Answer:
2Al + 3Cu(ClO3)2 → 2Al(ClO3)3 + 3Cu and
3Ag + Li3PO4 → Ag3PO4 + 3Li
Explanation:
In single repacement reactions, one element is substituted for another to produce a different compound. In the problem, the cation is exchange and the elements produced are:
Al(ClO3)3 and Ag3PO4.
The reactions are:
2Al + 3Cu(ClO3)2 → 2Al(ClO3)3 + 3CuAnd:
3Ag + Li3PO4 → Ag3PO4 + 3LiHow far above earth is the international space station
Answer:
248 miles
Explanation:
At an average altitude of 248 miles (400 kilometers) above Earth, the space station is the third brightest object in the sky.
A container of a mixture of 4 gases has a total pressure of 35.7 kPa. Gas A has a partial pressure of 7.8kPa. Gas B has a partial pressure of 3.7 kPa, and Gas C has a pressure of 8.7kPa. What is the partial pressure of Gas D in kPa?
Answer:
partial pressure of gas D Pd = 15.5 kPa
Explanation:
As per the Dalton's law of partial pressure, in a mixture, pressure exerted by each gas when summed gives the total partial pressure exerted by mixture.
P(Total) = P1+P2+P3.....
Given P(Total) = 35.7 kPa
Partial pressure of gas A Pa = 7.8 kPa
Partial pressure of gas B Pb = 3.7 kPa
Partial pressure of gas C Pc = 8.7 kPa
There, Partial pressure of gas D Pd = P(Total) -(Pa+Pb+Pc)
Pd = 35.7-(7.8+3.7+8.7) = 35.7-20.2 kPa = 15.5 kPa
Therefore, partial pressure of gas D Pd = 15.5 kPa
Write a balanced equation out of these chemicals
Answer:
2Na + 2H20--> 2NaOH+H2
............. this is the ans
At 289 K, a sample of gas has a volume of 42.0 cm3. What volume does the gas occupy at 342 K? (12.5 Points)
Answer: [tex]49.7\ cm^3[/tex]
Explanation:
Given
At temperature [tex]T_1=289\ K[/tex]
Volume is [tex]V_1=42\ cm^3[/tex]
and the temperature changes to [tex]T_2=342\ K[/tex]
At this temperature volume is [tex]V_2[/tex]
Consider Pressure remains the constant
[tex]\therefore \dfrac{V_1}{T_1}=\dfrac{V_2}{T_2}\\\\\Rightarrow V_2=V_1\times \dfrac{T_2}{T_1}\\\\\text{Insert values}\\\\\Rightarrow V_2=42\times \dfrac{342}{289}\\\\\Rightarrow V_2=49.7\ cm^3[/tex]
The volume at this temperature is [tex]49.7\ cm^3[/tex]
what are the key components of nitrogen cycle
Answer:
Important processes in the nitrogen cycle include fixation, ammonification, nitrification, and denitrification.
Explanation:
The key components of nitrogen cycle are :nitrogen fixation, nitrification, assimilation, ammonification and denitrification.
What is nitrogen cycle?It is a bio-geochemical cycle through which nitrogen is converted into multiple chemical forms when it circulates among atmospheric, terrestrial and marine ecosystems .
Conversion of nitrogen is carried out through physical and biological processes.Nitrogen cycle is important as it affects of ecosystem processes like primary production and decomposition.
Conversion of nitrogen gas to nitrates and nitrites through atmospheric , industrial and biological processes is called nitrogen fixation. Nitrogen is assimilated in plants in form of nitrates or ammonium forms.When an animal or plant dies the nitrogen in organic form is converted to ammonium which is mineralization.
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A fertilized egg, or a
, is formed from the fusion of egg and sperm.
How many grams of HCl(aq) are required to react completely with 1.25g of Zn(s) to form ZnCl2(aq) and H2
1.39 g HCl
Explanation:
The balanced chemical equation for this reaction is given by
Zn(s) + 2HCl(aq) ---> ZnCl2(aq) + H2(g)
Convert the # of grams of Zn to moles:
1.25 g Zn × (1 mol Zn/65.38 g Zn) = 0.0191 mol Zn
Use the molar ratio to find the # of moles of HCl needed to react completely with the given amount of Zn:
0.0191 mol Zn × (2 mol HCl/1 mol Zn) = 0.0382 mol HCl
Convert this amount to grams:
0.0382 mol HCl × (36.458 g HCl/1 mol HCl) = 1.39 g HCl
If you want to eat foods that contain less additives, what could you do?
A.
Stay away from packaged foods.
B.
Stay away from fresh fruits and vegetables.
Answer: the answer is a
Explanation:
always eat fresh fruits and veggiies.
An 8.0 L sample of neon gas at 300. K exerts a pressure of 900. kPa. If the gas is compressed to 2.0 L and the temperature is raised to 600. K, what will be the new pressure?
Answer:
7200 kPa
Explanation:
Applying,
PV/T = P'V'/T'................ Equation 1
Where P = Initial pressure of neon gas, V = Initial volume of neon gas, T = Initial temperature of neon gas, P' = Final pressure of neon gas, V' = Final volume of neon gas, T' = Final Temperature of neon gas
Make P' the subject of the equation
P' = PVT'/V'T.............. Equation 2
Given: P = 900 kPa, V = 8.0 L, T = 300 K, V' = 2.0 L, T' = 600 K
Substitute these values into equation 2
P' = (900×8×600)/(2×300)
P' = 7200 kPa
10. Given the reaction:
Be + H → He + x
Which species is represented by X?
(1) Li
(3) B
(2) Li
(4) B
Answer:
B hope help you stay happy
HELP !!! WITH CHEMISTRY QUESTION
React with metal : property of acidic solutions.
PH > 7 : property of basic solutions.
Feels slippery: property of basic solutions
PH = 7: property of neutral solutions.
Tastes sour : property of acidic solutions.
more H+ ions than : property of acidic
OH- ions solutions.
OH- ions & H+ ions : property of neutral
present in equal solutions
amount
PH< 7 : property of acidic solutions.
conducts : property of acid solutions,
electricity property of basic solutions,
in Water property of acid & base
solutions
Tastes bitter : property of basic
solutions.
what types of charge does a proton have ?
Answer:
positive charge
Explanation:
protons are the positive chargers of any chemical reaction unlike neutron which are just the neutral part
Answer:
Positive charge
Explanation:
Electrons are Negative charge
Determine the pressure inside a television picture tube with a volume of 3.50 L that contains
2.00 X 10^-5 g of nitrogen gas at 22°C.
The pressure inside the television tube containing 2×10¯⁵ g of N₂ at 22 °C is 4.94×10¯⁶ atm
How to determine the mole of fluorine gasMass of N₂ = 2×10¯⁵ gMolar mass of N₂ = 2 × 14 = 28 g/mol Mole of N₂ =?Mole = mass / molar mass
Mole of N₂ = 2×10¯⁵ / 28
Mole of N₂ = 7.14×10¯⁷ mole
How to determine the pressure Volume (V) = 3.5 LTemperature (T) = 22 °C = 22 + 273 = 295 KGas constant (R) = 0.0821 atm.L/Kmol Number of mole (n) = 7.14×10¯⁷ molePressure (P) = ?The pressure inside the television tube can be obtained by using the ideal gas equation as follow:
PV = nRT
Divide both side by V
P = nRT / V
P = (7.14×10¯⁷ × 0.0821 × 295) / 3.5
P = 4.94×10¯⁶ atm
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Mendel crossed tall pea plants with short pea plants. the offspring were all tall plants.
1. Which allele is recessive?
2. Which allele is dominant?

please hurry

Answer:
1. Allele for shortness (t)
2. Allele for tallness (T)
Explanation:
Gregor Mendel performed numerous experiments using pea plants (Pisium sativum). He tested the height traits of pea plants by crossing tall pea plants (TT) and short pea plants (tt) to obtain offsprings that were all tall (Tt) in the first filial generation (F1).
This is possible because the allele for tallness is DOMINANT while the allele for shortness is RECESSIVE. This means that tallness allele (T) will mask the phenotypic expression of shortness allele (t) when in an heterozygous state (Tt) as in the F1 generation.
I WILL MARK BRAINLY WHOLE SLIDE
How speak fluent English.
Answer:
practise, because it helps you get comfortable in speaking english
and there is also a quote that says "practise makes perfect"
Explanation:
HOPE IT HELPS
What set of coefficients will balance the chemical equation: _NaBr (aq) + _H3PO4 (aq) → _Na3PO4(aq) + _HBr (aq)
A. 3,1,1,3
B. 1,2,3,1
C. 3,1,3,1
D. 1,1,3,3
The Balanced chemical equation for above reaction will be :
[tex] \small{ \mathrm{3NaBr + H_3PO_4 \rightarrow Na_3PO_4 + 3HBr}}[/tex]
The Coefficients will be :
[tex]NaBr - 3[/tex][tex]H_3PO_4 - 1[/tex][tex]Na_3PO_4 - 1[/tex][tex]HBr - 3 [/tex]So, Correct option is :
A. 3, 1, 1, 3
_____________________________
[tex]\mathrm{ \#TeeNForeveR}[/tex]
What happens when two plates move alongside each other?
Answer:When two plates travel in the same direction, they intersect or collide. A convergent boundary is a collision between two plates that are traveling in the same direction. Large damaging earthquakes occur from the collision. The forming of massive folded mountains occurs as two continental plates collide.
Explanation:
Equal volumes of solutions with pH = 2 and pH=12 is mixed. Calculate the pH of the resulting solution?
Answer: The pH of resulting solution is 14.
Explanation:
pH of a solution is the negative logarithm of concentration of hydrogen ions.
If two or more solutions are mixed together then pH of the resulting solution is calculated as the sum of pH of all the solutions.
As pH of a given solution is 2 and pH of another solution is 12. Therefore, pH of the resulting solution is calculated as follows.
[tex]pH = pH_{1} + pH_{2}[/tex]
where,
[tex]pH_{1}[/tex] = pH of solution 1
[tex]pH_{2}[/tex] = pH of solution 2
Substitute the values into above formula as follows.
[tex]pH = pH_{1} + pH_{2}\\= 2 + 12\\= 14[/tex]
Thus, we can conclude that the pH of resulting solution is 14.
To calculate the percentage of people who have a particular allele population studies are conducted to collect data.true or false
Thermal energy is the energy associated with
a. electric fields
b. being stored in chemical bonds
c. the pull of gravity
d. temperature
Answer:
D is the answer
Explanation:
Because thermal is Heat Energy
I hope it's right
Thermal energy is the energy associated with temperature. The correct option is d.
Thermal energy is the energy associated with a substance's or system's temperature. It is a type of kinetic energy that results from the random motion of tiny particles.
The higher the temperature, the larger the average kinetic energy of the particles and the bigger the amount of thermal energy present.
Heat transmission, phase shifts (such as melting or boiling), and the general thermal behaviour of materials all require thermal energy.
It differs from other types of energy including electrical energy (option a), chemical potential energy (option b), and gravitational potential energy (option c).
Thus, the correct option is d.
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What is the difference between Mitosis and Meiosis?
Need help on this question asap please please I’m going to really appreciate it
Answer:
0.11 moles
Explanation:
The equation of the reaction is;
2SO2 + O2 ------>2SO3
Number of moles of O2 in 3.42 g = 3.42g/32 g/mol = 0.11 moles
Hence, 0.11 moles of O2 is consumed when 3.42 g of O2 reacts with SO2 to form SO3.
Na+ and P-3 whats the formula and whats the name of it
Answer:
sodium phosphide!!!!!!!!!!!!!!!
I can't seem to figure out how to set up charts so there's just a screenshot of the question in the file attached :) Thank's for any help!!
Answer:
See Explanation
Explanation:
Volume of base used = (31.79 - 1.6) + (32.12 - 0.98) + (42.87 -13.21)/3 = 30.34 cm3
Volume of acid used = (24.86 - 0.42) + (24.11 - 0.11) + (27.67 -3.42)/3 = 24.23 cm3
For trial 1= number of moles of HBr = 24.44/1000 * 0.3 = 0.0073 moles
For trial 2= number of moles of HBr = 24/1000 * 0.3 = 0.0072 moles
For trial 3= number of moles of HBr = 0.0089 moles
HBr(aq) + KOH(aq) -----> KBr(aq) + H2O(l)
One mole of base is required to neutralize one mole of acid.
From CAVA/CBVB =nA/nB
CAVAnB = CBVBnA
CB = CAVAnB/VBnA
CB = 0.3 * 24.23 * 1/30.34 * 1
CB = 0.24 moldm-3
number of moles of KOH = concentration * volume
number of moles = mass/molar mass
molar mass of KOH = 56 g/mol
mass/56 = 0.24 * 30.34/1000
mass = 0.24 * 30.34/1000 * 56
mass =0.408 g of KOH
How does natural selection contribute to total biodiversity?
Answer:
Natural selection says that either they evolve differently and increase their biodiversity or they die. Both wouldn't have enough food to survive so animals with those traits would become less and less common. ... Natural Selection can also decrease the biodiversity.
Answer: Increase their biodiversity or they die
Explanation:
Both wouldn't have enough food to survive so animals with those traits would become less and less common. ... Natural Selection can also decrease the biodiversity.
Which element is more reactive, Almuminum (Al) or Chlorine (Cl)?
Answer question in picture
(D)
Explanation:
On the left side two molecules, each made of 2 grays and 3 blues, which suggests that only (D) offers the right combination: 2 Al atoms and 3 O atoms that make up Al2O3.
How many formula units are in 25.4 g of MgCl2?
Answer: 1.58 x [tex]10^{23}[/tex]
Explanation:
1 mole of magnesium chloride has a mass of 95.211 g and contains 6.022⋅[tex]10^{23}[/tex]formula units of magnesium chloride, you can say that,
25.0 g x (6.022 x [tex]10^{23}[/tex] form units MgCl2) /95.211 = 1.58 x [tex]10^{23}[/tex]
Which reaction represents natural nuclear
decay?
A) 4N+ He → 30 H
B) KC1O3 + K+ + C103
C) 335 U → He + 331 Th
D) H+ + OH- + H2O
Answer:
answer is d
i hope this helps you
The reaction that represents natural nuclear decay is 335 U → He + 331 Th, i.e., option C.
What is a nuclear decay reaction?Nuclear reactors continue to operate by enclosing the nuclear fission process.
Even after fission has stopped, radioactive decay of fission products and transuranic elements formed in a reactor produces heat.
Fission reactions can be moderated in order to increase fission or unmoderated in order to breed more fuel.
The reaction that represents natural nuclear decay is
335 U → He + 331 Th.Thus, the correct option is C.
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