Answer:
KilogramsExplanation:
[tex]--------------------------------------------[/tex]
Microgram = 0.000001 Grams = Smallest Unit of Weight
1 ) Milligram = 0.001 Grams =
2 ) Centigram = 0.01 Grams
Decigram = 0.1 Grams
3 ) Gram = 1 Gram
Dekagram = 10 Grams
Hectogram = 100 Grams
4 ) Kilogram = 1000 Grams = Largest Unit of Weight = Answer
[tex]--------------------------------------------[/tex]
Hope this helps! <3
[tex]--------------------------------------------[/tex]
Kilograms are the largest unit among the options listed.
The metric system is a decimal-based system of measurement widely used around the world. It provides a standardized and convenient way to express measurements by utilizing prefixes that represent powers of 10.
In the metric system, the base unit for measuring mass is the gram (g). The gram is a relatively small unit, and to express larger or smaller masses, prefixes are added to the base unit. Here are some commonly used metric prefixes for mass.
The largest measurement among the options provided is kilograms (kg). Kilograms are larger units of measurement compared to grams (g), milligrams (mg), and centigrams (cg). The metric system follows a decimal-based system, where each unit is 10 times larger or smaller than the adjacent unit.
1 kilogram (kg) is equal to 1,000 grams (g), 1,000,000 milligrams (mg), and 10,000 centigrams (cg). Therefore, kilograms are the largest unit among the options listed.
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2AI + 3H2SO4 -> Al2(SO4)3 + 3H2
How many grams of Al2(SO4)3 would be formed if 250g H2SO4 completely reacted with
aluminum?
2
181.2 g
313.8 g
273.7 g
201.9 g
Please help!!!!!
Answer:
B. 313.8
Explanation:
What is the advantage of using Microsoft Excel to create a graph, as opposed to pen and paper?
Chemistry class I NEED HELP FAST
Answer:
the advantage of using Microsoft Excel to create a graph, as opposed to pen and paper is it will help you get the right answer
Explanation:
Think about how particles are arranged inside atoms. Please name and describe those three particles, and describe how the particles are arranged inside atoms. Some topics to include are: the charge of the particles, the mass of the particles, and where the particles are located.
which of these is a characteristic
of index fossils
Answer: A index fossil is any animal or plant preserved in the rock record of the earth that is characteristic of a particular span of geologic time or environment. A useful index fossil must be distinctive or easily recognizable, abundant, and have a wide geographic distribution and a short range through time.
Explanation:
What energy is formed when you put your hands together and rub them up and down rapidly
Answer:
When you rub your hands together thats mechanical energy. Once you hands warm up its heat energy.
Does anyone know how to determine if a reaction is a redox or not?
2Ca+O2→2CaO2 is the reaction. I've already made it a balanced equation, I just need to determine if its a redox or not.
Thank you!
The reaction is included in a redox reaction
Further explanation:
Given
Reaction
2 Ca + O₂ → 2 CaO
Required
a redox reaction
Solution
Redox reactions are reactions where there is a change in oxidation number
Oxidation is an increase/increase in oxidation number, while reduction is a decrease/decrease in oxidation number.
Reducing agents are substances that experience oxidation and oxidizing agent are substances that experience reduction
in the above reaction is included in a redox reaction because there is a change in oxidation number
Ca⇒Ca²⁺+ 2e⁻(for balanced equation : 2Ca⇒2Ca²⁺+4e⁻)
Oxidation ( 0 to +2)
O₂+2e⁻⇒O²⁻(for balanced equation : O₂+4e⁻⇒2O²⁻)
Reduction (0 to -2)
two negative charges are placed near each other. what happens between the charges
Answer:
repulsion
Explanation:
Answer:
Explanation:
In contrast to the attractive force between two objects with opposite charges, two objects that are of like charge will repel each other. ... Similarly, a negatively charged object will exert a repulsive force upon a second negatively charged object. Objects with like charge repel each other.
Can someone define these for me
Answer:
These are all in order....
Explanation:
- closed system usually absorbs thermal energy from its surroundings, which is heat transfer into the system
- a solute is a substance dissolved in another substance, known as a solvent
- A solvent is a substance that dissolves a solute, resulting in a solution. A solvent is usually a liquid but can also be a solid, a gas, or a supercritical fluid
- a liquid mixture in which the minor component (the solute) is uniformly distributed within the major component (the solvent)
- a nuclear reaction in which a heavy nucleus splits spontaneously or on impact with another particle, with the release of energy
- a nuclear reaction in which atomic nuclei of low atomic number fuse to form a heavier nucleus with the release of energy.
- Half-life is the time required for a quantity to reduce to half of its initial value
- the determination of the age or date of organic matter from the relative proportions of the carbon isotopes carbon-12 and carbon-14 that it contains. The ratio between them changes as radioactive carbon-14 decays and is not replaced by exchange with the atmosphere.
- any system closed to all transfers of matter and energy, the mass of the system must remain constant over time, as the system's mass cannot change, so quantity can neither be added nor be removed
how many dots would a dot diagram for selenium, one of the group 16 elements, have?
Answer:
Because selenium is in the 16th column on the periodic chart, it has 6 valence electrons. Thus, the Lewis structure (or electron dot structure) for selenium has 6 dots around it.
It will look similar to this without the underscores:
__.
. Se:
_. .
Explanation:
The Lewis structure (or electron dot structure) for selenium has 6 dots around it.
What is an electron dot structure?Electron dot diagrams are diagrams in which the valence electrons of an atom are shown as dots distributed around the element's symbol.
Selenium is in the 16th column on the periodic chart, it has 6 valence electrons. Thus, the Lewis structure (or electron dot structure) for selenium has 6 dots around it.
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HELPPPPPPPPPPPPPPPPPPP
Answer:
not sure about the first one, but i know SDS provides information about the last 3.
Explanation:
Which Ion has the same electron configuration as an Ar atom
1. Cl -
2. F -
3. Li+
4. Na +
How can magnetic force be exerted on objects?
1)Over a distance and anytime an object is in a magnet's field of influence.
2)Only through objects.
3)Only by touching an object.
Help please When you are measuring your pulse (heart beats per minute) what system are you monitoring?
A. Digestive
B. Respiratory
C. Circulatory
D. Integumentary (skin)
balancing equations help!!
True or false
Equal forces acting on one object in opposite directions are called balanced forces
Answer:
True
Explanation:
Forces, equal in magnitude and opposite in direction, and cancel each other out are called Balanced Forces.
Balanced Forces DO NOT cause any change in the velocity of the object, but the Object may correspond to a change in shape or size.
Example :
Blasting a balloon by compressing it tightly with both hands, roughly with an equal force, is a practical example of Balanced Forces. In this case, the balloon before the burst stays at a state of rest and same after the burst. But the burst or the compression, causes a change in the shape of the balloon.
how many atoms are there in 8.08 moles of carbon dioxide
Answer:
145.97×10²³ atoms
Explanation:
Given data:
Number of moles of CO₂ = 8.08 mol
Number of atoms of CO₂ = ?
Solution:
1 mole of CO₂ contain 1 mole C atom.
8.08 mole contain 8.08× 1 = 8.08 mole of C atom.
1 mole of CO₂ contain 2 moles of O atom.
8.08mole contain 8.08×2 = 16.16 mole of O atom.
Total number of moles of atoms = 8.08 mole + 16.16 mole
Total number of moles of atoms = 24.24 mol
Number of atoms of CO₂:
1 mole of any substance contain 6.022×10²³ atoms.
24.24 mol ×6.022×10²³ atoms / 1 mol
145.97×10²³ atoms
What is the formula for Iron (III) Bromate
Answer:
[tex]\boxed {\boxed {\sf FeBr_3}}[/tex]
Explanation:
We can assume that this is a neutral compound, meaning the charges of the ions are balanced.
We are given: Iron (III) Bromide.
We want to find the chemical formula.
First, find the symbols of the elements.
Fe: Iron Br: BromineNext, find the charges on the ions.
The Roman Numeral 3 in parentheses (III). This indicates the iron cation has a charge of +3.
We need to balance out the charge of +3 with the bromine. Bromine can have a charge of +5, +1, and -1. Since we already have a cation (positive ion), bromine must be an anion (negative ion). We also know the charge must be negative to balance out the compound.
But, the charge is only -1. That would still leave the compound unbalanced. Therefore, we must have 3 bromine atoms to balance out the iron. The 3 will become a subscript.
So, put all the information together and write the formula:
FeBr₃
A chemical formula lists the constituent elements of a compound together with the number of atoms in each element's smallest unit, such as a molecule or formula unit. Here the formula for Iron (III) Bromate is FeBr₃.
A compound's chemical composition is symbolically represented by its chemical formula. Chemical formulas reveal the elements that make up a compound's molecules as well as the ratio in which their atoms combine to create those molecules.
The sorts of atoms and their numbers in an element or compound are described by a chemical formula. Each element's atoms are denoted by one or two distinct letters. a collection of chemical symbols indicating the constituent elements and their corresponding ratios.
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Show your work with good use of units, rounding, and significant figures. [Hint: it is good practice to show the value of your answer before you round off to the final answer with the correct significant figures!]
(8 points) How much heat is required to convert 10.00 g of ice at –20.00°C to water at 25°C. The specific heat of ice is 2.09J/g°C; the specific heat of water is 4.182 J/g°C; the heat of fusion is 333.0 J/g.
Group of answer choices
Heat required : 4.8 kJ
Further explanationThe heat to change the phase can be formulated :
Q = mLf (melting/freezing)
Q = mLv (vaporization/condensation)
Lf=latent heat of fusion
Lv=latent heat of vaporization
The heat needed to raise the temperature
Q = m . c . Δt
1. heat to raise temperature from -20 °C to 0 °C
[tex]\tt Q=10\times 2.09\times (0-(-20)=418~J[/tex]
2. phase change(ice to water)
[tex]\tt Q=10\times 333=3330~J[/tex]
3. heat to raise temperature from 0 °C to 25 °C
[tex]\tt Q=10\times 4.18\times (25-0)=1045~J[/tex]
[tex]\tt Q~tot=418+3330+1045=4793~J\rightarrow rounding~and~2~sig~figs=4.8~kJ[/tex]
Using the model of the periodic table, which element pictured represents an unreactive gas?
Answer:
2
Explanation:
Nobel gasses are not reactive and are the far right group on the periodic table. This is because they have a full valence electron shell which is the most stable electron configuration. Most reactions occur in order for an atom to fill its valence shell and since they already have a full valence shell there is no reason for them to react.
What is the molar mass of B,(Croa)g?
a. 186 g/mol
b. 369 g/mol
C. 232 g/mol
d. 250 g/mol
Condensation point and freezing point of argon in KELVIN.
Answer:
Condensation: 423.3 K
Freezing: 83.96 K
(this is all i could figure out :) hope it helps)
A hot metal plate at 150°C has been placed in air at room temperature. Which event would most likely take place over
the next few minutes?
O Molecules in both the metal and the surrounding air will start moving at lower speeds.
O Molecules in both the metal and the surrounding air will start moving at higher speeds.
O The air molecules that are surrounding the metal will slow down, and the molecules in the metal will speed up.
O The air molecules that are surrounding the metal will speed up, and the molecules in the metal will slow down.
Answer:
It would be the third answer.
Explanation:
This is because over the next few minutes, the heat would radiate away from the atoms in the metal plate and the atoms around the plate would absorb this radiation.
6) Define Hydrogen bonds
A. A force created by differences in electronegativity and the small size of the hydrogen atom
make them especially strong.
B. A force created by similarities in electronegativity and the small size of the hydrogen atom
make them especially strong,
C. Forces created by temporary dipoles that result from the movement of electrons in non-
polar molecules.
D. A force created by differences in electronegativity and the large size of the hydrogen atom
make them especially strong,
E. The force between polar molecules when the opposite partial charges of a molecule exert a
force on each other
Answer:
A hydrogen bond is an intermolecular force (IMF) that forms a special type of dipole-dipole attraction when a hydrogen atom bonded to a strongly electronegative atom exists in the vicinity of another electronegative atom with a lone pair of electrons. Intermolecular forces (IMFs) occur between molecules. Other examples include ordinary dipole-dipole interactions and dispersion forces. Hydrogen bonds are are generally stronger than ordinary dipole-dipole and dispersion forces, but weaker than true covalent and ionic bonds.
Explanation:
Potasyum-40 küçük atom numaralı doğal radyoaktif birkaç element izotopundan biridir ve doğada K izotopları içerisindeki bolluk yüzdesi %0,012'dir. 1,65 mg K/mL içeren bir bardak sütü içtiğiniz zaman kaç tane 40K atomu yutmuş olursunuz? (1 Bardak süt 225 mL, K: 39,10 g/mol)
Answer:
6.707 × 10¹⁷
Explanation:
From the information given:
40 ^ K kütlesi = sütteki K kütlesi × 40 ^ K / 100 kütle yüzdesi
nerede;
sütteki K kütlesi = 1.65 mg of K/mL × 225 mL = 371.25 mg of K
∴
40 ^ K kütlesi = 371.25 × 0.012/100
40 ^ K kütlesi = 0,04455 mg = 4.455 × 10⁻⁵ grams
40 ^ K mol sayısı = 40 ^ K kütlesi / molar kütle
= 4.455 × 10⁻⁵/40
= 1.11375 × 10⁻⁶
Son olarak, 40 ^ K = mol × Avogadro sayısı atomları
= 1.11375 × 10⁻⁶ × 6.022 × 10^23
= 6.707 × 10¹⁷
Compared to ionic compounds, molecular compounds generally have
A. good conductivity.
B. greater densities.
C. more chemical bonds.
D. a low boiling point.
Compared to ionic compounds, molecular compounds generally have a low boiling point and the correct option is option D.
What are Molecular compounds?
Molecular compounds are held together by covalent bonds. They are also called covalent compounds.
Covalent bonds are responsible for many of the properties of covalent compounds. Covalent compounds have relatively low boiling points, cannot conduct electricity, and may not dissolve in water.
Unlike ionic compounds, covalent compounds do not have freely moving electrons, so they cannot conduct electricity.
The individual molecules of covalent compounds are more easily separated than the ions in a crystal, so most covalent compounds have relatively low boiling points.
Therefore, compared to ionic compounds, molecular compounds generally have a low boiling point and the correct option is option D.
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What is the redox reaction? And how does the redox reaction happen inside batteries?
Answer:
It is called a reduction-oxidation, oxide-reduction reaction, or simply as a redox reaction, any chemical reaction in which one or more electrons are transferred between the reactants
Redox battery is an example of both a Flow Battery and a two electrolyte system.In this case, it depends on two different active aqueous electrolytes of vanadium dissolved in sulfuric acid separated by a membrane at which ionic interchange takes place.
Thats my opinión though.
FOR 35 POINTS & A BRAINIST*
1.) For an atom of sulfur, there are
A.) two electron shells with 6 valence electrons
B.) three electron shells with 6 valence electrons
C.) four electron shells with 6 valence electrons
D.) five electron shells with 6 valence electrons
2.) Which atom has four electron shells with 7 valence electrons?
A.) F
B.) CI
C.) Br
D.) I
3.) Which atom has three electron shells with 8 electrons in its outermost orbit?
A.) He
B.) Ne
C.) Ar
D.) Kr
4.) Which method should be used to draw electrons that are involved in a collision during a chemical reaction?
A.) Bohr's model
B.) Lewis dot model
C.) Addition model
D.) Subtraction model
You are making lemonade and the calls for 6 cups Lemon juice (L), 3 Cups of sugar (S) and 5 cups of water (W) to make 12 Cups of Lemonade (LA): your formula is:
6 L + 3 S + 5 W = 12 LA
You are given 9 cups of lemon juice (L), 8 cups of sugar (S) and unlimited water (W).
How many cups of lemonade can you make?
1. 9
2. 12
3. 18
4. 32
Answer:
18 Cups
Submitted the assignment
Explanation:
What is the difference between moles and mass?
Which element has a mass number of 32?
a. argon ion
b. silicon ion
C. silicon
d. sulfur
