Answer:
An acid is a substance that donates protons or accepts a pair of valence electrons to form a bond A base is a substance that can accept protons or donate a pair of valence electrons to form a bond.
Explanation:
Explanation:
An acid is a substance that donates protons (in the Brønsted-Lowry definition) or accepts a pair of valence electrons to form a bond (in the Lewis definition). A base is a substance that can accept protons or donate a pair of valence electrons to form a bond...........
Does the motion of the moon affects how we see it from Earth? *
An atom of an unknown element contains 17 protons and 19 neutrons. The total number of electrons present in a neutral atom of this element is
Answer:
This isotope of fluorine has 9 protons, 9 electrons and 10 neutrons.
Explanation:
The atomic number is the number of protons ( p + ) . In a neutral atom, the number of electrons ( e − ) equals the number of protons. Mass number is the sum of the protons and neutrons ( n 0 ) of a particular isotope. If you have mass number and atomic number, subtract the atomic number from the mass number to get the number of neutrons. ( Mass number ) − ( atomic number ) = number of neutrons .
There are:
9 protons
9 electrons
10 neutrons
Fluorine is the element in question, as its atomic number is 9 . You would name this particular isotope using the mass number. It would be called fluorine-19.
The nuclear or isotopic notation would be 19 9 F
137g of Ba + ______ g oh I --> 391g of BaI2
Answer:
Explanation:
Is it worth it? Joy
HELP PLEASEEE!!! THANK YOUU
Answer:
D: Condensation
Explanation:
Hope This Helps! :)
PLS HELPPP!!!!!!!!!!!
Answer:
c
Explanation:
ionic bonds; cations (metals) GIVE electrons to anions (nonmetals)
Why do all measurements have a degree of uncertainty?
Answer:
All measurements have a degree of uncertaintyregardless of precision and accuracy. This is caused by two factors, the limitation of the measuring instrument (systematic error) and the skill of the experimenter making the measurements (random error).
If a plant has a total of 17g of carbon dioxide and water reacting in photosynthesis, then how much glucose and oxygen will the plant produce?
A. 8.5g
B. 34g
C. 17g
(Take your time)
Answer:
Basically it would be 8.5g. Not total sure.
Explanation:
If its right plz give brainlest.
Answer:
A. 8.5g
Explanation:
Have a great day!
What product of an acid-base reaction is an ionic compound?
A. A salt
B. Water
C. A metal
O D. A gas
SUBMIT
Answer:
Salt
Explanation:
Answer: A gas
Explanation: Contrary to popular belief, it is not salt. Salt can be separated from water.
How many moles of nitrogen gas will occupy a volume of .347 L at 6680 mmHg and 27°C?
Answer:0.124 mol- I think not completely positive on it
Explanation:6680⋅mm⋅Hg is not a realistic measurement of pressure....
I assume you mean 6680⋅mm⋅Hg/760⋅mm⋅Hg⋅atm^-1 = 8.79⋅atm.
And we use the Ideal Gas Equation:
n=PV/RT=8.79⋅atm×0.347⋅L/0.0821⋅L⋅atm⋅K−1⋅mol−1×300⋅K=0.124⋅mol
List 3 countries known to have poor water quality.
Answer
Ethiopia, Niger, Chad
Exlination-
What is the poisonous gas released by incomplete combustion(the name not formula)
Answer:
CARBON MONOXIDE
Explanation:
Carbon monoxide is produced by incomplete combustion of hydrocarbon fuels. Poisoning by carbon monoxide is caused by operating improperly vented space heaters or furnaces in poorly ventilated buildings.
When a wavelength (increases/decreases) the frequency (increases/decreases) and the energy (increases/decreases)
Answer:
As a wavelength increases in size, its frequency and energy (E) decrease. From these equations you may realize that as the frequency increases, the wavelength gets shorter. As the frequency decreases, the wavelength gets longer. There are two basic types of waves: mechanical and electromagnetic
Explanation:
hope it helps
plz mark it as brainlist
Find the mass of 5.82 mol of MgCl2. Round to the nearest tenth.
Answer:
554.13 grams
Explanation:
The mass of 5.82 mol of MgCl2 is 552.9g. Details about how to calculate mass can be found below.
How to calculate mass?The mass of a substance can be calculated by multiplying the number of moles of the substance by its molar mass.
According to this question, there are 5.82 moles of MgCl2. The mass is calculated thus:
molar mass of MgCl2 = 24 + 35.5(2) = 95g/mol
mass of MgCl2 = 95g/mol × 5.82 moles
mass of MgCl2 = 552.9g
Therefore, the mass of 5.82 mol of MgCl2 is 552.9g.
Learn more about mass at: https://brainly.com/question/19694949
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According to the chart below, which element makes up a large portion of the
atmosphere and living matter, but NOT the ocean? (6.58, 6.2E)
Earth Component Elemental Composition
Earth's Crust
O, SI, AI, Fe
Atmosphere
NO
#ocean
H, O, CI, Na
Organic Material
H, O, N, C
A. Oxygen (0)
B. Hydrogen (H)
c. Nitrogen (N)
D. Sodium (Na)
Answer:
B. Hydrogen (H)
c. Nitrogen (N)
D. Sodium (Na)
Explanation:
Answer:
This question is all sorts of messed up but i'm pretty sure I figured it out and its
A
Explanation:
__________________ to represent dominant alleles and used __________________ ___________________ to represent recessive alleles.
Answer:
Explanation:
Mendel used letters to represent dominant and recessive factors. Likewise, geneticists now use letters to represent alleles. Capital letters refer to dominant alleles, and lowercase letters refer to recessive alleles.
How many atoms are in 5.76 moles of aluminum?
Answer:The number of atoms in 2.0 mole Al is A. 2.0 Al atoms. B. 3.0 x 1023 Al atoms.
Secondly, is aluminum an atom or molecule? Aluminum is the second element in the thirteenth column of the periodic table. It is classified as a post-transition metal and a "poor metal". Aluminum atoms contain 13 electrons and 13 protons. There are 3 valence electrons in the outer shell.
Describe how the functions of the digestive and circulatory system are connected.
Answer:
(1) Digestive System gets nutrients (good) from food and hands it over to the blood and Circulatory System then carries those nutrients where they need to go. (2) Filters out waste from food and pushes it through intestines and out the body (and you know how and where it gets out).
How many moles are in 3.45g of KCI ?
0.0463 mol KCl
General Formulas and Concepts:Math
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightChemistry
Atomic Structure
Reading a Periodic TableUsing Dimensional AnalysisExplanation:Step 1: Define
3.45 g KCl
Step 2: Identify Conversions
Molar Mass of K - 39.10 g/mol
Molar Mass of Cl - 35.45 g/mol
Molar Mass of KCl - 39.10 + 35.45 = 74.55 g/mol
Step 3: Convert
Set up: [tex]\displaystyle 3.45 \ g \ KCl(\frac{1 \ mol \ KCl}{74.55 \ g \ KCl})[/tex]Multiply/Divide: [tex]\displaystyle 0.046278 \ mol \ KCl[/tex]Step 4: Check
Follow sig fig rules and round. We are given 3 sig figs.
0.046278 mol KCl ≈ 0.0463 mol KCl
Write a question you have about water
Answer:
How many gallons of water are on earth?
Why does salt water make you sticky and burn our eyes so bad?
Explanation:
These are just a couple questions I came up with just now
I hope that this helps
student plans to isolate chlorophyll, mix it in a solution of carbon dioxide and water, and then shine light on the mixture. Do you predict glucose will be produced inside the mixture
Answer:
No
Explanation:
In order for glucose to be produced inside the mixture, photosynthesis has to take place. The photosynthetic process requires a series of steps within an organelle called the chloroplast. The chloroplast contains the chlorophyll and other enzymes that are necessary for photosynthesis.
Once the chlorophyll is isolated, it becomes separated from the enzymes necessary for the completion of photosynthesis, and the process is truncated. When light is shined on the mixture, the majority would instead be lost as heat while some cause the chlorophyll molecules to glow.
Identify the type of the following chemical reaction.
Answer:
Hydrolysis reaction
Explanation:
what is PH??
i will mark as brainlest for best answer
Explanation:
pH is a scale used to specify the acidity or basicity of an aqueous solution. Acidic solutions are measured to have lower pH values than basic or alkaline solutions. The pH scale is logarithmic and inversely indicates the concentration of hydrogen ions in the solution.
How many moles of sucrose
are in 5.25x1029 sucrose
molecules?
Answer:
872093.02moles
Explanation:
Given parameters:
Number of atoms of Sucrose = 5.25 x 10²⁹atoms
Unknown:
Number of moles = ?
Solution:
To solve this problem, we must understand that a mole of any substance contains the Avogadro's number of particles.
6.02 x 10²³ atoms makes up 1 mole of an atom
5.25 x 10²⁹ atoms will contain = [tex]\frac{5.25 x 10^{29} }{6.02 x 10^{23} }[/tex] = 872093.02moles
If 250J of energy from the Sun hits the
atmosphere at a certain place, but only 128J
makes it to the surface of the Earth, how much
energy is reflected by the atmosphere?
Chemical Equations and Reactions WS
Answer:
1,1,1
decomposition reaction
Explanation:
The reaction equation is given as:
_Ca(OH)₂ → _CaO + _H₂O
This reaction is a decomposition reaction in which a single reactant breaks down to give two or more products.
To balance the equation, we assign variables a, b and c, then we use a mathematical approach to solve the problem;
aCa(OH)₂ → bCaO + cH₂O
Conserving Ca : a = b
O: 2a = b + c
H: 2a = 2c
let a = 1, b = 1 , c = 1
1. How many moles of magnesium is 3.01 x 10^23 atoms of magnesium?
Answer:
0.5 molesExplanation:
To find the number of moles in a substance given it's number of entities we use the formula
[tex]n = \frac{N}{L} \\[/tex]
where n is the number of moles
N is the number of entities
L is the Avogadro's constant which is
6.02 × 10²³ entities
From the question we have
[tex]n = \frac{3.01 \times {10}^{23} }{6.02 \times {10}^{23} } = \frac{3.01}{6.02} = 0.5 \\ [/tex]
We have the final answer as
0.5 molesHope this helps you
What units are used to measure mass and weight?
Answer: Milligrams ,grams ,kilograms ,quintals, tons
Explanation: Hope this helps
Convert the following number from scientific notation to standard notation:
7.80 x 105
Answer:
Call of balls massive sack
Explanation:
Yoooo
How many moles are in 20g of potassium (K)?
Explanation:
Hi for this one u just need to remember and use the equation.
[tex]moles = \frac{mass}{mr} [/tex]
then u find mr of potassium which is 39.1.
then u do
[tex] \frac{20}{39.1} [/tex]
you get the answer as 0.5115 write ur answer to 3 significant figures which will be 0.512 moles .
hope this helps :)
When there are 0.0814 moles of hockey pucks how many hockey pucks are there?
Answer:
4.9 x 10²²hockey pucks
Explanation:
Given parameters:
Number of moles of hockey = 0.0814moles
Unknown:
Number of pucks there = ?
Solution:
A mole of a substance is made up of Avogadro's number of particles.
Therefore;
1 mole of hockey pucks will contain 6.02 x 10²³ hockey pucks
0.0814 mole of hockey pucks will contain :
0.0814 x 6.02 x 10²³ = 4.9 x 10²²hockey pucks