Answer:
Air masses are also identified based on whether they form over land or over water. Maritime air masses form over water and are humid. Continental air masses form over land and are dry. ... One that forms over the Indian Ocean is called a maritime tropical air mass and is warm and humid
The type of air mass that forms in an area is determined by the location and nature of the water and land.
What is meant by Air mass?Air mass may be characterized as a huge volume of air that is present in the atmosphere which possesses a uniform temperature and moisture. This attribute is generally classified on the basis of latitude and continental or maritime source regions.
For example, Maritime air masses construct over water and are significantly humid. While continental air masses construct over land and are significantly dry. That is why air masses are characterized by the temperature and humidity of the given region.
Therefore, the type of air mass that forms in an area is determined by the location and nature of the water and land along with the temperature and humidity of the given region.
To learn more about Air masses, refer to the link:
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1) What is the mass of 6.2 mol of K2CO3?
Answer:
[tex]\boxed {\boxed {\sf 856.8648 \ grams \ of \ K_2CO_3}}[/tex]
Explanation:
To convert from moles to grams, we must find the molar mass.
1. Molar Mass
First, identify the elements in the compound. K₂CO₃ It has potassium, carbon, and oxygen. Find these elements and their masses on the Periodic Table.
K: 39.098 g/mol C: 12.011 g/mol O: 15.999 g/molNote the subscript of 2 after K and 3 after O. We must multiply oxygen's molar mass by 2, then oxygen's by 3, and add carbon.
2(39.098 g/mol) + 3(15.999 g/mol) + 12.011 g/mol= 138.204 g/mol2. Convert Moles to Grams
Use the molar mass as a fraction.
[tex]\frac {138.204 \ g \ K_2CO_3}{1 \ mol \ K_23CO_3}[/tex]
Multiply by the given number of moles: 6.2
[tex]6.2 \ mol \ K_2CO_3 *\frac {138.204 \ g \ K_2CO_3}{1 \ mol \ K_23CO_3}[/tex]
[tex]6.2 *\frac {138.204 \ g \ K_2CO_3}{1 }[/tex]
[tex]6.2 * {138.204 \ g \ K_2CO_3}[/tex]
[tex]856.8648 \ g \ K_2CO_3[/tex]
There are 856.8648 grams of potassium carbonate in 6.2 moles.
If today is October 7th and we observe a waxing gibbous, on what date will we observe the next waning crescent?
Answer:
14 days.
Explanation:
If today were October 7 and we observed a waxing gibbous moon, that is, a moon with an illumination greater than a first quarter but less than a full moon, we would have to wait 14 days to see a waning crescent moon, which would be a moon with a visibility less than the last quarter but greater than a new moon.
If a mixture contains 75% of one compound and 25% of its enantiomer, what is the e.e. of the mixture
Answer: The enantiomeric excess ee is 50%
Explanation:
Given that;
compound A = 75%, B = 25%
ee = ?
so
ee = [( A - B) / ( A + B)] × 100
= [( 75 - 25) / ( 75 + 25)] × 100
= [50 / 100] × 100
= 0.5 × 100
= 50%
Therefore enantiomeric excess ee is 50%
HELP I need these 2 questions answered
Answer:
1=a 2=d i think
Explanation:
What are the two types of alleles? A: Dominant and recessive B: genotype and phenotype C: Gene and chromosome or D: Gene and DNA
Answer:
dominant and recessive
Explanation:
The number of light waves that occur in one second is known as the wave's
Question 2 options:
amplitude
frequency
energy
movement
Answer:
b
Explanation:
I did this quiz and i think a got it right i also looked up my answer to make sure it was right good luck on quiz :)
How many molecules of malic acid (C4H6O5), an acid found in apples and other fruits, are there in 1.25 g
Answer:
5.61 * 10²¹ molecules
Explanation:
You have 1.25 g of malic acid, C4H.Os, an acid found in apples and other fruits. How many molecules of the acid do you have?
Solution:
A molecule is the group of two or more atoms held together by chemical bonds.
The number of molecules is calculated using the formula:
number of molecules in a substance = number of moles of substance * Avogadro constant
Avogadro constant = 6.02 * 10²³ mol⁻¹
number of moles = mass / molar mass
Given that mass = 1.25 g
molar mass of malic acid (C₄H₆O₅) = (12 * 4) + (1 * 6) + (16 * 5) = 48 + 6 + 80 = 134 g/mol
number of moles = mass / molar mass = 1.25 g / 134 g/mol = 0.0093 mol
Recall that: number of molecules in a substance = number of moles of substance * Avogadro constant
number of molecules in a substance = 0.0093 mol * 6.02 * 10²³ mol⁻¹ = 5.61 * 10²¹ molecules
For the element Lithium give the number of bonds it would like to form with other atoms.
A)1
B)2
C)3
Answer: A) 1
Explanation:
Lithium is the third element of the periodic table with atomic number of 3. The atomic number is equal to the number of electrons for a neutral atom and thus there are 3 electrons in Lithium.
The electronic configuration of Lithium (Li) is [tex]1s^22s^1[/tex]. Thus it can gain one electron to complete its octet and attain stability. Thus it can form one bond with other atoms.
Example: Lithium can form one bond with flourine to form LiF by losing one electron to form [tex]Li^+[/tex].
In order to become stable in an ionic bond, oxygen needs to (A) gain 2 electrons (C) share 2 electrons B) lose 2 electrons
Answer:
gains 2 electrons. In order for the new ionic compound to form a a neutral compound, the oxygens must gain 6 electrons
Answer:
C
Explanation:
because you got to share
How many moles of gold, Au, are in 3.60 x 10^-5 g of gold?
1.83 × 10⁻⁷ mol Au
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
3.60 × 10⁻⁵ g Au (Gold)
Step 2: Identify Conversions
Molar Mass of Au - 196.97 g/mol
Step 3: Convert
Set up: [tex]\displaystyle 3.60 \cdot 10^{-5} \ g \ Au(\frac{1 \ mol \ Au}{196.97 \ g \ Au})[/tex]Multiply: [tex]\displaystyle 1.82769 \cdot 10^{-7} \ mol \ Au[/tex]Step 4: Check
Follow sig fig rules and round. We are given 3 sig figs.
1.82769 × 10⁻⁷ mol Au ≈ 1.83 × 10⁻⁷ mol Au
Helpppppp pleaseeeee with 16
Answer:
Neither accurate nor precise
Explanation:
The measurements shown on the table are neither accurate nor precise in value.
Accuracy is the nearness of the measured value to the true value.
Precision is the ability to reproduce a result.
From the given problem, we find that the true value is 1.52 and the average of the readings is not even close. So, it is not accurateAlso, there is no repeatability of the readings, so the work lacks precision. Therefore, this result is neither precise nor accurate.CHEMISTRY!! Please help!!
Answer:
Yes, because it follows the octet rule.
Explanation:
The Lewis is correct
because it follows the octet rule.
And
The octet rule states that atoms tend to form compounds in ways that give them eight valence electrons and thus the electron configuration of a noble gas.
Mass data for reaction of NaHCO3-Na2CO3 mixture with HCL:
Mass of crucible and cover (g) 28.8258
Mass of crucible, cover and mixture (g) 29.4948
Mass of crucible, cover and residue after reaction with HCL (g)
1st weighing... 29.4454
2nd weighing... 29.4455
Required:
Calculation of percent composition of NaHCO3 and Na2CO33 in an unknown mixture