Answer:
0.0457M is molarity of nitrate anion in the solution.
Explanation:
Molarity is defined as the ratio between moles of solute (In this case, nitrate ion) and liters of solution (The total volume of the solution is 300.0mL = 0.300L).
Thus, we need to convert mass of Lead(II) nitrate to moles using its molar mass (Molar mass Pb(NO₃)₂: 331.2 g/mol). Moles of Pb(NO₃)₂ = 1/2 Moles of NO₃⁻:
Moles Pb(NO₃)₂ and moles of NO₃⁻:
2.27g * (1mol / 331.2g) = 0.006854 moles Pb(NO₃)₂ * (2moles NO₃⁻ / 1mol Pb(NO₃)₂) = 0.0137moles NO₃⁻
Molarity is:
0.0137 moles NO₃⁻ / 0.300L =
0.0457M is molarity of nitrate anion in the solutionWhich of these is a harmful interaction
Answer:The five major types of species interactions, summarized in Figure 10, are competition, predation, parasitism, mutualism, and commensalism.
Explanation:
If a dog has a mass of 16.1 kg, what is its mass in the following units? Use scientific notation in all of your answers.
g
mg
ug
Answer:
[tex]16.1\times 10^3\ \text{g}[/tex]
[tex]16.1\times 10^{6}\ \text{mg}[/tex]
[tex]16.1\times 10^{9}\ \mu\text{g}[/tex]
Explanation:
Mass of dog = [tex]16.1\ \text{kg}[/tex]
[tex]1\ \text{kg}=10^{3}\ \text{g}[/tex]
[tex]1\ \text{kg}=10^{6}\ \text{mg}[/tex]
[tex]1\ \text{kg}=10^{9}\ \mu\text{g}[/tex]
So,
[tex]16.1\ \text{kg}=16.1\times 10^3\ \text{g}[/tex]
[tex]16.1\ \text{kg}=16.1\times 10^{6}\ \text{mg}[/tex]
[tex]16.1\ \text{kg}=16.1\times 10^{9}\ \mu\text{g}[/tex]
Mass of the dog in the other units is [tex]16.1\times 10^3\ \text{g}[/tex], [tex]16.1\times 10^{6}\ \text{mg}[/tex] and [tex]16.1\times 10^{9}\ \mu\text{g}[/tex].
Breathing air that contains 4.0% by volume CO2 over time causes rapid breathing, throbbing headache, and nausea, among other symptoms. what is the concentration of co2 in such air in terms of mol percentage
Answer:
1 mole of any ideal gas occupies the same volume as one mole of any other ideal gas under the same conditions of temperature and pressure.So 1 L CO2 has same number of moles as 1 L O2 and 1 L N2 etc.This means that, assuming all the gases in air are ideal gases, if CO2 is 4.0 % by volume then it is also 4.0 % by moles, because a volume of each gas has the same number of moles.
Explanation:
The moons of Jupiter
orbit Jupiter because
they are pulled toward
Jupiter. The moons of
Jupiter are too far to
be pulled into Earth's
orbit.
Yes or No
Answer:
Yes
Explanation:
Jupiter is a very large planet. Larger planets usually have stronger gravity, which pulls planets toward each other.
The moons of Jupiter are by Jupiter. (I know, that wasn't a smart thing to say because you know that, but, hey, I had to.) With this being the case, Jupiter is also an inside planet.
- Inside Planets
Planets that are closest to the sun and orbits the sun
There are 2 things that are the cause of the moons of Jupiter not being pulled by earth.
1. Jupiter has strong gravity which pulls the moons, and Jupiter is being pulled by the sun's INCREDIBLE gravity.
2. Earth is an outside planet. It is too far away from Jupiter to attract Jupiter's moons.
- Outside Planet
A planet that is away from the sun, but still orbits the sun
Hope this helps! :D
If you want to know more about the sun, just call on me!!!!
Yes, The moons of Jupiter orbit Jupiter because they are pulled toward Jupiter. The moons of Jupiter are too far to be pulled into Earth'orbit.
What is orbit ?A planet's orbit around a star, a natural satellite's orbit around a planet, or an artificial satellite's orbit around a space object or location like a planet, moon, asteroid, or Lagrange point are all examples of curved objects that follow this path.
A planet's orbit around a star, a natural satellite's orbit around a planet, or an artificial satellite's orbit around a space object or location like a planet, moon, asteroid, or Lagrange point are all examples of curved trajectories in celestial mechanics known as orbits.
Around a star, a natural satellite's orbit around a planet, or an artificial satellite's orbit around a space object or location like a planet, moon, asteroid, or Lagrange point are all examples of curved objects that follow this path.
Yes, The moons of Jupiter orbit Jupiter because they are pulled toward Jupiter. The moons of Jupiter are too far to be pulled into Earth'orbit.
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The reason for an opals characteristic flash is because the sphere of silica are mixed with a small amount of what ? A.) Magma B.) Hydrogen C.) Methane D.) Water
Answer:Silica content influences magma behavior-____magmas have high silica content, are viscous (thick), and erupt at a lower temperature-____magmas have much lower silica content, more fluidlike behavior, and erupt at a higher temperature
Explanation:
PLZ HURRY GIVING 35 POINTS
how many grams from a 100 grams sample of fe2o3 is iron
Answer:
40 Grams
Explanation:
Fe2O3 is 2 parts Iron 3 parts Oxygen.
Assuming the molecular weights of both are equivalent (ideal elemental law), it is a 2:3 ratio, or 2/5 of the total.
2/5 of 100 is 40, so the answer is
40 grams
If we place 15 moles of NaN3, how many
grams of NaN3 do you have before the
reaction?
Answer:
25.8 g C6H12O6
Explanation:
1. What 3 types of bonds are typically found in biological organisms?
Answer:
Chemical bonds. Chemical bonds are the connections between atoms in a molecule. ...
Covalent Bonds. Chemical bonds are the forces of attraction that tie atoms together. ...
Ionic Bonds. ...
Bonds, Stability, and Compounds.
Answer:
Ionic bonding.
Covalent bonding.
Metallic bonding.
How have government and businesses impacted energy efficiency?
Answer:
Government programs aim to increase incentives for consumers and producers to move toward energy efficiency.
Explanation:
Government programs aim to increase incentives for consumers and producers to move toward energy efficiency.
please help fast :/
how many moles are present in 60 grams of hydrochloric acid , HCI ?
a : 1.40 moles
b : 36.45 moles
c : 1.65 moles
d : 60 moles
Answer: C- 1.65 moles
Explanation:
HCl = 1 + 35.45 = 36.45 g/mol
Questions
What is the main point of the passage?
Ultraviolet rays can cause chemical reactions.
Van Gogh was the most famous painter of the Impressionist era.
Art conservationists can always restore art.
Artists' paints can eventually damage the canvasses.
201A
Based on the complete text, it is clear to see that the main point of the passage is A. Ultraviolet rays can cause chemical reactions.
What is a Central Idea?This refers to the theme of a text that is used in order to show the message that an author wants to convey in a given text that he wants his readers to understand and grasp.
Hence, we can see that from the complete text which can be found on the official website of BBC news site, the story is told about the ultraviolet rays that were found to cause chemical reactions and discolored some parts of the paintings by Vincent Van Gogh,
This is further explained as the bright yellows in the paintings chemically reacted and thus turned into brown color and this shows that option A is the correct answer that shows the central idea or main point of the text.
Read more about central ideas here:
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15. In the chemical equation H2O2(aq) → H2O(0) + O2(g), the O2 is a
Answer:
oxygen
if it's helpful ❤❤
3) An object accelerates 7.2 m/s2 when a
force of 4.0 Newtons is applied to it.
What is the mass of the object?
Answer:
0.56 kgExplanation:
The mass of the object can be found by using the formula
[tex]m = \frac{f}{a} \\ [/tex]
f is the force
a is the acceleration
From the question we have
[tex]m = \frac{4}{7.2} \\ = 0.5555555...[/tex]
We have the final answer as
0.56 kgHope this helps you
Which of these has the most potential electrical energy?
Answer:
d beacuse it uses lots of electricity
Which food does an animal with wide, flat teeth most likely eat?
O A fish
O B. meat
O c. plants
OD. Insects
Answer:
plants
Explanation:
What is the percent composition of oxygen in
beryllium nitrate, Be(NO3)2?
The percent composition of oxygen in beryllium nitrate, Be(NO3)2 is 72.166%.
What is percent composition ?
Percent composition is very straightforward. Percent composition indicates the percentage of each element in a compound by mass. A chemical compound is made up of two or more elements.
Percent composition is important because it allows us to calculate the percentage of each element in a compound. Here, the quantity is measured in terms of grams of the elements present.
For example, if we know the mass and chemical composition of a substance, we can find out the number of moles and calculate the number of atoms or molecules in the sample.
In Be(NO3)2 the percent composition of Beryllium (Be) is 6.775%, Nitrogenium (N) is 21.060% and Oxygenium (O) is72.166%.
Thus, The percent composition of oxygen in beryllium nitrate, Be(NO3)2 is 72.166%.
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Define international system of units , where does the system originate
Answer: See explanation
Explanation:
The International System of Units (SI), is also referred to as the metric system, and it is the standard for measurement internationally.
It should be noted that the The International System of Units (SI), originated from France. It is the system of measurement that is accepted officially worldwide. e.g. S.I unit for time is seconds.
The atomic number of sodium (Na) is 11. The element phosphorus (P) is the fourth element to the right of sodium in the periodic table.
The atomic number of phosphorus is ____. It has zero charge because it had ____ electrons.
Answer:
atomic number of phosphorous is 15. It has zero charges because it has equal number of protons and electrons
Explanation:
PLZZZZZZZZZZZZZZZZ I N EEEEEEEEEEEEEED THIS ANSWERRRRRInterest and suspense are built during which part of the story?
A
introduction
B
rising action
C
climax
D
falling action
Answer:
the answer is B rising action! :)
3. How many atoms are in 2 moles of Carbon?
Answer:
Explanation:
In one mole of carbon, there are 6.02×10^23 atoms. So in two moles, there will be twice that: 1.204×10^24
N
0/2 points
Imagine: There are at least a few atoms that now make up you, that USED to make up one of the
dinosaurs that lived 65 million years ago! Explain how this could be using the idea that elements were
originally created in the heat and explosion of stars.
Answer:
These people painted mostly animals that they most likely hunted as a major source of food, and in doing so left behind evidence of their activities i think
Explanation:
True or False: Metals usually have stronger electron affinity than non-metals. True or False: Noble gas elements have a very large value for electron affinity. True or False: Negative anions have a larger ionic radius than the atomic radius of their neutral atom.
Explanation:
Metals usually have stronger electron affinity than non-metals:
In the periodic table, the trend of electron affinity is that it increases from left to right across the period and decrease down the group.
False
Noble gas elements have a very large value for electron affinity:
Electron affinity is the change in energy of an atom when an electron is added. Noble gases already have a complete octet configuration hence there is no reason to accept any electrons. This makes their electron affinity value less than or equal to zero.
False
Negative anions have a larger ionic radius than the atomic radius of their neutral atom:
Neutral atoms that gain electron are referred to as anions. The extra electron increases the electron-electron repulsion which pushes the electrons further apart and finally increased radius.
True
Work and energy unit test
Answer:
whats your question
Explanation:
Which compounds have the empirical formula CH20?
a. C2H402
b. C3H603
c. CH202
d. C5H1005
e C6H1206
Answer:
Answer is A.
Explanation:
I hope it's helpful!
11. What is the expression 1 in. = 2.54 cm properly called?
(a) equation
(b) conversion factor
(c) SI factor
(d) equivalence statement
A nonmetal in the third period that should have chemical properties similar to oxygen.
Answer:
Sulfur
Explanation:
A non-metal in the third period that should have chemical properties similar to oxygen is sulfur.
This is because elements in the same group/family have similar chemical properties.
Chemical properties is predicated on the number of valence electrons within an atom. The number of valence electrons is the number of outermost shell electrons within an atom. Elements combines with one another using these valence shell electrons. Since sulfur is in the third period and the same vertical group as oxygen, they have similar chemical properties.Which of these can be found in a plant cell but not in an animal cell?
A.) chromosome
B.)nucleus
C.)chloroplast
D.)cell membrane
i would really like it if u could help me out with this. please and thank u :)
Answer:
C.)chloroplastExplanation:
The plant cell has a cell wall, chloroplasts, plastids, and a central vacuole—structures not found in animal cells. Plant cells do not have lysosomes or centrosomes.
What do we call the energy that travels from the sun in the form of waves
Answer:
Solar energy is essentially the light and heat emitted from the sun
Which of the following represents a ternary ionic compound that is also multivalent?
A.Mn(CIO3)2
B. Mno
C. NH3
D. HCIO3