Answer:
D.
Explanation:
Meets the qualifications!
Which is the correct chemical formula for Pentacarbon Tetraphosphide
Answer:
C5P4
Explanation:
the answer is C5P4 because penta is 5 and tetra is 4
How many degrees would the temperature of a 45.0 g piece of iron increase if 7,680 J of energy are applied to it? (The specific heat of iron is 0.449 J/g°C)
Question 10 options:
76.6°C
155,000°C
380°C
0.0130°C
Answer:
380
Explanation:
Q=mco
Q is the energy
M is mass
C is specific heat
O is increased in temperature
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 student is given 25.2 mol of CuSO4 and it is dissolved into 3 L of water.
What is the molarity?
If 10ml of 1.00M HCI(aq) neutralized 30 ml of an NaOH solution. What was the molarity of the Na OH solution?
Explanation:
plz mark as brainlist///////
What does a strong nuclear force do in an atom?
It repels electrons from other electrons.
It repels protons from other protons.
It attracts protons and neutrons.
It attracts protons and electrons.
Answer:
It Attracts Protons And Neutrons
Explanation:
The strong nuclear force can be regarded as strong interaction. It is force which is strong enough to overcomes repulsive force that exist between two positively charged protons, and this give room for protons and neutrons to stick together in small space.This strong interaction can as well be regarded as attractive force and it binds elementary particles known as quarks together and it forms the "nucleons " which is (protons and neutrons) . It should be noted that strong nuclear force Attracts Protons And Neutrons in an atom
Answer:
c
Explanation:
edge
Structures and Forces - What is force and external forces.
Question 1) Jacob and Ravleen are moving furniture. They need to move the filing cabinet over 6 feet and it is very heavy. Jacob wants to apply force and push it by putting his hands on point A because he thinks it would be easier to move it from the top as there is less weight on the top. Ravleen says it's better to push at point B because the center of gravity is lower. Which person is correct and EXPLAIN why and what may happen if it is pushed in the wrong spot.
Answer:
The restoring force that prevents the furniture from tipping over when pushing the furniture towards the right, F= W × D
Where;
W = The weight of the furniture
D = The horizontal distance from the center of gravity of the furniture, CG and the to the lower right corner of the furniture
Given that A > D, for the furniture to tip over when pushing above the CG, we have;
F1 × A ≤ W × D
∴ F1 << W or for a force much smaller than W, the weight of the furniture applied above the center of gravity, the furniture will tip over
However when the force F2 is applied, where C < D, we have for no tipping over;
F2 × C ≤ W × D, therefore, given that C < D, when a force much higher than the weight, W, is applied at F2, the furniture will remain upright
Therefore, it is better push at a point lower than or equal to the center of gravity, whereby the point B is lower than the center of gravity, it is better to push at point B, Ravleen is correct and it is better to push at point B because the center of gravity is lower
If the furniture is pushed at the wrong spot it may tip over
Please see attached drawing
Explanation:
Agustina was standing on the edge of a cliff of unknown height holding a bowling ball. She wanted to find the height of the cliff. She worked with Maite to time the how long the bowling took to fall to the bottom of the cliff. Maite timed the drop at 9.4 seconds on each of their 10 trials. The bowling ball started at rest on each of the trials. What distance did the bowling ball fall in each trial?
Answer:
433 m
Explanation:
Since the fall represents motion under gravity, we use the equation
s = ut - 1/2gt² where s = height of cliff or distance bowling ball falls through, u = initial velocity of bowling ball = 0 m/s(since it starts from rest), t = time = 9.4 s and g = acceleration due to gravity = -9.8 m/s².
So, substituting the values of the variables into the equation, we have
s = 0 m/s × 9.4 s - 1/2 × 9.8 m/s² × (9.4 s)²
s = 0 m - 1/2 × -9.8 m/s² × 88.36 s²
s = 1/2(865.928 m)
s = 432.964
s ≅ 433 m
The pressure of 25.0 L is increased from 11.0 kPa to 16.0 kPa. What is the new pressure
Answer:
Explanation:
Anyone know this question
Answer:
12
my advice is split the equation into 2 and write on each side how many atoms of each element are there and it will be easier to balance.
JURCES OF
ATION from our class! Make sure to give
definition & explain your answer for each question part. Today's CRQ
Look at the diagram below. What type of bonding (ionic or covalent) does it
represent? Explain your choice by giving the definition of that type of bond. Give
description of that type of bonding by explaining how & why Hydrogen & Chlorine
bond.
H+CI:-HCI :
-
H:CI:
(For Bonus points-if this was Carbon & Fluorine what would be newly formed Compound's
correct name or Chemical Formula)
Answer:
Covalent bond
Explanation:
A covalent bond is formed when two atoms share electrons. The shared electrons are positioned between the nuclei of the bonding atoms.
In the bonding between chlorine and hydrogen, chlorine has seven valence electrons. Hence, it needs one more electron in order for the atom to attain an octet structure. Hydrogen has one valence electron and needs one more electron in order to attain a duplet structure.
The two bonding atoms now share two electrons(provided by each of the bonding atoms) in a covalent bond such that chlorine has a complete octet and hydrogen has a complete duplet.
How many molecules are in 450.0 grams of aluminum fluoride (AIF3)?
Answer:
5.3586262014272155
Explanation:
You have to go from grams --> moles --> molecules. You can find the equation online.
First you have to find the molar mass of AlF3 which is 83.98 g/mol.
To convert it to moles you simply
450.0 grams × [tex]\frac{1 mol}{83.98 grams}[/tex] = 5.358 mol
To convert mol to molecules: (multiply by Avogadros # = 6.022*10^23)
5.358 mol × [tex]\frac{6.022*10^2^3}{1mol}[/tex] = [tex]3.23 *10^{24}[/tex]
WILL GIVE BRAINLIEST!!
Ammonium sulphate, (NH4)2SO4, is a fertilizer used to supply both nitrogen and sulfur. How many grams of ammonium sulphate are in 35.8 moles of (NH4)2SO4.
= _ g (NH4)2SO4
Answer:
4725.6 g of (NH4)2SO4
Explanation:
Molar mass of a substance is the number of mass of the substance contained in one mole of the substance. It is also called the formula weight of the compound. The formula mass of (NH4)2SO4 is 132 g/mol Hence;
Now we know that;
1 mole of (NH4)2SO4 contains 132 g of (NH4)2SO4
35.8 moles of (NH4)2SO4 contains 35.8 * 132/1
= 4725.6 g of (NH4)2SO4
What is the difference in a transverse and a longitudinal wave?
Group of answer choices
Transverse waves are bigger than longitudinal waves
A transverse wave has crests and troughs and a longitudinal has compressions and rarefactions.
Transverse waves are sound waves and longitudinal waves are light waves.
Answer:
A transverse wave has crests and troughs and a longitudinal has compressions and rarefactions.
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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A 187.4g sample of C3H5(NO3)3 decomposes to produce carbon dioxide, water, diatomic oxygen and diatomic nitrogen.
Write the balanced chemical equation for the decomposition reaction.
How many grams of carbon dioxide are produced?
How many grams of water are produced?
How many grams of diatomic oxygen are produced?
How many grams of diatomic nitrogen are produced?
The law of conservation of mass states that mass is neither created nor destroyed in a chemical reaction. Verify the law of conservation of mass for the decomposition of the 187.4 g of C3H5(NO3)3 .
Figured out the answer, thank you!!
I've attached a second photo with the answers :)
Answer:
See Explanation
Explanation:
The equation of the reaction is as follws;
4 C3H5(NO3)3 (l) → 12 CO2 (g) + 10 H2O (l) + 6 N2 (g) + O2 (g)
Number of moles of C3H5(NO3)3 = 187.4g /227 g/mol = 0.82555 moles
If 4 moles of C3H5(NO3)3 yields 12 moles of CO2
0.83 moles of C3H5(NO3)3 yields 0.82555 * 12/4 = 2.47665 moles of CO2
mass of CO2 produced = 2.47665 moles * 44 g/mol = 108.95 g of CO2
4 moles of C3H5(NO3)3 yields 10 moles of water
0.83 moles of C3H5(NO3)3 yields 0.82555 * 10/4 = 2.063875 moles of water
Mass of water = 2.063875 moles of water * 18 g/mol = 37.16 g
4 moles of C3H5(NO3)3 yields 1 mole of O2
0.83 moles of C3H5(NO3)3 yields 0.82555 * 1/4 = 0.2063875 moles of O2
Mass of O2 = 0.2063875 moles of O2 * 32 g/mol = 6.6 g
4 moles of C3H5(NO3)3 yields 6 moles of N2
0.83 moles of C3H5(NO3)3 yields 0.82555 * 6/4 = 1.238325 moles of N2
Mass of N2= 1.238325 moles of N2 * 28 g/mol = 34.67 g
To verify the law of conservation of mass, the total sum of mass of products must equal the sum of the mass of reactants. Thus;
108.95 g + 37.16 g + 6.6 g + 34.67 g = 187.4 g
The law of conservation of mass has been proven!
What is the pOH value when the solutions hydroxide concentration is 1.0 x 10−6 M?
Question 9 options:
a)
8
b)
-8
c)
-6
d)
6
Answer:
c
Explanation:
Why do you think the Sun is not at the center of Mercury’s orbit?
Answer:
Like Venus, Mercury orbits the Sun within Earth's orbit as an inferior planet, and its apparent distance from the Sun as viewed from Earth never exceeds 28°. This proximity to the Sun means the planet can only be seen near the western horizon after sunset or the eastern horizon before sunrise, usually in twilight.
Explanation:
Cuál es la Masa en Gramos de 3,5 moles de H2O?
Which statements describe how traits are inherited? Check all that apply.
A. An offspring always
receives different alleles
from each parent.
B. An offspring always
receives the same alleles
from each parent.
C. An offspring can receive
different alleles or the
same
alleles from each parent.
D. Traits are inherited when
proteins are passed from
parents to offspring.
E. Traits are inherited when
genes are passed from
parents to offspring.
please hurry
1. Write the balanced reaction of Al with CuCl2.
2. What is the limiting reagent if 0.5 g Al is reacted with 3.5 g CuCl2? (Reminder: CuCl2 is a dihydrate)
3. What is the theoretical yield of copper produced by the reaction above?
help plsss
1. [tex]\sf \: Al + CuCl_2 = AlCl_3 + Cu[/tex]
[tex]\\[/tex]
2. CuCl₂·2H₂O is limiting reactant.
Chemical reaction: 3CuCl₂·2H₂O + 2Al → 3Cu + 2AlCl₃ + 6H₂O. m(Al) = 0,5 g.
[tex]\\[/tex]
3. The molar mass of copper is 63.546 grams per mole.
If we multiply everything out, we'll get 0.50722 grams of copper, which is our theoretical yield.
[tex]\\[/tex]
[tex]\rule{300px}{.7ex}[/tex]
Hope it helps uh :)♡~
above answer is right :)
Which characteristic cannot be inherited?
A. color of an animal's fur
B. height of a plant
C. knowledge of facts
D. shape of a face
please hurry
Answer:
the answer is c
What is the radius of this circle if the circumference is 18 pi cm?
Answer: 2.86 inches
Explanation: To find the radius, then, we insert 18 in for the circumference. So 18=2∏r. Solving for r gives 9/∏, or approximately 2.86 inches.
Answer:
2.86 inches
Explanation:
Select the correct answer from each drop-down menu. A student labels two 250 milliliter beakers with the letters A and B. She puts 100 milliliters of water in each of them. She adds some salt to beaker A and stirs until the salt dissolves completely. Then she adds another 50 milliliters of water to beaker A. She adds more salt to beaker B, and the salt in beaker B doesn't completely dissolve in the water even after much stirring. The solution in beaker A is . The solution in beaker B is .
Answer:
The solution in beaker A is unsaturated
The solution in beaker B is saturated
Explanation:
A saturated solution is a solution that contains just as much solute as it can normally hold at a particular temperature. An unsaturated solution is a solution that contains less solute than it can normally hold at a particular temperature.
If more solute is added to a saturated solution, the added solute does not dissolve completely. However, if more solute is added to an unsaturated solution, the added solute dissolves.
Which of the following is a property of water? (5 points)
Question 13 options:
1)
It can freeze very fast.
2)
It has low heat capacity.
3)
It exists in all three states on Earth.
4)
It repels other water molecules.
I believe the answer is number 1 but I could be wrong ><
Water is a substance composed of hydrogen and oxygen and exists in solid, liquid and gaseous state in nature.
What is hydrogen?Hydrogen is "a colourless, odourless, tasteless, flammable gaseous substance that is the simplest member of the family of chemical elements".
What is oxygen?Oxygen is "a non-metallic chemical element of Group 16 (VIa) of the periodic table".
What is solid?Solid is a state of matter in which atoms or molecules are tightly packed.
What is liquid?Liquid is a state of matter in which atoms are held loosely and are free to flow.
What is gas?Gas is a state of matter which has no fixed shape and volume.
Hence, water exists in three states of matter.
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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
What is the difference between Mitosis and Meiosis?
URGENT!!!
Which statement explains why an increase in molality increases the boiling point of a solution? The addition of solute decreases the solvent’s vapor pressure. A higher temperature must then be applied to overcome the change. The addition of solute increases the solvent’s vapor pressure. A higher temperature must then be applied to overcome the change. The addition of solute increases the solvent’s ability to boil. The solute’s molecules repel the solvent’s molecules, giving them higher binding energy and hence the need for higher temperature.
Answer:
the addition to solute decreases the solvent's vapor pressure. a temperature must then be applied to overcome the change
Explanation:
Answer:
long story short: A
Explanation:
Somebody please help this is due in 30 minutes! (picture is attached)
44.5 g Al2(SO4)3
Explanation:
# moles Ba(NO3)2 = (0.543M)(0.717 L)
= 0.389 mol Ba(NO3)2
Now we use the molar ratios,
0.389 mol Ba(NO3)2 ×(1 mol Al2(SO4)3/3 mol Ba(NO3)2)
= 0.130 mol Al2(SO4)3
0.130 mol Al2(SO4)3 × (342.15 g Al2(SO4)3/(1 mol Al2(SO4)3)
= 44.5 g Al2(SO4)3
Calculate the molarity of a solution that contains 0.75 moles of lithium fluoride, LiF, in a 65 mL solution.
The molarity (M) of a solution is 11.5 M that contains 0.75 moles of lithium fluoride, LiF in a 65 ml of solution.
What is Molarity ?Molarity (M) is defined as the number of moles of solute dissolved in 1L of solution. Molarity is also known as Molar concentration. The S.I Unit of Molarity is molar (M) or mol/L.
How to find molarity of a solution ?Molarity (M) = [tex]\frac{\text{Number of moles of solute}}{\text{Volume of solution (in liters)}}[/tex]
From the above definition it is clear that the volume of solution is in liter. In question the volume of solution is given in ml.
So, convert 65 ml into l.
65 ml = [tex]\frac{65}{1000}[/tex] = 0.065 l
Now, put the values in above formula, we get that
(M) = [tex]\frac{0.75}{0.065}[/tex] = 11.5 M
Thus, the molarity of a solution is 11.5 M that contains 0.75 moles of lithium fluoride, LiF in a 65 ml of solution.
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