportation effects on environment.
Which statement is false and should not be used to argue in favor of nuclear energy?
A) Statement A
B) Statement C
C) Statement D
D) Statement B
Answer:
d
Explanation:
the best state ment is d lol
Which 0.1 M solution has a pH greater than 7?
w
1. C6H1206
2.CH3COOH
3.КСІ
4.KOH
Answer:
4) KOH
Explanation:
Trust
0.1 M KOH has a pH greater than 7.
What is pH?
The pH of a solution is a measure of hydrogen ion (H+) concentration, which is, a measure of acidity.
What is POH?The pOH of a solution is measure of hydroxide ions (OH).which is a measure of basicity.
The pH of
CH3COOH is 2.88..КСІ is 7KOH is 12∴According to the question the pH greater than 7 is KOH
Learn more about pH here: https://brainly.com/question/172153
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Does anybody know how to do this if so please help !
Answer:
add x to 7 and divide by 3
Explanation:
easier formula
Waste water from nuclear power plants is generally ?
☁️ Answer ☁️
Waste water from nuclear power plants is generally: radioactive.
Hope it helps.
Have a nice day noona/hyung
The amount of solar radiation changes due to the
WILL MARK BRAINLIEST!!
Due to the variations in the sun-earth distance.
Hope it helps *-* ANSWER NEEDED ASAP!!
How many grams of Cl2 {molar mass = 70.9 g/mol} gas can be produced
when 0.98 L of HCl reacts with an excess of O2 at STP?
4HCI (g) + O2 (g) --> 2012 (g) + 2H20 (g)
[remember sig figs and don't include units in your answer]
You are melting a chocolate and accidentally have the stove up to high. the chocolate starts to burn on the bottom of your pot. Physical or Chemical Change?
Answer:
it is a chemical change because it can't be change back to it normal position when it gets burnt