Answer:
Dividing the mass of the water lost by the original mass of hydrate used is equal to the fraction of water in the compound. Multiplying this fraction by 100 gives the percent water in the hydrate.
Explanation:
The amount of water throughout the compound has been determined by dividing the mass of water wasted mostly by original quantity of hydrate used. The above fraction can be multiplied by 100 to get the hydrate's water content in percentages.
What is mass ?The proportion of matter that makes up an object is quantified by its mass. The kilogram, or kg, would be the fundamental SI unit of mass.
What is hydrate?Any substance that contains water through the form of H2O molecules is referred to as a hydrate. This water content by weight can vary, but it is typically fixed. The most well-known hydrates seem to be crystalline solids which decompose once the attached water is removed.
Therefore , The amount of water throughout the compound has been determined by dividing the mass of water wasted mostly by original quantity of hydrate used. The above fraction can be multiplied by 100 to get the hydrate's water content in percentages.
To know more about mass and hydrate.
https://brainly.com/question/11202174
#SPJ3
1. Using the structural formulas for ammonia (NH3 on the left) and hexane (C6H14 on the right) below which statement explains what will happen when ammonia and hexane are mixed?
A. Hexane will dissolve with ammonia if you stir them together for 10 minutes
B. Ammonia and hexane will not dissolve because one molecule is polar and the other is non polar.
C. Ammonia and hexane will dissolve together
D. Ammonia and hexane will not dissolve because one molecule is ionic and the other is non polar
2. If you add water to 750.0 mL of a 2.800 M KCl solution, and its molarity changes to 1.500 M, what will the new volume be?
1200 mL
401.0 mL
1400 mL
800.0 mL
Answer:
1. B. Ammonia and hexane will not dissolve because one molecule is polar and the other is non polar.
2. 1400 mL
Explanation:
In chemistry, like dissolve like! Ammonia is a polar molecule having a significant dipole moment owing to its three N-H bonds. On the other hand, hexane is a purely non-polar hydrocarbon hence the two substances can never dissolve in each other.
From the dilution formula;
C1V1=C2V2
C1= Initial concentration of the solution
V1 = Initial volume of the solution
C2 = Final concentration of the solution
V2= Final volume of the solution
2.8 M * 750.0 mL = 1.5 M * V2
V2 = 2.8 M * 750.0 mL/1.5 M
V2 = 1400 mL
The different between molecules in a liquid and molecules in a gas
Answer:
Gases, liquids and solids are all made up of atoms, molecules, and/or ions, but the behaviors of these particles differ in the three phases. ... gas are well separated with no regular arrangement. liquid are close together with no regular arrangement. solid are tightly packed, usually in a regular pattern.
Alia needs to order the following isotopes by atomic number. Use what you know about atomic number and
isotopes to drag and drop the tiles in order of increasing atomic number from lowest to highest.
Silver-109
Cadmium-106
Rhodium-122
Indium-110
Palladium-109
Answer:
Rhodium-122 < Palladium-109 < Silver-109 < Cadmium-106 < Indium-110
Explanation:
Atomic number - Number of protons.
The number displayed at the end of the element in this question represents the mass number (Number of protons + Number of neutrons).
The atomic number of the isotopes are given below;
Silver-109 --> 47
Cadmium-106 --> 48
Rhodium-122 --> 45
Indium-110 --> 49
Palladium-109 --> 46
Arranging in order of increasing atomic number from lowest to highest;
Rhodium-122 < Palladium-109 < Silver-109 < Cadmium-106 < Indium-110
What is the molarity of a solution made from dissolving 3.0 moles of Saline (NaCl) in 0.25 L of solution?
Answer: the answer is 12M
Explanation: 3.0mol/ 0.25L =12M
12M is the molarity of a solution made from dissolving 3.0 moles of Saline (NaCl) in 0.25 L of solution.
What is molarity?The amount of molecules of molecules divided by the quantity of liters in solution is the definition of molarity, a concentration unit in chemistry. It is crucial to comprehend how it is calculated as well as when to employ it in comparison to other units because it is among the most widely used concentration units.
A chemical solution's concentration is measured in molarity (M). It refers to the solute's moles per liter of solution. To be clear, this is not the same as the liters of solvents (a common mistake).
molarity = number of moles of solute/ volume of solution in litre
molarity =3.0mol/ 0.25L
=12M
Therefore, 12M is the molarity of a solution made from dissolving 3.0 moles of Saline (NaCl) in 0.25 L of solution.
To know more about molarity, here:
https://brainly.com/question/29884686
#SPJ2
The diagram shows the molecular structure of butane. What is the chemical
formula for butane?
Butane
H
Н
Hн
н—с-с-с-с-Н
|| []
Н н н Н
А. 4C1ОН
В. С4Н10
С. 4CH10
D. HC4H
Answer: B
Explanation: sorry if I'm too late but i just did this question and that was the right answer
How are beef and gas productions related to methane levels?
Plzzz answer quick
Answer:
Cows and other ruminant animals (like goats and sheep) emit methane, a potent greenhouse gas, as they digest grasses and plants. This process is called “enteric fermentation,” and it's the origin of cows' burps.
Explanation:
Newtons law of motion
Select the most reactive metal from the options below
Iron
Copper
Zinc
Gold
Answer: Hello, This is my most favorite class so I know this is right.
The most Reactive metal source is Copper.
Explanation:
This is the most reactive because it contains Lithium supplement.
Your Welcome! Mark me as Brainliest! :)
Excessive use of chemical fertilizer cause chemical pollution.How?
Explanation:
Chemical fertilizers raise crop yields, but their heavy usage has hardened the soil, diminished fertility, reinforced pesticides, contaminated air and water, and emitted greenhouse gases, posing health and environmental risks.
Please help will mark Brainliest!!!
How many grams of HCL (hydrochloric acid) can you make with 50 grams of Cl.
H + Cl -> HCL is the balanced equation
Answer:
Explanation:
It's 21 /
How are cations formed? A. when one or more electrons of an atom disintegrate B. when an atom gains one or more electrons from other atoms C. when an atom shares one or more electrons with another atom D. when an atom loses one or more electrons
Answer:
D
Explanation:
When an atom loses an electron the number of electrons exceeds the number of protons. This means that the negative charge induced by the electrons exceeds the positive charge induced by the protons.
Help me please I’ll give brainliest answer
Answer:
the answer is c I believe
Dipole-dipole interactions are (weaker than, stronger than, equal to) hydrogen bonds.
Answer and Explanation:
Dipole-Dipole interactions are weaker than hydrogen bonds.
Hydrogen bonds are a form of dipole-dipole interactions, being the strongest form of dipole-dipole interactions.
#teamtrees #PAW (Plant And Water)
Which is which, acid or base?
Answer:
HCI - BASE
KOH - ACID
H2SO4 - ACID
H30 + :- BASE
NAOH - ACID
Stoichmetric calculations must not be based on the limiting reagent
true or false
Answer:
Ture
Explanation:
Ture
True
True
True
Where is each conversion factor found?
Answer:
Explanation: A conversion factor is a number used to change one set of units to another, by multiplying or dividing. When a conversion is necessary, the appropriate conversion factor to an equal value must be used. For example, to convert inches to feet, the appropriate conversion value is 12 inches equal 1 foot.
In a reaction 25.00mL of nitric acid required 51.4mL of 0.73M calcium hydroxide. Calculate the grams of nitric acid per liter of solution
Answer:
47.27 g HNO₃
Explanation:
The reaction between nitric acid (HNO₃) and calcium hydroxide (Ca(OH)₂) is the following:
2HNO₃(aq) + Ca(OH)₂(aq) → Ca(NO₃)₂ + 2H₂O(l)
According to the chemical equation, 2 moles of HNO₃ reacts with 1 mol of Ca(OH)₂. At the point of total neutralization, the total number of moles of HNO₃ reacts with the total number of moles of Ca(OH)₂:
2 x moles HNO₃ = moles Ca(OH)₂
The number of moles is equal to the product of molarity of the solution (M) and the volume in liters (V):
M(HNO₃) = ?
M(Ca(OH)₂) = 0.73 M
V(HNO₃) = 25.00 mL x 1 L/1000 mL = 0.025 L
V(Ca(OH)₂) = 51.4 mL x 1 L/1000 mL = 0.0514 L
So, we can write the equation at neutralization point as:
2 x (M(HNO₃) x V(HNO₃)) = M(Ca(OH)₂) x V(Ca(OH)₂)
From this, we can calculate the molarity of HNO₃:
M(HNO₃) = (M(Ca(OH)₂) x V(Ca(OH)₂))/2 x V(HNO₃)
= (0.73 M x 0.0514 L)/(2 x 0.025 L)
= 0.75 M HNO₃
We can convert the molarity from M (mol/L) to g/L by using the molecular weight of HNO₃:
Mw(HNO₃) = 1 g/mol H + 14 g/mol N + (3 x 16 g/mol O) = 63 g/mol
Finally, we multiply the molarity by the molecular weight to obtain the grams of nitric acid per liter of solution:
0.75 mol/L HNO₃ x 63 g/mol = 47.27 g HNO₃
1. Explain where they bury remains at the Forensic Osteological Research Center and why
Answer:
In the middle of the forest.
Explanation:
They have to bury the remains in the middle of the forest at the Forensic Osteological Research Center in order to study the decomposition of the dead person. By studying the decomposition of dead person we can get a lot of information which can be used in the study of criminal cases and solving of crimes. The middle place in the forest is a perfect place to bury the remains due to presence of huge amount of microbes as well as insect that helps in the decomposition.
4) What mass of hydrogen is formed when 2.00g of magnesium
Mg + H2SO4–>H2SO4
Answer: 0.16 g H2
Explanation:
Mg+ H2SO4= MgSO4 + H2
Atomic massof Mg is 24
Molecular mass of H2 is 2
So,
24g Mg produce 2 g H2
1g Mg produce (2÷24)= 0.083 g H2
2.00g Mg produce (0.083×2) g H2
= 0.16 g H2
0.16g of hydrogen is formed when 2.00g of magnesium.
The mass of hydrogen gas formed when 2.00g of magnesium is equal to 0.165 g.
What is the balanced chemical equation?The chemical equation of a reaction is said to be a balanced equation when the number of atoms of substances is equal on either side of the equation.
Evergy balanced chemical equation must follow the law of conservation of mass according to which the total mass of the substances present on the reactant side should be equal to the total mass of substances present on the product side.
Given, the balanced chemical equation of the reaction of Mg and sulfuric acid:
[tex]Mg + H_2SO_4 \longrightarrow MgSO_4 +H_2[/tex]
One mole of magnesium produces hydrogen gas = 1mol
Given the mass of magnesium = 2g
The number of moles of Mg = 2/24.3 = 0.082 mol
Then the number of moles of hydrogen gas formed = 0.082 mol
The mass of the hydrogen gas = 0.082 × 2 = 0.165 g
Learn more about the balanced chemical equation, here:
brainly.com/question/15052184
#SPJ2
HELP DUE IN 7 minutes TwT
Which product forms from the synthesis reaction between sodium (Na) and
sulfur (S)?
O A. Nasz
B. Nas
C. Na2S
O D. Na2S2
Answer:
Answer is C
Explanation:
the valency of sulphur is 2 ans sodium is 1
by crossing it forms NA2S
Question 25 points)
Obsidian is a glassy black igneous rock. A sample of obsidian is shown.
Which type of rock forms in a similar manner as obsidian but at a slower
rate?
Oa
Oь
Ос .
Od
schist, which forms under extreme heat and pressure
conglomerate, which forms when different-sized sediments cement together
gypsum, which forms when water evaporates and leaves behind minerals
granite, which forms as magma cools deep underground
Answer:
Granite
Explanation:
Answer:
Granite
Explanation:
Igneous forms when rock is cooled and hardens by Magma.
And the option granite, which forms as magma cools deep underground
Hope it helps have a Good Day
40 g of NaCl is added to 1500 g of water. What is the molality of the resulting
solution?
Molality = moles of solute/mass (in kg) of solvent
The solute here is NaCl, of which you have 40 g or 40/58.4428 = 0.6844 moles NaCl.
The solvent here is water, of which you have 1500 g or 1.500 kg H2O.
The molality of the resulting solution would thus be 0.6844 moles NaCl/1.500 kg H2O = 0.4562 mol/kg.
If you have to consider sig figs, then your final answer would have one sig fig (40 g has one sig fig). In that case, your final answer would be 0.5 mol/kg.
1. How many liters of a 0.50 M solution are needed to give 3.5 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 do I do nunber 8?
Answer:
DONT CLICK THAT LINK THAT IS HACK AND VIRUS
Explanation:
What is the electron configuration of the calcium ion?
Answer: Calcium ion Ca² : 1 s² 2s² 2p ^6 (sorry I don't get 6 similar way as 2) 3s² 3p^6
Also 18 electrons, because Calcium donates two 4s electrons
Explanation:
how many grams of sulphur contain 3.0×1021 atoms
Answer:
There are 0.16 g of sulphur in 3.0 × 10²¹ atoms.
Explanation:
One mole of a substance contains 6.02 × 10²³ particles
One mole of sulphur atom contains 6.02 × 10²³ atoms
Number of moles of sulphur present in 3.0 × 10²¹ atoms = 3.0 ×10²¹/6.02 10²³
Number of moles of sulphur atom = 0.00498 moles of sulphur atom
The mole of a substance is related to its mass by a quantity known as molar mass which is defined as the mass of one mole of that substance.
Molar mass of sulphur atom = 32 grams per mole (g/mol)
Mass of 0.00498 moles of sulphur atom = 0.00498 moles × 32 g/mol
Mass of sulphur = 0.16 g
Therefore, there are 0.16 g of sulphur in 3.0 × 10²¹ atoms.
PLEASE HELP I WILL MARK YOU BRAINLIEST !!If you react 4.25 moles of FeCl2, how many moles of Cl2 did you also react?
PLEASE IM BEGGING FOR HELPPPPP
Answer:
2 FeCl2 + Cl2 -> 2 FeCl3
According to numbers in reaction
Amount of Cl2 is half of FeCl2
Explanation:
Consider the following reaction occurring in a 1.0 L container:
H2 (g) + I2 (g) → 2 HI (g)
State 2 requirements for a successful collision between H2 and I2.
Answer:
jjjjajwhejwhswjiwiwvssvwvow9qiwgdvdbslw
khan academy sucks. can someone answer this? :)
do i have to know the chemical and physical properties of alloys? only chemistry students answer this.
Answer:
yes you do so you know how strong it is how maluble it's is so it can be customised to it's specific use
Answer:
alloy's properties are usually different from those of its component elements. Alloy constituents are usually measured by mass. Unlike pure metals, most alloys do not have a single melting point; rather, they have a melting range in which the substance is a mixture of solid and liquid.
physical properties of alloys:-Alloy steels have a wide range of special properties, such as hardness, toughness, corrosion resistance, magnetizability, and ductility. Nonferrous alloys, mainly copper–nickel, bronze, and aluminum alloys, are much used in coinage.
chemical properties of alloys:-Pure metals are useful but their applications are often limited to each individual metal's properties. Alloys allow metal mixtures that have increased resistance to oxidation, increased strength, conductivity, and melting point; Essentially any property can be manipulated by adjusting alloy concentrations.
dnt learn all thr properties.
these are the main properties..u can learn thse only. hope it will help u