Answers
Answer:
I think that the answers A, not 100% sure tho
Explanation:
Because the problem says "highly radioactive" chemicals and gamma rays are highly radioactive chemicals, and gamma rays are very penetrating to the human body
Related Questions
Help plz 11 points i need help plz give me TWO not one TWO
!!
Answers
What is another name for acetic acid? *
1. lemons, limes or oranges
2 .vinegar
3. vitamin C
Answers
how is the strength of an acid affected by the number of hydrogen ions it contains
Answers
More the no. of hydrogen ions more is the solution acidic.
pH means the power of hydrogen that determines the concentration of hydrogen ions or the level of acidiy or basicity of a solution.
so more the hydrogen ions more will be the Power of Hydrogen (pH) and thus more wil be the acidity.
How many moles are present in 2.126 g of H2O2 ?
Answers
Answer:
molecular weight of H2O2 or grams. This compound is also known as Hydrogen Peroxide. The SI base unit for amount of substance is the mole. 1 mole is equal to 1 moles H2O2, or 34.01468 grams.
1 grams H2O2 is equal to 0.029399071224542 mole.
1 grams H2O2 to mol = 0.0294 mol
10 grams H2O2 to mol = 0.29399 mol
20 grams H2O2 to mol = 0.58798 mol
30 grams H2O2 to mol = 0.88197 mol
40 grams H2O2 to mol = 1.17596 mol
50 grams H2O2 to mol = 1.46995 mol
100 grams H2O2 to mol = 2.93991 mol
200 grams H2O2 to mol = 5.87981 mol
There are 0.0625mol in 2.126 g of H2O2.
HOW TO CALCULATE MOLES:
The number of moles of a substance can be calculated by dividing the mass of the substance by its molar mass. That is;no. of moles (mol) = mass (g) ÷ molar mass (g/mol)According to this question, 2.126 g of H2O2 were given. The number of moles of H2O2 can be calculated as follows:Molar mass of H2O2 = 1(2) + 16(2)= 2 + 32
= 34g/mol
no. of moles = 2.126g ÷ 34g/molno. of moles = 0.0625molTherefore, there are 0.0625mol in 2.126 g of H2O2..Learn more at: https://brainly.com/question/21085277?referrer=searchResults
I am a nonmetal.I am in the Oxygen family and in row 3.I have 6 valence electrons.I am yellow and have a stinky smell.Who am i
Answers
Answer:
sulfur
Explanation:
In oxygen family sulfur has yellow color and also having stinky smell. Thus given statements are about sulfur.
It is present in oxygen family.
It has six valance electrons.
Its atomic number is 16.
Its atomic weight is 32 amu.
The electronic configuration of sulfur is given below,
S₁₆ = 1s² 2s² 2p⁶ 3s² 3p⁴
We can see the valance shell is third shell and it have six electrons thus sulfur have six valance electrons. (3s² 3p⁴ )
Sulfur is used in vulcanisation process.
It is used in bleach and also as a preservative for many food.
it is used to making gun powder.
what is stastical thermodaynamics deal?
Answers
Explanation:
Statistical thermodynamics is a theory that uses molecular properties to predict the behavior of macroscopic quantities of compounds. ... From these energy-level data, a temperature-dependent quantity called the partition function can be calculated.
Answer:
the stastical thermodaynamics deal is essentially a theory that you can use the molecules and their properties in order to predict how the molecule will behave in a macroscopic quantities of compounds. Using this, you can also tell a temperature-dependent quantity called the partition function.
(I also didn't copy and paste this, so it's safe for you to use)
May I have brainliest please? :)
sodium hydroxide + sulfuric acid
Answers
Answer:
NaOH + H2SO4 ‐‐> 2H2O + Na2SO4;
Explanation:
NaOH+H2SO4= Na2SO4+H2O
Will give brainliest
Answers
Answer:
C
Explanation:
The concept behind, is mole ratio of Al:FeO
For the following reaction, calculate how many moles of each product are formed when 4.05 g of water is used.
2 H2O → 2 H2 +02
Answers
Answer:
A. 0.225 mole of H₂
B. 0.113 mole of O₂.
Explanation:
We'll begin by calculating the number of mole in 4.05 g of water (H₂O). This can be obtained as follow:
Mass of H₂O = 4.05 g
Molar mass of H₂O = (2×1) + 16 = 2 + 16 = 18 g/mol
Mole of H₂O =?
Mole = mass /Molar mass
Mole of H₂O = 4.05 / 18
Mole of H₂O = 0.225 mole
Next, the balanced equation.
2H₂O —> 2H₂ + O₂
From the balanced equation above,
2 moles of H₂O produced 2 moles of H₂ and 1 mole of O₂.
A. Determination of the number of mole hydrogen produced.
From the balanced equation above,
2 moles of H₂O produced 2 moles of H₂.
Therefore, 0.225 mole of H₂O will also produce 0.225 mole of H₂.
B. Determination of the number of mole oxygen produced.
From the balanced equation above,
2 moles of H₂O produced 1 mole of O₂.
Therefore, 0.225 mole of H₂O will produce = (0.225 × 1)/2 = 0.113 mole of O₂.
Thus, 0.113 mole of O₂ is produced.
What movement causes a year and how long is it
Answers
I hope it is helpful for ........
Please mark me as brainliest .......Answer:
Revolution of the earth around the sun in its own orbit. A complete revolution of the earth is a year equal to 365 days
Explanation:
A certain first-row transition metal ion forms many different colored solutions. When four coordination compounds of this metal, each having the same coordination number, are dissolved in water, the colors of the solutions are red, yellow, green, and blue. Further experiments reveal that two of the complex ions are paramagnetic with four unpaired electrons and the other two are diamagnetic. What can be deduced from this information about the four coordination compounds
Answers
Answer:
See explanation
Explanation:
From the analysis we have in the question, we must look towards a first row transition metal ion having a d^6 configuration because it yields a paramagnetic complex having four unpaired electrons and a diamagnetic complex having no unpaired electrons.
We have two possible candidates in mind, Fe^2+ and Co^3+. However, Fe^2+ does not form as many coloured complexes as stated in the question so we have to eliminate that option.
We are now left with only Co^3+. Various ligands are going to cause these various colours of Co^3+ to appear in solution.
Hence, we can deduce from all these that the nature of ligands determines the colour of the complex . Don't forget that the colour of a complex arises from crystal field splitting.
6b
Which of the following is a starting compound during
cellular respiration?
Answers
Answer: Oxygen and glucose.
Explanation:
Oxygen and glucose are both reactants in the process of cellular respiration. The main product of cellular respiration is ATP; waste products include carbon dioxide and water.Jun 1, 2020
Plz help
Plz and thank u
Answers
What does the chemical formula C3H6O2 tell about a molecule of the compound it represents?
It is made up of 3 atoms of 11 different elements.
It is made up of 11 atoms joined in a straight line.
It is made up of 11 total atoms of 3 different elements.
It is made up of 1 atom composed of 3 different elements.
Answers
Answer:
it number 3 it's made up of total 11 atoms of 3 different elements .
Answer:
c
Explanation:
Please help this affects my grade a lot and im confused
Double Replacement/Combustion I need to find the product of each one
zinc oxide + Cobalt(III) nitrite
Calcium hydroxide + phosphoric acid
Copper(I) dichromate + Iron(III) arsenate
Hydrochloric acid + aluminum hydroxide
Answers
1 ) Cobalt(II) nitrate react with nitrate zinc(II) to produce cobalt(III)-zinc oxide, nitrogen dioxide and oxygen
2Co(NO3)2 + Zn(NO3)2 → Co2ZnO4 + 6NO2 + O2
2) Calcium hydroxide react with phosphoric acid to produce calcium, hydrogen phosphate and water
Ca(OH)2 + H3PO4 → CaHPO4 + 2H2O
3) Copper(II) dichromate will react with Iron(III) arsenate to form Copper(II) Arsenate and Iron(III) dichromate
3Cr2CuO7 + 2AsFeO4 → Cu3(AsO4)2 + Fe2(Cr2O7)3
Reaction Type : Double Displacement
4) aluminium hydroxide and hydrochloric acid react to form aluminium chloride and water
Al(OH)3 + 3HCl → AlCl3 + 3H2O
what is the Curie used to measure
Answers
Answer:
it's used to measure intensity of radioactivity in a sample of material
Complete the table below by deciding whether a precipitate forms when aqueous solutions A and B are mixed. If a precipitate will form, enter its empirical formula in the last column.
solution A solution B Does a precipitate form when A and B are mixed? empirical formula of precipitate
zinc nitrate iron(II) iodide
yes
no
potassium bromide lead(II) nitrate
yes
no
ammonium bromide sodium hydroxide
yes
no
Answers
Answer:
1) No, 2) Yes, 3) Yes
Explanation:
Refer to solubility rules to understand if a precipitate occurs between a mix of solutions.
Two solutions form a precipitate if they react to yield an insoluble product.
Let us now consider each of the reacting species one after the other.
In the first case;
Zn(NO3)2(aq) + FeI2(aq) ----> ZnI2(aq) + Fe(NO3)2(aq)
The two products of the reaction are soluble so no precipitate is formed.
In the second case;
2KBr(aq) + Pb(NO3)2(aq) ------> 2KNO3(aq) + PbBr2(s)
An insoluble product PbBr2 is formed hence a precipitate is formed.
In the third case;
NH4Br(aq) + NaOH(aq) -------> NH4OH(aq) + NaBr(aq)
No insoluble product is formed so the there is no precipitate.
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fill in the blank please
amino acids as _____ are to words
Answers
Answer:
Sentences are where there is a beginning and an end of a section of a paragraph. Letters are individual parts of sentences.
The answer that would make the MOST sense would be SENTENCES
Pieces of DNA that pass genetic traits from parent to offspring
A. Phenotype
B. Gene
D. Allele
Answers
Answer:
gene
Explanation:
PLEASE HELP
is this a chemical or physical change???
Answers
Answer:
Chemical, cause physical are changes affecting the form of a chemical substance, but not its chemical composition. This doesn't affect the substance but the composition.
Explanation:
step by step explanation:
what is the molecular formula of methanoic acid
Answers
Answer:
CH₂O₂
Mark me as brainliest plz.
Explanation:
CH2o2.is right ans hi I'm anmol kulkar from India
which event would most likely lead to a thunderstorm HELP GIVING BRAINLIEST
Answers
Answer:
A
Explanation:
i got right
All of these are types of slime except
A cornstarch slime.
B algal slime.
C slime molds.
D bacterial slime.
Answers
Answer:
imma say slime molds
Explanation:
if I'm wrong please tell me
Answer:
algal slime i think
Explanation:
all of the following are properties of ionic compounds except:
A. Ionic compounds have low melting points,
B. Ionic compounds have high boiling points
C. Ionic compounds conduct electricity when dissolved in water
D. Ionic compounds are solid at room temperature
Answers
Answer:
A
Explanation:
They have generally high melting point compared to covalent compounds because they are formed by electrostatic force of attraction between two opposite charge is not easy to melt them in low melting point.
Ionic compounds have high melting and boiling points. Therefore, option A is not a property of ionic compound. Hence, option A is the correct answer.
Ionic compounds are neutral compounds. Ionic compounds are formed from cations and anions. Positively charged ion (cation) and negatively charged ion (anion) are held together with strong ionic bond. Some main properties of ionic compounds are,
High melting point and boiling pointsHave definite size and shapeConduct electricity in molten statesoluble in water and not soluble in organic solventsThus, we can conclude ionic compounds have high melting and boiling points. Hence, option A is the correct answer.
Learn more about ionic compounds here:
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An amusement park charges $27 for adult tickets (a) and $24 for children's tickets (c). Last Friday the amusement park sold 272 tickets and collected $7,137. Which of the following systems of equations is a correct representation of this data?
Answers
Answer:
a+c=272
27a+24c=7,137
Explanation: Hope this helps!!!
Which term best describes the molecule shown below?
Answers
Answer:
Unsaturated alkene
Explanation:
other answer was wrong
There are two types of chemical compound one is covalent compound and other is ionic compound, covalent compound formed by sharing of electron and ionic compound formed by complete transfer of electron. Therefore, the correct option is option D.
What is chemical Compound?Chemical Compound is a combination of molecule, Molecule forms by combination of element and element forms by combination of atoms in fixed proportion.
An ionic compound is a metal and nonmetal combined compound. Ionic compound are very hard. They have high melting and boiling point because of strong ion bond.
There are two types of compound in organic chemistry, one is saturated and other is unsaturated. Saturated is the one which possess all single bond and unsaturated is the one which possess either double or triple bond. The given chemical compound is unsaturated alkene.
Therefore, the correct option is option D.
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which particles are transferred or shared when atoms form bonds?
Answers
Answer:
The electrons are shared when atoms form bonds.
An angle of refraction is the angle between the refracted ray and the
incident ray.
normal.
medium.
boundary.
Answers
Answer:
Normal
Explanation:
with the boundary, is a glancing angle
with the incident ray, is the field of view
Answer:
B. normal
Explanation:
anyways i passed my chemistry final yall. yupp
Answers
Explanation:
CONGRATULATIONS!!!!!
Answer:
chemistary more lliek dumastry ahaha
Explanation:
According to the collision theory, which is required for a high number of effective collisions? a very low amount of force from colliding molecules a very low amount of kinetic energy from colliding molecules molecular collisions that have very specific orientations molecular collisions with energy to overcome activation energy
Answers
Answer:
the answer is D
Explanation:
i answered c and got it wrong on edg... i hope this helps :)
According to the collision theory, molecular collisions that have very specific orientations are required for a high number of effective collisions.
What is collision theory?Collision theory is used to predict the rates of chemical reactions, particularly for gases.
Based on the collision theory, a high frequency of effective collision is dependent on the molecular collisions that have very specific orientations.
The collision theory suggests that for reactions to occur, there must collision between reacting particles.
The number of collision is dependent on the number of collision per unit time as well as fractions of effective collision.
To attain effective collision, colliding particles must be properly oriented to give the desired product.
Hence, option C is correct.
Learn more about collision theory here:
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