Answer:
copper sulphate reacts with sodium hrydroxide to form a blue preipitate of copper hrydroxide and soduim hrydroxide.
a cube is 5.00 cm on each side and has a mass of 600.0 g. what is its density?
Answer:
7,491 lb/cu ft.
Explanation:
What does a chemical equation have that a chemical formula does not have
Answer:
Chemical equations show the ending outcome, while Chemical formulas only show how you lead up to it.
Explanation:
1. List 3 things that make it difficult for Mark to survive on Mars
2. Why did Nasa not want the crew to know that Mark was still alive?
3. How do you think Marks sense of humor helped him survive? Use 2 example from the movie
4. Explain how Mark is rescued.
Answer;
need more info.........
Explanation:
energy _____ means reducing energy use
Answer:
Energy efficiency
Explanation:
Answer:
Efficiency
Explanation:
It's quiet easy if you ask me haha
Elements in the same period generally have:
A. Similar chemical groups.
B. The same number of electrons in the outer energy level.
C. Similar physical properties.
D. None of these.
Answer:
C
Explanation:
similar physical properties
How many moles of a gas sample are in a 5.0 L container at 205 K and 340 kPa?
(The gas constant is
L kPa
8.31
mol K
)
Round your answer to one decimal place and enter the number only with no units.
Your Answer:
Answer
Answer:
1.0 mole
Explanation:
From the question given above, the following data were obtained:
Volume (V) = 5 L
Temperature (T) = 205 K
Pressure (P) = 340 KPa
Gas constant (R) = 8.31 KPa.L/Kmol
Number of mole (n) =?
Using the ideal gas equation, the number of mole of the gas in the container can be obtained as follow:
PV = nRT
340 × 5 = n × 8.31 × 205
1700 = n × 1703.55
Divide both side by 1703.55
n = 1700 / 1703.55
n = 1.0 mole
Thus, the number of mole of the gas in the container is 1.0 mole
I’m confused and I don’t understand this can someone help?
Answer:
50%
Explanation:
This is a simple one trait Punnett square.
Because we know that the recessive trait is blue (yy) thanks to the text mentioning SpongeSusie being blue and recessive. Spongebob is yellow with a genotype of Yy or heterozygous. So we need two y to make a blue baby.
Yy X yy = 50% yellow Yy and 50% blue yy
What is the empirical formula of a compound containing 12 g of carbon, 2 g of hydrogen, and 16 g of oxygen only
Answer:
The empirical formula=CHO. To explain it is C1H1O1 but we don't put the one that's why it is CHO
Explanation:
a gas occupies 1.85 L at 819 torr and 15*C What volume will it fill if the pressure is changed to 712 torr and the temperature is raised to 46*C (in L)
Explanation:
P1V1/T1=P2V2/T2(general gas equation)
(829×1.85)/(273+15)=712×V2/(273+46)
V2=2.386L
How many grams would be in 4.45 x 10^23 molecules of N203
Answer:
56.24g
Explanation:
To find the mass of N2O3 in 4.45 x 10^23 molecules, it must first be converted to moles by dividing the number of molecules in N2O3 by Avagadro's number (6.02 × 10^23).
number of moles in N2O3 = 4.45 x 10^23 ÷ 6.02 × 10^23
n = 4.45/6.02 × 10^(23 - 23)
n = 0.74 × 10^0
n = 0.74moles.
Using the formula below to find the mass of N2O3;
mole = mass ÷ molar mass
Molar mass of N2O3 = 14(2) + 16(3)
= 28 + 48
= 76g/mol
mass = mole × molar mass
Mass = 0.74 × 76
Mass = 56.24g
Which structure is the naturally occurring form of glucose?
six-sided ring
multiple ring
five-sided ring
linear chain
Answer: A. Six-Sided Ring
James measured the humidity of the air on his backyard each morning for four days His data is recorded below On which day did it most likely rain
Answer:
hdbdjsjsj
Explanation:
hdhshshe
Balanced equation: K2S(aq) + BaCl2(aq) =
Answer:
K2S(aq) + BaCl2(aq) = 2KCl(aq) + BaS(s)
In the image attached, it is explained how the solution is balanced.
The number of atoms of any element in the given chemical formula is the number that is written on the foot of the symbol of that element. The balanced equation is
K[tex]_2[/tex]S(aq) + BaCl[tex]_2[/tex](aq)[tex]\rightarrow[/tex]2KCl(aq) + BaS(s)
What is Balanced equation?Balanced equation is the one in which the total number of atoms of a species on reactant side is equal to the total number of atoms on product side.
The unbalanced equation is
K[tex]_2[/tex]S(aq) + BaCl[tex]_2[/tex](aq) [tex]\rightarrow[/tex]KCl(aq) + BaS(s)
The number of atoms of K on reactant side is 2 while on product side it is 1, so to balance K we need to multiply KCl by 2
K[tex]_2[/tex]S(aq) + BaCl[tex]_2[/tex](aq) [tex]\rightarrow[/tex]2KCl(aq) + BaS(s)
The atoms of sulfur on reactant and product side is 1, so it is balanced.
The atoms of Ba on reactant and product side is 1, so it is balanced.
The atoms of Cl on reactant and product side is 2, so it is balanced.
Therefore the balanced equation is
K[tex]_2[/tex]S(aq) + BaCl[tex]_2[/tex](aq)[tex]\rightarrow[/tex]2KCl(aq) + BaS(s)
Learn more about the balanced equation, here:
https://brainly.com/question/7181548
#SPJ2
Consider two bonds, A and B. Both bonds presently are selling at their par value of $1,000. Each pays interest of $120 annually. Bond A will mature in five years, while bond B will mature in eight years. If the yields to maturity on the two bonds change from 12% to 10%
a. Both bonds will decrease in value but bond B will decrease more than bond A
b. Both bonds will increase in value but bond B will increase more than bond A
c. Bond A will increase in value, but Bond B will decrease in value.
d. Both bonds will increase in value but bond B will increase more than bond A
e. Both bonds will increase in value but bond A will increase more than bond B
Answer:
The answer is "Option b"
Explanation:
The longer its maturity, therefore higher the rise in prices as the interest rate changes, therefore higher the value from both bonds, but bond B is greater than bond A.
Automobile air bags inflate following a serious
impact. The impact triggers the following chemical
reaction:
2NaN3(s) + 2Na(s) + 3N2(g)
If an automobile airbag has a volume of 11.6 L, what mass of NaN3 (in g) is required to fully inflate the airbag upon impact? Assume STP conditions.
Express your answer in grams to three significant figures.
Answer:
b
Explanation:
Sample A: 300 mL of 1M sodium chloride
Sample B: 145 mL of 1.5 M sodium chloride
Which sample contains the larger density?
Answer:
sample B contains the larger density
Explanation:
Given;
volume of sample A, V = 300 mL = 0.3 L
Molarity of sample A, C = 1 M
volume of sample B, V = 145 mL = 0.145 L
Molarity of sample B, C = 1.5 M
molecular mass of sodium chloride, Nacl = 23 + 35.5 = 58.5 g/mol
Molarity is given as;
[tex]C = \frac{moles \ of \ solute, \ mol}{liters \ of \ solvent} \\\\Moles \ of \ solute \ for \ sample \ A = 1 \times 0.3 = 0.3 \ mol\\\\Moles \ of \ solute \ for \ sample \ B = 1.5 \times 0.145 = 0.2175 \ mol[/tex]
The reacting mass for sample A = 0.3mol x 58.5 g/mol = 17.55 g
The reacting mass for sample B = 0.2175 mol x 58.5 g/mol = 12.72 g
The density of sample A [tex]= \frac{mass}{volume} = \frac{17.55}{0.3} = 58.5 \ g/L[/tex]
The density of sample B [tex]= \frac{mass}{volume} = \frac{12.72}{0.145} = 87.72 \ g/L[/tex]
Therefore, sample B contains the larger density
The smallest unit which contains all the chemical properties of the substance containing two or more atoms is ? .
Answer:
element has this explanation and is actually the smallest unit with chemical properties
several/two grologic processes change the surface of earth quickly/gradually/over various time pirods
Answer:
sever and over
There are 16 ounces in a pound. How many pounds are in 52 ounces?
A compound has the empirical formula CH. A sample of this
compound containing 0.387 moles has a mass of 30.19 g. What is the
molecular formula?
Select one:
O
a. C6H6
b. C2H2
0
c. C3H3
O
d. C4H4
What are the concentrations of hydroxide and hydronium ions in a solution with a pH of 8.3?
2.9 × 10–5 M H3O+ and 3.4 × 10–10 M OH–
3.1 × 10–6 M H3O+ and 3.2 × 10–9 M OH–
5.0 × 10–9 M H3O+ and 2.0 × 10–6 M OH–
6.3 × 10–11 M H3O+ and 1.6 × 10–4 M OH–
In terms of electrons, What do the arrows mean?
What is true of a solution of 1.0 M HCl(aq)?
It contains 1.0 gram of HCl per 100 grams of water.
It contains 1.0 gram of HCl per 1 liter of solution.
It contains 1.0 mole of HCl per 100 milliliters of water.
It contains 1.0 mole of HCl per 1 liter of solution.
It is true that a solution of 1.0 M HCl contains 1.0 mole of HCl per 1 liter of solution.
What is molarity?Molarity refers to the measure of the concentration of a chemical species.
It is measured in particular of a solute in a solution i.e. in terms of amount of substance per unit volume of solution.
If a solution is 1.0M HCl, this means that there are 1.0 mole of HCl per 1 liter of solution.
Learn more about molarity at: https://brainly.com/question/17578846
Show all organic compounds
I hope you understand and thank you for your questions
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100 POINTS! Need help ASAP!
How much NaOH was needed to neutralize the acid in the beaker? How could you tell that the acid was neutralized?
Answer:
5ML
Explanation:
Neutral litmus paper is usually purple. however in this case the neutral color seems to be yellow. Litmus can also be prepared as an aqueous solution that functions similarly. Under acidic conditions, the solution is red, and under alkaline conditions, the solution is blue.
1. element with three occupied energy levels and
one valence electron
Answer:
Potassium (K) = (2,8,8,1)
This is the element that has three(3) filled energy level and one valence electron
A sample of helium gas at 72.0 degrees C and 1.18 atm has a volume of 1.893 L. Calculate the pressure of the helium when the volume of the sample is 1.234 L at standard temperature?
Answer:
.....
Explanation:
D0wnload Phot0Math......................
A mixture contains 21.7 g NaCl,
3.74 g KCI, and 9.76 g Lici.
How many total moles are in this
mixture?
Molar Mass
NaCl: 58.44 g/mol
KCI: 74.55 g/mol
LiCl: 42.39 g/mol
Answer:
[tex]n_{tot}=0.652mol[/tex]
Explanation:
Hello there!
In this case, according to the given problem, it is possible to use the given molar masses of NaCl, KCl and LiCl in order to calculate the total moles, yet we calculate the moles of each salt first as shown below:
[tex]n_{NaCl}=21.7gNaCl*\frac{1molNaCl}{58.44gNaCl}=0.371molNaCl\\\\ n_{KCl}=3.74gKCl*\frac{1molKCl}{74.55KCl}=0.0502molNaCl\\\\ n_{LiCl}=9.76gLiCl*\frac{1molLiCl}{42.39gLiCl}=0.230molLiCl[/tex]
Then, we add them all together to obtain:
[tex]n_{tot}=0.371mol+0.0502mol+0.230mol\\\\n_{tot}=0.652mol[/tex]
Regards!
URGENT PLZ HELP
According to AUFBAU, which of the following sublevels is of highest energy?
a) 2p
b) 3d
c) 3s
d) 4s