Answer:
2Na3PO4 + 3CaCl2 → 6NaCl + Ca3(PO4)2
HELP
What is the total pressure of a wet gas mixture at 60°C, containing water vapor, nitrogen, and helium. The partial pressures are
Pnitrogen - 53.0 kPa and Phelium = 25.5 kPa.
Answer:
98.4 kPa
Explanation:
Step 1: Given and required data
Partial pressure of water vapor at 60°C (pH₂O): 19.9 kPa (this info is tabulated)Partial pressure of nitrogen (pN₂): 53.0 kPaPartial pressure of helium (pHe): 25.5 kPaStep 2: Calculate the total pressure of the gaseous mixture
The total pressure of the gaseous mixture (P) os equal to the sum of the partial pressures of the gases that form it.
P = pH₂O + pN₂ + pHe
P = 19.9 kPa + 53.0 kPa + 25.5 kPa = 98.4 kPa
The total pressure of the wet gas mixture is 98.4 KPa
Dalton's law of partial pressureThis law states that at constant temperature, the total pressure of a mixture of gases is equal to the sum of the partial pressure exerted by each gas. Mathematically, it is expressed as
Total pressure = partial pressure of A + partial pressure of B
How to determine the total pressure Partial pressure of water vapor at 60°C (pH₂O) = 19.9 KPa Partial pressure of nitrogen (pN₂) = 53.0 KPa Partial pressure of helium (pHe) = 25.5 KPa Total pressure (P) =?P = pH₂O + pN₂ + pHe
P = 19.9 + 53 + 25.5
P = 98.4 KPa
Learn more about partial pressure:
https://brainly.com/question/15577259
4. How many liters of solution would be needed in a 4.5M solution that contains
101.1g of KNO3?
Plz helpppp^^^^^^^^^^
why is the term "ionic" used when describing compounds formed from a metal element and a nonmetal element?
The term ionic is used when compounds are formed from a metal element and non metal element because of the transfer of electrons from the metallic to the non metallic elements to become ions
Ionic combination is the process of chemical combination that mostly happens between metals and nonmetals in which metals lose electrons and non metals gain electrons.
Metals are reducing agents because they are highly electropositive. Hence they become ionized by losing electrons to electronegative elements like the non metals
Non metals are oxidizing agents because they become ionized by gaining electrons from electropositive elements, mostly metals.
Therefore, the term ionic is used when compounds are formed from a metal element and non metal element because of the transfer of electrons from the metallic to the non metallic elements to become ions
Learn more here: https://brainly.com/question/19467019
A solution is found to have a pH of 8.3. What is the hydroxide ion, [OH-]
concentration?
Answer:
[OH-] = 2 x 10^-6 M
Explanation:
Calculate pOH first: 14 - pH = pOH --> pH = 14 - 8.3 = 5.7
[OH-] = 10^-pOH = 10^-5.7 = 2 x 10^-6 M
Only one sig fig in the concentration, because the pH only had one decimal place.
Can you quess my Hogwarts house? Please explain why you think that and I will give brainliest
Answer:
I prob can bc I'm a bad b*tch
lol
Answer:
Slytherine
Explanation:
I hope you have a wonderful rest of your day!!!! :)
In each of the following sets of elements, which element would be expected to have the smallest atomic size?
a) Na, K, Rb
b) Mg, P, S
c) N, P, Sb
d) C, O, F
Answer:
d) C,O,F
Explanation:
because if you add up the atomic no.s (which is directly the size of the element)of each set d) is smallest.
Gas in a balloon occupies 3.3 liters. What volume will it occupy if the pressure is changed from 100 kPa to 90.0 kPa, if the temperature is held constant?
Answer:
3.7 L
Explanation:
Initial volume (V₁) = 3.3 L
Initial pressure (P₁) = 100 KPa
Final pressure (P₂) = 90 KPa
Final volume (V₂) =?
The final volume of the gas can be obtained by using the Boyle's law equation as follow:
P₁V₁ = P₂V₂
100 × 3.3 = 90 × V₂
330 = 90 × V₂
Divide both side by 90
V₂ = 330 / 90
V₂ = 3.7 L
Thus, the final volume of the gas is 3.7 L
Calculate the volume of 12.0 g of helium at 100° C and 1.2 atm.
Answer:
the answer I think is 76.5L
how many moles of silver nitrate are needed to produce 6.75 moles of copper (II) nitrate upon reacting with excess copper?
Answer:
13.50 moles of AgNO₃ are needed to produce 6.75 moles of Cu(NO₃)₂
Explanation:
We state the reactants:
AgNO₃
Cu
Then, the products are:
Cu(NO₃)₂
Ag
The reaction is: 2AgNO₃ + Cu → 2Ag + Cu(NO₃)₂
Ratio is 1:2.
The copper is in excess, so the limiting reactant is the silver nitrate:
1 mol of Cu(NO₃)₂ is produced by 2 moles of AgNO₃
Then, 6.75 moles of copper (II) nitrate would be produced by, the double of moles
(6 75 . 2) /1 = 13.50 moles
extremely hot.When a student went to open the car doo , he burned his finger. What two forms of energy were responsible for the student burning his fingers
Answer:
radiation and conduction
Explanation:
During a warm summer day, a car became extremely hot. When a student went to open the car door, he burned his fingers. What two forms of energy were responsible for the student burning his fingers?
Solution:
Heat is the transfer of energy from a warmer object to a cooler object. For heat transfer to occur, there have to be a difference in temperature between two objects.
Heat can be transferred in three ways: by conduction, by convection, and by radiation.
Conduction is the transfer of thermal energy between bodies through direct contact. Convection is the transfer of thermal energy through the movement of heat in a liquid or gas. Radiation is the transfer of thermal energy through thermal emission by electromagnetic waves.
During a warm summer day, The sun makes the car to become hot through energy transfer from the sun to the car. When the student touch the car, there is heat transfer as a result of conduction.
1. Which one does not belong the the group?" helium iodine radon or krypton
Answer:
Iodine
Explanation:
Helium, Radon, and Krypton are all in group 18 but Iodine is not
(it's in group 17)
:)
How many significant figures are in this number? : 2.7 x 10^-3
Answer:
2 significant figures i.e. 2 and 7.
Explanation:
We need to find the number of significant figures in the given number i.e. [tex]2.7\cdot10^{-3}[/tex].
It has 2 significant figures i.e. 2 and 7.
It means the power of 10 doesn't count in the significant figures.
Hence, there are 2 significant figures.
Explain why you can't just make gold out of a random yellow substance like straw or urine.
Answer:
because you cant
Explanation:
How does knowing about the structure and function of chromosomes help to explain variation in sexually reproducing organisms?
Answer:
here u go
Explanation:
Sexual reproduction results from the fusion of gametes produced by male and female. Sexual reproduction causes more viable variations because:
→ There might be an error in the copying of DNA, though the event is rare.
→ Segregation of chromosome of maternal and paternal origin at the time of gamete formation is random.
→ There is an exchange of genetic material between homologous chromosomes during formation of gametes.
In case of asexual reproduction, variation is significantly less since only a single parent is involved. Very small changes occur due to inaccuracies during DNA copying that pass on to the progeny. Thus, offsprings of asexual reproduction are more or less genetically similar to their parents. So, it can be concluded that evolution in sexually reproducing organisms proceeds at a faster pace than in asexually reproducing organisms.
The structure and function of chromosomes convey a particular sequence, so any variation in biological reproducing organisms produce a different sequence from chromosomes.
What are chromosomes?In our body 23 pairs of chromosomes are present and 23rd pair is known as the biological chromosome as it is responsible for the gender of new offspring.
Chromosomes are present in the DNA structure and helps in the transfer of genetic material. As we know that in biological reproduction, male and female both are involved and minor change in the sequence of process creates variation in biological reproducing organisms. Like during the meiosis some changes in the cross over process, dynamic union of gametes from male organism, independent assortment during fertilization and many more explains the variation in biological reproducing organisms.
Hence, as chromosomes carry particular sequence so any variation is determined by its structure.
To know more about chromosomes, visit the below link:
https://brainly.com/question/269366
1. Which layers from North America are the same age as layers from Europe? Use the number or letter of the layer to identify it?
Answer:
layer 1 is the same age as layer C
layer 3 is the same age as layer D
Please help!!! Will give brainlist
What happens when a chemical reaction reaches equilibrium
What is watershed management?
You have 54.32 grams of PbCl4. How many moles of PbCl4 do you have?
If you show the work that would be great!
A researcher notices that atoms of an element x are releasing energy. Why does this happen?
Answer:
The atoms are affected by light.Please give me Brainliest it would mean a lot
Why are fossils not found in igneous or metamorphic rocks?
Answer:
Because the rock underwent lava and heat/pressure transformation. They are cooled and heated by magma, and then under go pressure. No fossils would be found in those.
Explanation:
Hope this helps! :)
Answer:
Because...
Explanation:
Igneous rock is cooked in extreme hot temperatures.
Metamorphoc is lava cooled downed.
Select odd one out.
I) O
II) Na
III) Cu
IV) Ag
Explanation:
0 is the odd one...............
and rest are metals and they lose electron and 0 gain electron and is non metal
write down the formula for B
example:
Hydrogen + Fluorine = Hydrogen Fluorine
help
Answer:
P³⁻ + Cl⁻ --> PCl₃
Explanation:
PCl₃: phosphorus trichloride. prefix in front of chloride is "tri"–meaning three.
Answer:
phosphorus + chlorine = phosphorus trichloride
(He asked for word equation)
Which element in group 2 (Alkaline Earth Metals) is the most reactive?
Be
Mg
Ca
sr
Ba
Ra
Answer:
the reactivity of alkaline earth metals increases from top to the bottom of the group, that's because the atoms get bigger from the top to the bottom so the valence electrons are farther from the nucleus.
Suppose a fox population exists in an ecosystem. Some of the foxes maintain a heavy coat year-round, while others shed their heavy coat in the summer. Summers in this ecosystem
are becoming steadily hotter because of global warming. Which members of the species will most likely be able to adapt to the changing temperatures?
subject science
Answer:
The fox who shed their heavy coat in the summer.
Explanation:
If a fox has the ability to shed its coat in the summer, it will have no difficulties adapting to new temperatures even during winter. However, the heavy-coated one will.
How many hours are in 188 years
Answer: about 1,705,536 hrs
24 hrs = 1 day
189 hrs = 1 week
756 = 1 month
9072 = 1 yr
1,705,536 = 188 yrs
Explanation:
Trust Milky. Milky smart
What atoms in water are attracted to Chlorine?
Answer: hydrogen and oxygen
Explanation:
Black hair (B) is dominant to brown hair (b). Cross a black rabbit and a brown hair. The black rabbit had a brown haired mother.
What is the punnet square for this and the genotype and phenotype for this.
Answer:
Genotypic ratio = 1 Bb: 1 bb
Phenotypic ratio = 1 black rabbit : 1 brown rabbit
Explanation:
This question involves a gene coding for hair color in rabbits. The allele for Black hair (B) is dominant to the allele for brown hair (b).
According to this question, a black rabbit whose mother is brown haired (bb) is crossed with a brown hair rabbit. This means that the black rabbit will have a genotype 'Bb' while the brown rabbit will have a genotype 'bb'. Each parent will produce the following gametes:
Bb - B and b
bb - b and b
Using these gametes in a punnet square (see attached image), the following proportion of offsprings will be produced:
Bb, Bb, bb and bb
This means that the;
Genotypic ratio = 1 Bb: 1 bb
Phenotypic ratio = 1 black rabbit : 1 brown rabbit
1. When water is evaporated from a copper sulfate solution, copper sulfate remain.