Answer:
300 servings
Explanation:
there are 1000mgs in every gram so divide that by 100 to get the servings which is 10 then multiply it by 30 , once for each gram. and you get 300.
Which information about an atom can a period number give you?(1 point)
A_ how many bonds it will make
B_ how many energy levels it has
C_ the number of valence electrons it has
D_ the ionic charge it forms
Answer:
A
Explanation:
How does increasing the temperature of a liquid below the boiling point affect
the motion of the particles in the liquid?
What does the -40, -42, -43, -44, -46,-48 mean for each isotope of Calcium?
Ammonium carbonate solution is added to dilute nitric acid. What is the balanced chemical equation?
Musical instruments like trumpets and trombones are made from an alloy called brass. Brass is composed of copper and zinc atoms and appears homogeneous under an optical microscope. The approximate composition of most brass objects is a 2:1 ratio of copper to zinc atoms, but the exact ratio varies somewhat from one piece of brass to another. (a) Would you classify brass as an element, a compound, a homogeneous mixture, or a heterogeneous mixture
Answer:
There are various substances found in nature, which are classified as an element, compound, and mixtures. Elements are pure substances, which are found in the simplest form, compounds are formed by the combining of two or more atoms of the same or different elements. Mixtures are categorized into homogenous and heterogenous, which are based on the composition of the mixture.
Explanation:
The homogenous mixtures are defined as the mixtures in which substances or components are evenly distributed and cannot be distinguished by each other. For example, detergent, air, and water. Alloys are also considered homogenous mixtures because the elements are mixed in some particular ratio. For instance, brass and steel are such types of homogenous alloys. In brass, the solid solution of copper and zinc are mixed in a specific ratio (2:1). However, the different instruments have different ratios of brass. The brass is classified as a homogenous mixture. In contrast, heterogeneous mixtures are those in which the composition of substances is not uniform. For example, oil and water.
write about injector use in gas chromatography in detail. (don't copy from online sites )
Answer:
Gas chromatography is a common type of chromatography used in analytical chemistry for separating and analyzing compounds that can be vaporized without decomposition. Typical uses of GC include testing the purity of a particular substance, or separating the different components of a mixture. In preparative chromatography, GC can be used to prepare pure compounds from a mixture
as chromatography is a term used to describe the group of analytical separation techniques used to analyze volatile substances in the gas phase. In gas chromatography, the components of a sample are dissolved in a solvent and vaporized in order to separate the analytes by distributing the sample between two phases: a stationary phase and a mobile phase. The mobile phase is a chemically inert gas that serves to carry the molecules of the analyte through the heated column. Gas chromatography is one of the sole forms of chromatography that does not utilize the mobile phase for interacting with the analyte. The stationary phase is either a solid adsorbant, termed gas-solid chromatography (GSC), or a liquid on an inert support, termed gas-liquid chromatography (GLC).
Introduction
In early 1900s, Gas chromatography (GC) was discovered by Mikhail Semenovich Tsvett as a separation technique to separate compounds. In organic chemistry, liquid-solid column chromatography is often used to separate organic compounds in solution. Among the various types of gas chromatography, gas-liquid chromatography is the method most commonly used to separate organic compounds. The combination of gas chromatography and mass spectrometry is an invaluable tool in the identification of molecules. A typical gas chromatograph consists of an injection port, a column, carrier gas flow control equipment, ovens and heaters for maintaining temperatures of the injection port and the column, an integrator chart recorder and a detector.
To separate the compounds in gas-liquid chromatography, a solution sample that contains organic compounds of interest is injected into the sample port where it will be vaporized. The vaporized samples that are injected are then carried by an inert gas, which is often used by helium or nitrogen. This inert gas goes through a glass column packed with silica that is coated with a liquid. Materials that are less soluble in the liquid will increase the result faster than the material with greater solubility.The purpose of this module is to provide a better understanding on its separation and measurement techniques and its application.
Explanation:
Purpose of gas chromatography
The main purpose of the gas chromatography technique is to separate the compounds that possess:
High volatility Low molecular weights Thermal stabilityA 0.450 M solution of HCl is prepared by adding some 1.50 M HCl to a 500 mL volumetric flask and diluting to the mark with deionized water. What volume of 1.50 M HCl must be added
Answer:
150 mL of 1.50 M HCL
Explanation:
So the equation you need to solve this equation is:
M1*V1=M2*V2 --> M1= Molarity of the acid you are diluting V1= Volume of the solution you need to dilute. M2=The molarity of thee solution you have made. V2=Volume of the solution you have made
M1= 1.50 M HCL
V1= Unknown
M2=0.450 M HCL
V2= 500 mL
Simple algebra says that V1= (1.5*500)/.450 = 150 mL of 1.50 M HCL
Please help me please find the answer
Please do this
Please do this
Plzz
Plzz
Total distance=60m+40m=100m
Total Time=6+4=10s
#a
[tex]\boxed{\sf Speed=\dfrac{Distance}{Time}}[/tex]
[tex]\\ \sf\longmapsto Speed=\dfrac{100}{10}[/tex]
[tex]\\ \sf\longmapsto 10m/s[/tex]
#b
Displacement=AC=60m
[tex]\\ \sf\longmapsto Velocity=\dfrac{Displacement}{Time}[/tex]
[tex]\\ \sf\longmapsto Velocity=\dfrac{60}{10}[/tex]
[tex]\\ \sf\longmapsto 6m/s[/tex]
#C
Distance=60m
time=5s
[tex]\\ \sf\longmapsto Velocity=\dfrac{60}{5}=12m/s[/tex]
#d
The velocity of A to C is greater than Velocity from C to A
(WILL MARK BRAINLIEST)SOME1!! Trying to Turn this In! Please HELP ASAP! SOME1?
1. Which statement correctly describes the relationship between the volume of a gas and its temperature, in Kelvin, assuming pressure is held constant?(1 point)
The relationship is directly proportional; as temperature increases, volume decreases in the same way.
The relationship is inversely proportional; as temperature increases, volume increases in the same way.
The relationship is inversely proportional; as temperature increases, volume decreases in the same way.
The relationship is directly proportional; as temperature increases, volume increases in the same way.
2. Which statement explains the molecular changes that occur in an enclosed gas as the pressure increases and the temperature is held constant?(1 point)
An increase in pressure causes particles to move closer together, decreasing the volume.
An increase in pressure causes particles to move farther apart, decreasing the volume.
An increase in pressure causes particles to move closer together, increasing the volume.
An increase in pressure causes particles to move farther apart, increasing the volume.
3. The ideal gas law is represented by PV=nRT. As volume is held constant and the temperature increases, how would the pressure be expected to change?(1 point)
It would remain constant.
It would increase.
It would become zero.
It would decrease.
4. When the pressure of a gas decreases, which quantity will increase, assuming all other variables are held constant?(1 point)
V
R
T
n
5. Two balloons hold two different gases. The gases are held at the same pressure, volume, and temperature. Which quantity can differ between the two gases?(1 point)
the molar volume of each gas
the gas constant of each gas
the mass of each gas
the number of moles of each gas
Answers
1) the relationship is directly proportional, as temperature increases, volume increases In the same was.
2) an increase in pressure causes particles to move closer together, decreasing the volume.
3) it would increase
4)V.
5) the mass of each gas
1) The relationship between volume of a gas and its temperature, in Kelvin, assuming pressure is held constant is best shown by the statement; "The relationship is directly proportional, as temperature increases, volume increases in the same way."
2) The statement " an increase in pressure causes particles move closer together, decreasing the volume." explains the changes that occur when pressure is increased at constant temperature.
3) From the ideal gas law, the pressure increases as temperature increases
4) Following from Boyle's law; the volume decreases as the pressure increases.
5) The number of moles of each gas of each gas can be different.
Charles law states that; the volume of a given mass of gas is directly proportional to its temperature at constant pressure. This implies that, given a mass of gas, the temperature increases as the volume increases at constant temperature.
According to Boyle's law the volume of a given mass of gas is inversely proportional to its volume at constant temperature. This simply implies that as pressure increases as volume decreases(inverse proportionality and vice versa).
The pressure and temperature are directly proportional to each other when other variables are held constant.
From Avogadro's law, the volume of a given mass of gas is directly proportional to the number of moles( V α. n). Therefore, the number of moles of each gas of each gas can be different when the gases are held at the same pressure, volume, and temperature.
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How is scientific observation done properly and safely using laboratory equipment?
Which one is the strongest acid?
•Formic acid
•oleic acid
•Malnoic acid
•None
Can someone do this for me!!????PLEASEEEE
Answer:
no that's worth points
Explanation:
3. What is the best explanation for the decrease in first ionization energy moving from Be to B?
(A) Moving from Be to B, more electrons are added to the
atoms, thus increasing the electron-electron repulsions.
(B) Moving from Be to B, more protons in the nucleus
attract the valence electrons, making it harder to remove
the electrons.
(C) The electrons in Be are being removed from a full sub- shell, which is more stable than the half-filled sub-shell in B.
(D) The electrons in Be are located in the 2s subshell. These electrons penetrate closer to the nucleus than the 2p electrons in B.
Answer:
The electrons in Be are located in the 2s subshell .These electrons penetrate closer to the Nucleus than the 2p electrons in B
Explanation:
See the Electronic Configurations
[tex]\\ \sf\longmapsto Be=1s^22s^2[/tex]
[tex]\\ \sf\longmapsto B=1s^22s^22p^1[/tex]
2s orbitals are more powerful than 2p orbitals.The best explanation for the decrease in first ionization energy moving from Be to B is option d. The electrons in Be are located in the 2s subshell.
The Explanation for reducing the first ionization energy:When there is reduction in the first ionization energy that moved from be to B so here the electrons in Be should be located in the 2s subsell.
Also, these electrons should penetrate closer to the nucleus as compared to the 2p electrons in B.
Hence, the option d is correct.
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To explain the photoelectric effect, Albert Einstein linked the photoelectric effect to an idea from which scientist?
Heinrich Hertz
Isaac Newton
Max Planck
Thomas Young
Answer:
C. Max Planck
Explanation:
IM JUST HIM
When you wash your hands or dishes, you probably don't use just water. In 5-7 sentences, explain what
you use to help you wash up, how it works, and why you think it works.
Hello! here is a paragraph you can use, that I type up to explain, make sure to not copy word for word of what I said. :)
What I use to wash up is soap. Soap has a certain ph level and includes acids and alkaline that enables water to mix and create soap foam to clean. Soap can come in many shapes and sizes, and can be either liquid, solid, or even foamy. I think soap works because when you use friction between your wet hands and the soap bar, you are rubbing the substances of the soap that clean your hands to clean your hands. I think the friction of the rubbing creates a layer of soap that can be used to clean, and when you increase friction the more change of the soap.
Have a great day,
I hope this helps!
To scientific notation 5.029m
Answer:
5.029 × 100
Explanation:
Which of the following is a physical change?
A. Water reacting with potassium
B. Alcohol evaporating
C. Water splitting into hydrogen and oxygen
D. Alcohol burning
Explanation:
Alcohol burning
hope this helps you
Find the mass of an object with 30 cm3 and has a density of 2 g/cm3 (input number only)
formation of a precipitate
formation of gas (without heat)
color change
Answer: 60 g
Explanation: Mass is the product of density and volume.
Density (2 g/cm^3)
Volume (30 cm^3)
(2 g/cm^3)*(30 cm^3) = 60 g
Convert 5.15 meters to inches
Answer:
202.76 inches
Explanation:
1 meter = 39.37 inches
5.15 × 39.37 = 202.7559,when rounded it's 202.76
Characteristics used to describe matter are called
O
A. physical properties.
O
B. chemical properties.
O
C. both A and B.
O
D. neither Anor B.
Answer:
A.physical properties
What is an atomic number
Answer:
the number of protons is called the atomic number
hope it helps you buddy
Answer: number of protons in an atom
Explanation:
Which of the following are considered elements:
Answer:
considered as element
Helium He
the ion Te2- has how many protons
HELP I WILL MARK YOU AS THE BRAINLIEST ANSWER
The atomic radii of elements on the periodic table generally _______ from left to right and _______ from top to bottom.
A.
increase; decrease
B.
decrease; increase
C.
stay the same; increase
D.
increase; increase
Hey there! Here is the answer:
B.) decrease; increase
Here's why:
As you move from left to right across a period on the periodic table the size of an atom will decrease. As you move from top to bottom down a group on the periodic table the size of an atom will increase.
I really hope this answer helps you out! :)
Aqueous aluminium bromide and solid zinc are formed by the reaction of solid aluminum and aqueous zinc bromide. Write a balanced chemical equation for this reaction.
Answer:
3 ZnBr2(aq) + 2Al (s) ====>2AlBr3 (aq) + 3 Zn(s),
Briefly identify a few characteristic points about the following bonds:
a. Ionic bonds
b. Covalent bonds
c. Hydrogen bonds.
Answer:
Chemical bonds hold molecules together and create temporary connections that are essential to life. Types of chemical bonds including covalent, ionic,
Explanation:
Ionic bond will form by transferring the electrons , covalent bond formed by sharing the electrons while hydrogen bond will be formed by bond between electronegative atom and hydrogen molecule.
What is ionic bond?
The chemical bond is formed when electrons are transferred from one atom to another. An ionic bond is the name for this type of relationship. Their melting and boiling points are quite high. Ionic chemicals, in other words, seem to be non-volatile.
What is covalent bond?When one non-metal reacts with just another non-metal, electrons are shared across their atoms, resulting in the development of a covalent bond. Among two or more atoms with same non-metal, a covalent connection can be established.
What is hydrogen bond?Hydrogen bonding is just a sort of dipole-dipole attraction that occurs between molecules rather than a covalently link with a hydrogen atom.
To know more about hydrogen bond , covalent bond and ionic bond,
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Gold can be hammered into decorative gold leaf, which is only 1.00E-07m thick. If 1.35 troy ounce of gold is hammered into gold leaf, what is the area that can be covered when used for decoration? 1 troy ounce = 31.1g, and the density of gold is 19.3 g/cm^3
The area that can be covered when used for decoration is 21.8 m².
To solve this question, we'll by converting 1.35 troy ounce to grams (g). This can be obtained as as illustrated below:
1 troy ounce = 31.1g
Therefore,
1.35 troy ounce = 1.35 x 31.1
1.35 troy ounce = 41.985 gThus, 1.35 troy ounce is equivalent to 41.985 g.
Next, we shall determine the volume of the gold leaf. This can be obtained as follow:
Mass = 41.985 g.
Density = 19.3 g/cm³
Volume =?[tex]Density = \frac{mass}{volume } \\\\19.3 = \frac{41.985}{Volume }[/tex]
Cross multiply
19.3 × Volume = 41.985
Divide both side by 19.3
[tex]Volume = \frac{41.985}{19.3}[/tex]Volume = 2.18 cm³Next, we shall convert 2.18 cm³ to m³.
1 cm³ = 1×10¯⁶ m³
Therefore,
2.18 cm³ = 2.18 × 1×10¯⁶ m³
2.18 cm³ = 2.18×10¯⁶ m³Thus, 2.18 cm³ is equivalent to 2.18×10¯⁶ m³.
Finally, we shall determine the area. This can be obtained as follow:
Volume = 2.18×10¯⁶ m³
Thickness = 1×10¯⁷ m
Area =?
Volume = Area × Thickness
2.18×10¯⁶ = Area × 1×10¯⁷
Divide both side by 1×10¯⁷
[tex]Area = \frac{2.18*10^{-6} }{1*10^{-7} }\\\\[/tex]Area = 21.8 m²Therefore, the area that can be covered when used for decoration is 21.8 m²
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The gas laws explain how __ gases ___ . There is actually no such thing as an ideal gas, but these laws still explain generally how gases behave. The separate laws combine into an “_____”.
what’s the missing blanks ?
The gas laws explain how ideal gases are . There is actually no such thing as an ideal gas, but these laws still explain generally how gases behave. The separate laws combine into an equation ”.
Hope it helps you...
Answered by Benjemin
Atoms are mostly made up of the
between electrons and the nucleus.
Answer:
yes
Explanation:
imagine you find a bowl filled with clear liquid in your kitchen list three liquids it might be
Answer: Three liquids that could fill a bowl with clear liquid in your kitchen could be alcohol, dish soap, juice (without pectin or pulp), sports drinks, and water (carbonated, coconut, flavored, or plain).
