give chemical tests to distinguish between saturated and unsaturated compound
bromine is used to distinguish between saturated and unsaturated compounds. when bromine water is added to the unsaturated compound, bromine that added to the unsaturated compound and the red brown colour of bromine water is discharged.
so ...this is the question and I hope you get it right one
Answer:
About 96 grams per mole
Explanation:
The chemical formula of ammonium carbonate is [tex](NH_4)_2CO_3[/tex]. This means that breakdown of moles of atom per mole of molecule is:
2 moles of nitrogen, with a molar mass of around 14
8 moles of hydrogen, with a molar mass of around 1
1 mole of carbon, with a molar mass of about 12
3 moles of oxygen, with a molar mass of about 16
The molar mass of ammonium carbonate is therefore:
2(14)+8(1)+1(12)+3(16)=28+8+12+48=about 96
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What is the dependent variable for "how does changing your laundry detergent affect how clean your clothes are?"
Dependent variables receive this name because, in an experiment, their values are studied under the supposition. The dependent variable is the cleanliness of the clothes.
What is the dependent variable ?It is something on which other elements depend. A test score, for instance, may be a dependent variable because it could vary based on a number of variables, including how much you studied, how much sleep you got the night before the test, and even how hungry you were.
A dependent variable is one that is altered as a result of the modification of an independent variable. Your independent variable "depends" on the outcome you're interested in measuring. Dependent variables are also referred to as: response elements (they respond to a change in another variable)
There are often two different sorts of variables in analytical health research. We anticipate that independent variables will have an impact on dependent variables.
Thus,The dependent variable is the cleanliness of the clothes.
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Which phrase describes the prime meridian
Answer:
It is a metaphorical line that divides the earth from north to south
Explanation:
How many neutrons are in one atom of the elemen, F-19?
Answer:
10
Explanation:
Answer: 10 neutrons
This isotope of fluorine has 9 protons, 9 electrons and 10 neutrons.
Explanation:
Jaiden is writing a report about the structure of the atom. In her report, she says that the atom has three main parts and two subatomic particles. Do you agree with her? Why or why not?
Answer:
The smallest constituent of an element is termed as an atom. According to Jaiden, an atom comprises two subatomic particles and three prime parts, however, this is incorrect as an atom comprises three subatomic particles and two main parts. The three subatomic particles are the protons, electrons, and neutrons. All these parts are smaller in comparison to an atom, thus, they are considered as subatomic particles.
To be considered as an atom, an atom is needed only electrons and neutrons, like hydrogen exhibit one electron and one proton. On the other hand, the overall charge of the atom is not affected by the presence of neutrons, it is the subatomic particle that only enhances the mass of the atom.
Answer:
I disagree with her because an atom has two main parts: the nucleus and the electron cloud. Atoms have three subatomic particles: protons, neutrons, and electrons.
Explanation:
Unit Test
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Which statement best describes the direction of heat flow by conduction between two samples of the same material?
Heat flows from faster molecules to slower molecules when they are near.
Heat flows from faster molecules to slower molecules when they collide.
Heat flows from slower molecules to faster molecules when they are near.
Heat flows from slower molecules to faster molecules when they collide.
Answer:
b
Explanation:
edge 2021
According to the concept of conduction,heat flows from faster molecules to slower molecules when they collide.
Conduction is defined as a process as a means of which heat is transferred from the hotter end of the body to it's cooler end.Heat flows spontaneously from a body which is hot to a body which is cold.
In the process of conduction,heat flow is within the body and through itself.In solids the conduction of heat is due to the vibrations and collisions of molecules .
There are 2 types of conduction:1) steady state conduction 2) transient conduction.According to the type of energy conduction is of three types:
1) heat conduction
2) electrical conduction
3)sound conduction
Heat is transferred from faster to slower molecules when they collide , thus the correct option is that heat flows from faster molecules to slower molecules when they collide.
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PLS HELP ! 5.00 mL of a stock solution, containing 0.200 M of Na3PO4 was pipetted into a 25.00 mL volumetric flask and made up to the calibration mark with deionised water. A serial dilution was carried out for another two times to obtain the final solution of desired concentration. Calculate the concentration of the final solution, express in ppm (by volume).
Answer:
262 ppm of Na₃PO₄
Explanation:
In a dilution, the concentration of the initial solution is decreased. When you take 5.00mL of the solution that is diluted to 25.0mL The solution is diluted 25/5 = 5 times
If you make another two serial dilutions the final solution wil decrease its concentration 5*5*5 = 125 times
As original solution containing 0.200 M of Na3PO4, the final solution will have a concentration of:
0.200M / 125 = 1.6x10⁻³M
Molarity is defined as the ratio between moles and liters. 1.6x10⁻³ moles of Na3PO4 in 1L are:
1.6x10⁻³mol ₓ (164g/mol) = 0.262g Na₃PO₄ / L
Assuming density of Na3PO4 as 1g/mL the concentration of the solution is:
0.262mL Na₃PO₄ / L
As 1mL = 1000μL:
262μL Na₃PO₄ / L
μL of solute per L of solution is equal to ppm, that means the solution has:
262 ppm of Na₃PO₄Another name for a statovolcano is a _____ volcano because it is made of alternating layers of thick, sticky lava and volcanic rock and ash. A. shield B. cinder C. composite D. pyroclastic
Answer:
Bcinder
Explanation:
) Based on your observations, what conclusion can you draw about the factors affecting the ability of an enzyme?
Answer:
Explanation:
Enzyme activity is affected by the increase in temperature.
enzyme activity is also affected by the change in ph.
enzyme activity is also affected when substrate concentration is not increased in a chemical reaction.
Based on your observations, enzyme activity is affected by the increase in temperature.Enzyme activity is also affected by the change in pH.
What are observations?
Observations are defined as a set of statements or facts which are recorded while conducting an experiment.Observations are made through sensing changes in the variables of the experiment.
It is specifically defined as an act of knowing or recording the changes in the variables of the experiment.Recording observations holds importance as recording observations avoid the experiment to be repeated over and over again.
It is important to note down observations so that the testing of hypothesis is made easier.There are four types of observations .Observations need to be descriptive and must be written in complete sentences and should include all the numerical data of the experiment.
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Consider the equation below. CaCO3(S) CaO(S) + CO2(g) What is the equilibrium constant expression for the given reaction?
Answer:
Option B. Keq = [CO2] [CaO]/ [CaCO3]
Explanation:
The balanced equation for the reaction is given below:
CaCO3(s) —> CaO(s) + CO2(g)
The expression for the equilibrium constant, Keq is simply the ratio of the concentration of the products to that of the reactants.
The expression for the equilibrium constant, Keq is given below:
Keq = [CO2] [CaO] / [CaCO3]
Answer: c) Keq= [co2]
Explanation:
edge 2023
What is the symbol, atomic number, atomic mass, # of protons, # of neutrons, # of electrons, ion charge for the beryllium ion?
Answer:
Symbol Be
atomic number 4
protons 4
neutrons 5
electrons 4
ion charge +2
Explanation:
Look at the periodic table and all the answers can be found there. If you would like to learn how to find them please message me below.
A battery has an electrical ______________ energy
Answer:
Electrical Energy
Explanation:
There are a variety of chemical and mechanical devices that are called batteries, although they operate on different physical principles. A battery for the purposes of this explanation will be a device that can store energy in a chemical form and convert that stored chemical energy into electrical energy when needed.
Molar mass if calcium nitrate
Answer:
About 164 grams
Explanation:
The molecular formula of calcium nitrate is [tex]Ca(NO_3)_2[/tex]. The molar mass of calcium is about 40, while the molar mass of nitrogen is about 14 and oxygen is about 16. Therefore, the molar mass of it is:
[tex]40+2(14+3(16))=40+2(14+48)=40+124=164[/tex]
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2 Points
A student blows a whistle. In which direction do the air particles vibrate with
respect to the direction the sound wave travels?
A. Perpendicular to
B. Parallel to
C. At a 45 degree angel to
D. At an unpredictable angel
Answer:
parallel to
Explanation:
In parallel direction the air particles vibrate with respect to the direction the sound wave travels. The correct option is B.
What is sound wave?A sound wave is the pattern of disturbance caused by the movement of energy as it propagates away from the source of the sound through a medium (such as air, water, or any other liquid or solid matter).
Sound waves are produced by object vibrations and pressure waves, such as a ringing cellphone.
Because sound waves are produced by compressions and rarefactions in the air, they are referred to as longitudinal waves. The air particles vibrate in a direction parallel to the propagation direction.
The particles in a longitudinal wave are displaced parallel to the direction of the wave. Compressions moving along a slinky are an example of longitudinal waves.
Air particles vibrate in a parallel direction to the direction of travel of the sound wave.
Thus, the correct option is B.
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5. Which contains more nitrogen: 60g of urea, (NH2)2CO, or 100g of ammonium sulphate, (NH4)2SO4
Answer:
Urea contains more nitrogen
Explanation:
1 mole of Urea contains 2 moles of Nitrogen and 1 mole of ammonium sulfate contains, also, 2 moles of nitrogen.
60g of urea (Molar mass: 60g/mol) contains:
60g × (1mol / 60g) = 1 mole. As 1 mole of urea contains 2 moles of nitrogen, moles of nitrogen are 2.
100g of ammonium sulfate (Molar mass: 132g/mol) contains:
100g × (1mol / 132g) = 0.758 moles.
As 1 mole of urea contains 2 moles of nitrogen, moles of nitrogen are 0.758×2 = 1.516 moles.
That means, urea contains more nitrogen.
If a substance changes its shape and size, is it a physical or chemical change? - chemical - physical - both
Which particle has no charge
Answer:
Neutron
Explanation:
whats the chemical formula for dilute hydroxide acid