Answers
Answer:
23: 6000560000000
24: 0.0015
25: 200
26: 0.0105
27: 600
28: 4023000
Explanation:
You have to move the decimal the same amount of times as the exponent says.
For example, like with the 6, you move it 2 decimals to the right (since it's positive), and the regular number would be 600.
Related Questions
you are given an unknown liquid and asked to determine its identity. You can measure only one physical property. you decide to heat the liquid. You record that the liquid turns vapor at 100c. this demonstrates which physical property. A. melting point B. boiling point C. ability to conduct electricity D. malleability
Answers
Answer:
b. boiling point
Explanation:
What is an atomic nucleus?
the outer part of an atom in which electrons move
the outer part of an atom in which neutrons move
the central part of an atom, composed of protons and neutrons
the central part of an atom, composed of protons and electrons
Answers
Answer:-
the central part of an atom compsed of protons and neutrons.
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Answers
The example of a unicellular organism is amoeba
Which element has a mass of 35.5?
Answers
Answer: Chlorine (Cl)
Explanation:
[tex]\sf{\underline{ Chlorine\red{(Cl)}}}[/tex] is the elements has a mass of 35.5 amu. and the atomic number is 17
is plasma a matter or no
Answers
Answer:
yes
Explanation:
it is very hot matter and solid, liquid and gas and plasma is the states of matter
Answer: Plasma is a state of matter that is often thought of as a subset of gases, but the two states behave very differently. ... But unlike ordinary gases, plasmas are made up of atoms in which some or all of the electrons have been stripped away and positively charged nuclei, called ions, roam freely. so True.
Explanation: hope this helps!
sulphur (iv)oxide reacts with hydrochloric acid solution .give reasons
Answers
Answer:
Hydrogen chloride - diluted solution. Sulfur dioxide ( SO 2) reacts with chlorine gas (Cl 2) in the presence of moisture to give HCl and H 2 SO 4. ... H 2 SO 4 and HCl are strong acids in aqueous solutions. If more HCl is added to the solution, then carbon dioxide gas, sodium chloride and water are produced.
how many water molecules self ionize in one liter of water
Answers
Answer:
yes
Explanation:
because I think it is correct fo u
Jasmin is planning to attend a softball game today. She is watching the weather forecast and notices a large "L" on the weather map for her area. What prediction can be made about the weather?
Its Science
Answers
Answer:
The softball game will still go on because the "L" symbolizes a low pressure system which usually brings sunny weather.
Explanation:
a) What is the role of neutrons in an atom?
b) How do we determine how many neutrons are in an atom?
Answers
Answer:
numer 1:Neutrons are required for the stability of nuclei, with the exception of the single-proton hydrogen nucleus. Neutrons are produced copiously in nuclear fission and fusion. They are a primary contributor to the nucleosynthesis of chemical elements within stars through fission, fusion, and neutron capture processes.
number 2:The number of neutrons is equal to the difference between the mass number of the atom (M) and the atomic number (Z).let me know if i helped
A formula unit represents the simplest ratio of elements in a
Answers
Answer:
formula unit
Explanation:
formula unit represents the simplest ratio of elements.
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Potassium iodide is an ionic compound.
Describe what happens, in terms of electron loss and gain, when a potassium atom reacts
with an iodine atom.
Answers
Answer:
In this reaction, potassium atoms lose electrons to form positively-charged potassium ions (oxidation) and iodine atoms gain electrons to form negatively-charged iodide ions (reduction).
Explanation:
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In this process, iodine atoms get electrons to produce negatively charged iodide ions, whereas potassium atoms lose electrons to form positively charged potassium ions. Oxidation and reduction takes place.
What is oxidation ?Redox reactions include a change in the oxidation state of the substrate. Similar to how reduction is the acquisition of electrons while oxidation is the loss of electrons or an increase in the oxidation state.
An oxidation process takes place when oxygen interacts with a substance or an element. Another way to think of oxidation is as the process of removing hydrogen from the species of reactants. Molecule, atom, or ion oxidation is the process of losing electrons.
Because they generate new functional groups in molecules or alter existing functional groups, oxidation processes are crucial in the synthesis of organic substances.
Thus, the iodine atom also experiences a change. The iodide atom gets one electron during the reaction with potassium, leaving it with eight electrons at its outer energy level.
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Could someone help me
Answers
Answer:
The space in the container so how small it is the more pressure is going to build up. YOUR WELCOME AND HAVR A GOOD DAY.
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Drag the tiles to the correct boxes to complete the pairs.
Which types of matter are these substances?
Tiles
element
compound
homogeneous mixture
heterogeneous mixture
Pairs
a cloud, which consist of small water droplets
distributed throughout the air
helium, a gas composed of identical atoms
rubbing alcohol, a liquid composed of chemically bonded
carbon, oxygen, and hydrogen atoms
sugar thoroughly dissolved in water
Submit
Answers
Answer:
1.heterogeneous mixture
2.element
3.compound
4.homogeneous mixture
Explanation:
The correct pairs are:
A cloud, which consist of small water droplets - Heterogeneous mixture
Distributed throughout the air
helium, a gas composed of identical atoms - Element
Rubbing alcohol, a liquid composed of chemically bonded - Compound
Carbon, Oxygen, and Hydrogen atoms
sugar thoroughly dissolved in water - Homogenous mixture.
In Heterogenous mixture, the composition of the mixture is not uniform. In Homogenous mixture, the composition is uniform throughout. Element is the combination of same atoms. Compound contains two or more elements.
Therefore, the correct pairs are,
A cloud, which consist of small water droplets - Heterogeneous mixture
Distributed throughout the air
helium, a gas composed of identical atoms - Element
Rubbing alcohol, a liquid composed of chemically bonded - Compound
Carbon, Oxygen, and Hydrogen atoms
sugar thoroughly dissolved in water - Homogenous mixture.
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Which phrase describes transmutation?(1 point)
the conversion of an atom of one element into a different element through nuclear changes
the conversion of energy to matter through chemical changes
the conversion of protons to neutrons through nuclear changes
the conversion of one substance to another through chemical changes
Help plss quick
thx
Answers
The phrase that describes transmutation is ; ( A ) The conversion of an atom of one element into different element through nuclear changes.
Transmutation is simply the change of an element to another element, transmutation occurs at the nucleus of the atom of an element and this process is initiated through nuclear reaction ( radioactive decay ).
Therefore the conversion of an atom of one element into different element through nuclear changes summarizes the term "transmutation".
Hence we can conclude that the phrase that describes transmutation is the conversion of an atom of one element into different element through nuclear changes.
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Answer:
Unit 4 Lesson 2:
Energy Release Quick Check
1. 138
2. The conversion of an atom of one element into a different element through nuclear changes.
3. A nuclear equation is balanced according to mass number. A chemical equation is balanced according to the total mass before and after the change.
4. 82
5. Some of the matter is converted to energy.
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How many valence electrons in this electron configuration 1S2 2S2 2P6 3S2
Answers
Answer:
Explanation:
Electron Configurations
A B
Fluorine 1s2 2s2 2p5
Neon 1s2 2s2 2p6
Sodium 1s2 2s2 2p6 3s1
Magnesium 1s2 2s2 2p6 3s2
an amount of nitrogen undergoes a physical change and increases its volume. What can be known about this physical change? The boiling point of the nitrogen increased. The mass of nitrogen increased. The color changed. The density changed.
Answers
Answer:
it was a chemical reaction
Explanation:
D
Explanation:
is the answer
How would the boiling point of water be affected if you doubled the amount of water?
Answers
Answer:
The boiling point wouldn´t be effected. The amount of time it would take to get it to that point would increase
Explanation:
identify the number of bonding pairs and lone pairs of electrons in water.
Answers
Answer:
2 bonding pairs and 2 lone pairs
Is CH4 a molecule, compound, or both?
Answers
This will always help you= A molecule is formed when two or more atoms join together chemically. And a compound is a molecule that contains at least two different elements.
For which applications would you choose a liquid over a gas or solid?
washing clothes
linking a brake pedal to the brake pads at the wheels of a car
deodorizing a room
carving a sculpture
dissolving sugar
painting a wall
making a gear for a machine
Answers
Washing clothes
linking a brake pedal to the brake pads at the wheels of a car
dissolving sugar
painting a wall
Explanation:
Please tell me the answer of this question, first person to answer will be marked brainlist
Answers
jeffrey is on his skateboard and starts skating down a ramp. ten seconds later he is traveling at 20.0m/s calculate the acceleration
Answers
what should be done if a spectrophotometer reports an absorbance that is too high?
Answers
Hope this help
What charge would each element obtain when it becomes an ion? a) aluminum e) lodine
b) lithium c) barium f) phosphorus g) sulfur d) bromine h) magnesium
Answers
Aluminum forms an ion of +3 while the bromine atom form an ion of -1.
What is an ion?An ion is an atom which has lost/gained one or more electrons. The ion will be positive if an electron is lost and will be negative when an electron is gained by the specie.
The ions formed by each of the species is;
Al = +3I = -1Li = +1Ba= +2P = -3S = -2Br = -1Mg = +2Learn more about ions:https://brainly.com/question/1782326
Which phrase best describes electronegativity?(1 point)
A.) the partial charge an element carries in a covalent or ionic bond
B.) the number of electrons an element shares in an ionic bond
C.) the number of electrons an element has
D.) the relative strength with which an element attracts electrons in a chemical bond
Answers
Answer:
ELECTRONEGATIVITY is the tendency of an atom in the molecule to attract the bonded pair of electrons .
Explanation:
it might help you!!!!!!
Answer:
the relative strength with which an element attracts electrons in a chemical bond
Explanation:
You will mostly find me in solid form at room temperature.
a
Metal
b
Nonmetal
Answers
Which statement best describes property’s of elements
Answers
Answer:
matter
Explanation:
some elements are solid
some are liquid and gas
which under one property
AgNo3.
Electrolysis happening in water.
5.6l of Oxigen goes in Anod how much Ag goes on Ch?
Answers
Hoàn thành dãy biến hóa sau :
S→SO2→SO3→H2SO4
Answers
Answer:
I don't know what your asking
ch4, o2 > co2, h20
1. Does this chemical reaction follow the law of conservation of matter?
2. How many atoms of hydrogen do you have in the reactants? How many atoms of hydrogen to you have in the product?
3. Give 1 reason why this chemical reaction/equation follows OR does not follow the law of conservation of matter?
Answers
1. No, it doesn't.
2. 4 Hydrogen atoms are on the reactants side and 2 hydrogen atoms on products side.
3. Because the mass of reactants is not equal to the mass of the products thus it doesn't follow the law of conservation of matter.
But on balancing the eqn,
CH4 + 2O2 > CO2 + 2H2O
The above eqn will follow the law of conservation of matter because the mass of reactants is equal to the mass of products.