Answer:
urm is that an answer lol
What is the tendency for an atom to attract electrons when chemically
bonded to another atom?
Answer:
Electronegativity
Explanation:
Answer:
Electronegativity
Explanation:
Edge 2021
If you have 10.0 g of hydrogen and 5.0 g of oxygen, what mass of the excess reagent remains after the completion of the reaction?
mass Hydrogen=9.376 g
Further explanationReaction
2H₂+O₂⇒2H₂O
mass H₂ = 10 g
mol H₂(MW=2 g/mol) :
10 : 2 = 5
mass O₂=5 g
mol O₂(MW=32 g/mol) :
5 : 32 = 0.156
O₂ limiting reactant
mol H₂: mol O₂ = 2: 1, so mol H₂ :
2 x 0.156 = 0.312
mol H₂ :
5 - 0.132 =4.688
mass of H₂ :
4.688 x 2 =9.376 g
Measurements of water quality were taken a river downstream from an abandoned chemical dumpsite. Concentrations of a certain chemical were were obtained from 9 measurements taken at the surface of the water, 9 measurements taken at mid-depth of the water. And 9 measurements taken at the bottom of the water. What type of study was conducted, and what is the response variable of the study?
(a) An experiment was conducted, response variable is the connection of the chemical
(b) An experiment was conducted,response variable is the depth of the water
(c) A census was conducted, and the response variables is the depth of the water
(d) An observational study was conducted, and the response variable is the depth of the water
Answer:
(a) An experiment was conducted, response variable is the concentrations of the chemical
Explanation:
According to Oxford dictionary; an experiment is; "a scientific procedure undertaken to make a discovery, test a hypothesis, or demonstrate a known fact."
The aim of the entire study is to discover the concentration of a certain chemical at various depths of the river. This means that the entire procedure was undertaken for the purpose of discovery. Hence it is an experiment.
The independent variable here is the depth of the river while the response variable is the concentration of the chemical of interest at each depth.
A responding variable changes as changes are made in the independent variable. The variable that is manipulated in an experiment is the independent variable.
Compared to 3.011 × 10²³ atoms of Na, 1.0 mole of Carbon
A. has the same number of atoms
B. has twice as many atoms
C. not enough information
D. has half as many atoms
Compared to 1.0 mole of H₂S (molar mass 334 g/mol), 1.0 mole of NH₃ (molar mass 17g/mol)
A. has half the number of molecules
B. not enough information
C. has twice the number of molecules
D. has the same number of molecules
Thank you!
1. B. has twice as many atoms
2. D. has the same number of molecules
Further explanationThe mole is the number of particles(molecules, atoms, ions) contained in a substance
1 mol = 6.02.10²³ particles
Can be formulated
N=n x No
N = number of particles
n = mol
No = Avogadro's = 6.02.10²³
1.
3.011 × 10²³ atoms of Na, 1.0 mole of Carbon
1 mole Carbon = 6.02.10²³ atoms, so 1 mole of Carbon B. has twice as many atoms of Na
2.
1.0 mole of H₂S (molar mass 334 g/mol), 1.0 mole of NH₃ (molar mass 17g/mol)
Both have the same number of moles, so they have the same number of molecules
1.0 mole of NH₃ D. has the same number of molecules as 1.0 mole of H₂S
What is not found on the inside of the eye? optic nerve, cornea, tear ducts, or iris?
Which of the following statements is true about nuclear fusion? (4 points)
It occurs in the sun.
A heavy atom is split.
It can be controlled easily.
An electron is lost by the atom.
Let's understand Nuclear fusion first:
Nuclear fusion is a reaction in which two or more atomic nuclei are combined to form one or more different atomic nuclei and subatomic particles.In the core of the Sun, hydrogen is being converted into helium. This is called nuclear fusion. It takes four hydrogen atoms to fuse into each helium atom. During the process some of the mass is converted into energy.Nuclear fusion reactions are difficult to control.Fusion does not produce nuclear waste, only the core of the reactor remains radioactive and only for 100 years.Learn more:
brainly.com/question/25909835
What mass of Sodium Iodide (NaI) will react with 7.82 grams of Chlorine (Cl2)? 2NaI + Cl2 -------------> 2NaCl + I2
Answer:
16.49g
Explanation:
Given parameters:
Mass of Chlorine gas = 7.82g
Unknown:
Mass of NaI = ?
Solution:
The reaction equation is given as:
2NaI + Cl₂ → 2NaCl + I₂
To solve this problem, find the number of moles of the known specie first;
Number of moles of Cl₂ = [tex]\frac{mass}{molar mass}[/tex]
Molar mass of Cl₂ = 2(35.5) = 71g/mol
Number of moles = [tex]\frac{7.82}{71}[/tex] = 0.11mole
From the balanced reaction equation;
2 mole of Cl₂ will react with 2 mole of NaI
0.11 mole of Cl₂ will also react with 0.11mole of NaI
Mass of NaI = number of moles x molar mass
Molar mass of NaI = 23 + 126.9 = 149.9g/mol
Mass of NaI = 0.11 x 149.9 = 16.49g
What type of atom is hydrogen
Answer:
Protium
Explanation:
The hydrogen atom is the simplest of all atoms: it consists of a single proton and a single electron. In addition to the most common form of the hydrogen atom that is called protium, two other isotopes of hydrogen exist deuterium and tritium.
Answer: Hydrogen is a atom of the chemical element hydrogen.
Explanation:
Please help do in 5 mins This system that breaks down food and absorbs food is called
Answer:
I think its digestive
Explanation:
............
PLS HELP ASAP I DONT HAVE TIME ONLY 5 MINUTES AND IM DOING OTHER THINGS HELPP
Answer:
The reactants of photosynthesis are Carbon Dioxide and water. The products are Glucose (or starch/sugar) and Oxygen. The autotroph uses light energy from the sun in order to complete this process. In the formula, the arrow is the light energy.
Explanation:
Answer:
I've inserted an image.
Explanation:
Hope this helps!
(:
How many double bonds are in CO2?
O 1
o 2
O 3
Explanation:
In CO₂ there's 2 double bonds.
Structure:
O=C=O (linear) (180°)
Therefore,
Option C is correct✔
In pure metals, the atoms are arranged in orderly _______
and _______
Answer:
Rows and columns.
Explanation:
Each atom gives up some of its electrons to create a kind of sea of these randomly moving charged particles. It's these free-flowing electrons that make metals conductive.
The standard unit for measuring volume is the _____.
milliliter
liter
deciliter
cubic centimeter
the chef is making salad dressing with vinegar olive oil and pepper, but the ingredients are not mixing together.
If a seed grows well in a very salty environment then that seed has a high salt tolerance.
O True
O False
what should we use in soap making process:-
a) potassium hydroxide
b) sodium hydroxide (lye)
Explain why it should be used
Answer:
Well either of them can be used but I would say B). Sodium hydroxide
Explanation:
Potassium Hydroxide is a type of lye specifically used to make liquid soap. It is also known as potash, lye or even KOH. This is the chemical that induces saponification of the fats and oils to create liquid soap. ... Our lye calculator makes this easy and allows you to select liquid soap as an option.
Sodium hydroxide, with the formula NaOH, is usually used in products as a pH adjuster. It's also used in soap-making to turn fats and oils into soap. You can find sodium hydroxide (also called caustic soda or lye) in its pure form in the cleaning aisle, since it's also really handy for clearing up clogged drains.
Hope this helps! Please consider marking brainliest! I hope you have an amazing day. Always remember, your smart and you got this! -Alycia :)
why is tate langdon from ahs so hot
Answer:
hes actually kinda hot tho
Explanation:
Answer:
he's a literal daddy
Explanation:
his parents
Name two-fluid technologies' that make
use of air.
Explain the structure of XeO3
The central Xe atom in XeO3 has three bonding domains and one lone pair of electrons. Hence, the electron geometry is tetrahedral and molecular geometry is pyramidal.
PLS HELP ANYONE PLS BEGGING AT THIS POINT
What is the mass of 12 moles of tin?
Select one:
O a.118.719
O b. 1409
O c.0.109
O d. 1, 400g
Answer: 12 moles of tin is 1,400 or D
It might also be C
Explanation:one mole of tin is 118.71 so that times 12 is equal 1,424 . Round 1,424 and it is 1,400
Gene therapy has been used to treat and cure cystic fibrosis. Cystic fibrosis is caused by a
in a single gene.
Answer:
I believe it is mutation.
Explanation:
Two students on opposite sides of a box apply forces to the box. What must be true if the
box does not accelerate?
Answer:
the students are pushing with equal force
Explanation:
POINTS AND BRAINIEST ANSWER!!!!
How many valence electrons does oxygen have after bonding?
How many valence electrons does hydrogen have after bonding?
Answer:
hydrgen = i think it is 4
oxygen = i think it is 3
Explanation:
Why are anions negative?
Answer:
An anion has more electrons than protons, consequently giving it a net negative charge .
hope it helps!
A gas sample contained in a cylinder equipped with a moveable piston occupied 300.0 mL at a pressure of 2.00 atm. What would be the final pressure if the volume were increased to 500.0 mL at constant temperature?
Answer:
Explanation
hope this helps!
Alec saw footage of a landslide on the news. He saw rocks falling from the side of a mountain, with some of them smashing into each other and breaking apart. Alec witnessed
A. erosion and weathering.
B. erosion and compacting.
C. weathering and compacting.
D. weathering and sedimentation.
Answer:
a
Explanation:
How many grams of water (H2O) are there in 2.60 mol of the compound?
Answer:
46.839728 grams of water
Explanation:
1 mole is equal to 1 moles H2O, or 18.01528 grams
18.01528 times 2.6 = 46.839728
There are 46.839728 grams h20 in 2.60 mol of the compound
Why do scientists continue to investigate certain topics like the atom?
Which of the following gives a plant the carbon it needs to make glucose?
Water
Light Energy
Carbon Dioxide
Ouction 2
Answer:
light babsbabsbab
Explanation:
abbdbabsbabba
What reacts with carbonates to produce carbon dioxide ?
A. Litmus paper
B. Bases
C. Acids
D. Metals
Answer:
c
Explanation:
hope it helps :)
Answer:
C. Acids
Explanation:
Trust me.