Answer:
na+then mg2+ then al3+
Explanation:
this is due to the distance between their nucleus and valence electron
If a sample of gas has a volume of 200 ml at a pressure of 700 mm Hg. What will be its pressure if its volume is reduced to 100 ml?
State the numbers of protons, neutrons & electrons in an atom of Carbon-14
Answer:
Neutral carbon-14 contains six protons, eight neutrons, and six electrons; its mass number is 14 (six protons plus eight neutrons). These two alternate forms of carbon are isotopes.
I hope it's helpful!
What is matter?
12 points..
Explanation:
matter is a substance that has mass and it takes up space.
hope this helps!!
given the symbol below, how many protons are in the nucleus?
Based on the equation below, how many moles of aluminum sulfate (Al2(SO4)3) will be produced from the reaction of 5.8 moles of aluminum hydroxide (Al(OH)3) and excess sulfuric acid (H2SO4)? 2Al(OH)3 + 3H2SO4 → Al2(SO4)3 + 6H2O
Answer:
2.9 moles of aluminum sulfate will be produced from the reaction of 5.8 moles of aluminum hydroxide and excess sulfuric acid.
Explanation:
The balanced reaction is:
2 Al(OH)₃ + 3 H₂SO₄ → Al₂(SO₄)₃ + 6 H₂O
By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of each compound participate in the reaction:
Al(OH)₃: 2 moles H₂SO₄: 3 moles Al₂(SO₄)₃: 1 mole H₂O: 6 molesThen you can apply the following rule of three: if by reaction stoichiometry 2 moles of Al(OH)₃ produce 1 mole of Al₂(SO₄)₃, then 5.8 moles of Al(OH)₃ how many moles of Al₂(SO₄)₃ will they produce?
[tex]moles of Al_{2} (SO_{4} )_{3} =\frac{5.8moles of Al(OH)_{3} *1 mole of Al_{2} (SO_{4} )_{3}}{2moles of Al(OH)_{3}}[/tex]
moles of Al₂(SO₄)₃= 2.9
2.9 moles of aluminum sulfate will be produced from the reaction of 5.8 moles of aluminum hydroxide and excess sulfuric acid.
Answer:
67
Explanation:
because that right
How many liters of solution would it take to make a 0.250 M solution when you have 3.52 moles of solute?
Answer:
The volume of solution in liters required to make a 0.250 M solution from 3.52 moles of solute is 14.08 liters of solution
Explanation:
The question relates to the definition of the concentration of a solution which is the number of moles per liter (1 liter = 1 dm³) of solution
Therefore we have;
The concentration of the intended solution = 0.250 M
Therefore, the number of moles per liter of the required resolution = 0.250 moles
Therefore, the concentration of the required solution = 0.250 moles/liter
The volume in liters of the required solution that will have 3.52 moles of the solute is given as follows;
The required volume of solution = The number of moles of the solute/(The concentration of the solution)
∴ The required volume of solution = 3.52 moles/(0.250 moles/liter) = 14.08 liters
The required volume of solution to make a 0.250 M solution from 3.52 moles of solute = 14.08 liters.
Therefore the number of liters required to make a 0.250 M solution from 3.52 moles of solute = 14.08 liters.
How many atoms of nitrogen appear to be on the reactant side?
37.9 grams of an unknown substance undergoes a temperature increase of
25.0*C after absorbing 969 J. What is the specific heat of the substance?
Answer:
1.023 J / g °C
Explanation:
m = 37.9 grams
ΔT = 25.0*C
H = 969 J
c = ?
The equation relating these equation is;
H = mcΔT
making c subject of formulae;
c = H / mΔT
c = 969 J / (37.9 g * 25.0*C)
Upon solving;
c = 1.023 J / g °C
why do the properties of a material determine the use of the material?
Answer:
Matter is made up of particles whose properties determine the observable characteristics of matter and its reactivity.
Explanation:
CAN SOMEONE PLEASE CHECK MY ANSWER!!!
If it’s wrong please correct me!!!
*will mark brainliest*
yes the answer is right bro
How many grams are in 4.3 x 10 -4 moles of calcium phosphate?
Explanation:
Ca3(PO4)2 1 mole has 310.2 g
Ca3(PO4)2 4.3 × 10^-4 moles has 4.3 × 10^-4 × 310.2
= 1,333.86 × 10^-4
= 1.334 × 10^-1
OR 0.1334 g
State, in terms of the strength of intermolecular forces, why 12 has a higher boiling point than F2
Answer:
See explanation
Explanation:
The greater the relative atomic mass of an atom the more polarizable the atom is.
Also, the magnitude of dispersion forces depends on the molecular mass of the compound.
We must remember that both I2 and F2 are nonpolar molecules that are purely held together by dispersion forces.
Hence, I2, having the greater molecular mass and surface area experiences a greater magnitude of dispersion forces and consequently has a higher boiling point than F2.
How does the angle of the incoming light affect the intensity of the light that is refracted?
Answer:
A reflected ray always comes off the surface of a material at an angle equal to the angle at which the incoming ray hit the surface. In physics, you'll hear this called the law of reflection. You've probably heard this law stated as "the angle of incidence equals the angle of reflection
Explanation:
How many atoms are there in 48 grams of carbon?
Answer:
20
Explanation:
In which way are plant and animals cells similar
Answer:
Both animal and plant cells are eukaryotic cells and have several similarities. The similarities include common organelles like cell membrane, cell nucleus, mitochondria, endoplasmic reticulum, ribosomes and golgi apparatus
Explanation:
hey both contain membrane-bound organelles such as the nucleus, mitochondria, endoplasmic reticulum, golgi apparatus, lysosomes, and peroxisomes.
Answer:
Plant and animal cells are very similar, because they are both, Eukaryotic Cells. They both contain membrane-bound organelles such as the: Nucleus, Mitochondria, Endoplasmic Reticulum, Golgi Apparatus, Lysosomes, and Peroxisomes.
Hope this helps.
x
Please help me I need this done for today, please show your work on paper as well the answers for me to understand and copy.
Small pools of water with ocean life.
One day, while walking along the coast, you encounter the area pictured here. You notice that most of the water is gone at low tide and that an abundance of life lives in this area.
To which ocean zone does this area belong?
Answer:
Intertidal zone (i think)
Explanation:
Answer:
A
Explanation:
Which is the balanced chemical equation showing hydrogen peroxide (H2O2) decomposing into hydrogen (H2) and oxygen (O2)? Multiple Choice H2O2 → H2 + O2 H2 + O2 → H2O2 2 H2 + O2 → 2 H2O2 2 H2O2 → 2 H2 + O2 PrevQuestion 13 of 14 Total13 of 14Visit question mapNext
Answer: [tex]H_2O_2\rightarrow H_2+O_2[/tex]
Explanation:
According to the law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of products has to be equal to the mass of reactants. The number of atoms of each element has to be same on reactant and product side. Thus chemical equations are balanced.
The balanced chemical equation for showing hydrogen peroxide decomposing into hydrogen and oxygen is:
[tex]H_2O_2\rightarrow H_2+O_2[/tex]
What is involved in creating genetically modified bacteria?
A. allowing them to reproduce freely
B. changing their food source
c. using biotechnology techniques
D. growing them on selected plants
Look at the diagram below.
+
Will this atom gain or lose electrons to achieve a stable configuration?
It will gain electrons to fill its outer shell.
It will lose electrons to be left with a full outer shell.
It depends on the situation.
It will neither lose nor gain electrons.
ASAP
Answer:
it will gain electrons to fill its outer shell
Explanation:
This element is boron which has 5 electrons.
Which amendment protects an accused person's right to remain silent?
O Second
O Eight
O Tenth
O Fifth
?
Answer:
Fifth trust me
Explanation:
what does kyle learn at the end
Answer:
Umm who's Kyle?
Explanation:
Answer:
his skills aren’t as valuable to the team as he thought
Explanation:
Mg4O2 is an example of what type of bond?
Dissociation and THEN hydration afterwards is the process of: * 1 point water pulling a compound apart and then surrounding the broken pieces/ions (this is what dissolving is) breaking down the food into simpler nutrients that can be used by the cells a mental process where a person disconnects from their thoughts, feelings, memories or sense of identity
Answer:
water pulling a compound apart and then surrounding the broken pieces/ions (this is what dissolving is)
Explanation:
As we know, water is a polar solvent. What this means is that water can effectively interact with ions in an ionic substance owing to its large dipole moment.
Now, when an ionic substance is dissolved in water, the positive end in water pulls hard on the negative ion of the ionic substance while the negative end in water pulls hard on the positive ion of the ionic substance.
The ionic substance is eventually pulled apart and surrounded by water molecules. This is how an ionic substance is dissolved in water.
What is the mass in grams of a 10.2cm3 block of copper
Answer:
91.4
Explanation:
Givens
d = 8.96
v = 10.2 cm^3
m =?
Formula
d = m / V
Solution
8.96 = m / 10.2 Multiply both sides by 10.2
8.96 * 10.2 = m
m = 91.392 grams
m = 91.4 grams rounded.
This element, in the nitrogen family, has more protons than silver, but less than xenon
Answer:
antimony
Explanation:
it has 51 protons, 4 more than silver and two less than xenon
The manufacturer of an aerosol deodorant packaged in a 300 mL container plans to produce a container of the same size that will hold twice as much gas. How will the pressure of the gas in the new product compare with that of the gas in the original container?
Answer: It will get higher
Explanation: it’ll get higher because the pressure will increase
Use the half-reaction method to balance the following equations :
MnO4- + Br- = MnO2 + BrO3- (Acidic Solution )
Br- + 2MnO4- + 2H+ → BrO3- + 2MnO2 + H2O
Further explanationGiven
MnO4- + Br- = MnO2 + BrO3-
Required
The half-reaction
Solution
In acidic conditions :
1. Add the coefficient
2. Equalization O atoms (add H₂O) on the O-deficient side.
3. Equalization H atoms (add H⁺ ) on the H -deficient side. .
4. Equalization of charge (add electrons (e) )
5. Equalizing the number of electrons and then adding the two half -reactions together
Oxidation : Br- → BrO3-
Reduction : MnO4- → MnO2
Equalization O atomsBr- + 3H2O → BrO3-
MnO4- → MnO2 + 2H2O
Equalization H atomsBr- + 3H2O → BrO3- + 6H+
MnO4- + 4H+ → MnO2 + 2H2O
Equalization of chargeBr- + 3H2O → BrO3- + 6H+ + 6e- x1
MnO4- + 4H+ + 3e- → MnO2 + 2H2O x2
Equalizing the number of electrons and then adding the two half -reactions togetherBr- + 3H2O → BrO3- + 6H+ + 6e-
2MnO4- + 8H+ + 6e- → 2MnO2 + 4H2O
Br- + 2MnO4- + 3H2O + 8H+ + 6e- → BrO3- + 2MnO2 + 6H+ + 4H2O + 6e-
Br- + 2MnO4- + 2H+ → BrO3- + 2MnO2 + H2O
Hey guys. Sorry for all the questions. But I’m checking my answers for a Science test. Here are my questions.
1. Which type of energy does moving water have?
A. Electrical
B. Wind
C. Kinetic
D. Potential
2. A teacher walks quickly by a student sitting at her desk. Which term describes what the student observed?
A. Speed
B. Motion
C. Position
D. Force
Thank you!!
Answer:
1. c 2. b that's what i think i learned this in middle school i dont completely remember
Which of the following is a common cause of acid rain? *
1 point
oil spilled into tropical ocean waters
gases released when plants make food
emissions produced by burning fossil fuels
warm water released from nuclear power plants
Answer:
Emissions produced by burning fossil fuels
Explanation:
these gases decreases the ph level of rain water that makes water acidic