Please help with this.
Answers
1. Double-Replacement reactions
2. Decomposition
3. Combustion
4. Syntesis
5. Single replacement
Further explanation
Given
Chemical equations
Required
Type of reaction
Solution
1. 2AgNO₃ + MgCl₂ ⇒ 2AgCl + Mg(NO₃)₂
Double-Replacement reactions. Happens if there is an ion exchange between two ion compounds in the reactant
2. 2KBr⇒2K +Br₂
Decomposition
Single compound breaks down in to 2 or more products
3. C₃H₈ + 5O₂ ⇒ 4H₂O + 3CO₂
Combustion
Hydrocarbon and Oxygen reaction and form water and carbon dioxide
4. NaO + H₂O ⇒ NaOH
Syntesis
2 or more reactants combine to form a single product
5. Zn + CuCl₂ ⇒ZnCl₂ + Cu
Single replacement
One element replaces another element from a compound
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Need help ASAP . Anybody ? - 20 points
b.Light bounces off surfaces.
c.Light travels in a curved path.
d.Light is made up of waves.
Answers
Answer : Option B) Light bounces off Surfaces.
Explanation : Zaccharias Janssen a scientist who was a spectacle maker, is considered to be the founder of a compound microscope; believed that the ray of light when focused on a reflecting surface bounces back. This was the main property of light which he discovered and which led him to a new innovation.
Answers
Molar mass of a molecule is the sum of the atomic mass of the individual elements in the molecule.
Atomic mass of Pb = 207 amu
Atomic mass of N = 14 amu
Atomic mass of O = 16 amu
Here amu stands for atomic mass unit
Molar mass of Pb(NO₃)₂ = 207 + [14 + (16 x 3)] x 2
= 207 + 28 + (48) x 2 = 331 g/mol
Answers
107*7 = 749km in one week
749/1.6 = 468.125 miles
468.125/39 = 12.0032051282 gallons of fuel needed
1 gallon = 4.54609 litres
1.1(Cost per litre)*4.54609(Number of litres per gallon)*12.0032051282(Number of gallons needed) = 60.0244158814 euros cost per week
60.0244158814 * 1.26 = 75.6307640105 dollar cost per week
$75.63
Answer:
$ 62.578
Explanation:
Conversion factors:
1 gal = 3.785 L
1.609km = 1 mi
$1.26 = 1 euro
1 week = 7 days
Converting the car’s mileage from mi/gal to km/L
39 mi/gal x 1 gal/3.785L x 1.609km/1 mi = 16.578 km/L
Finding the L required in a day
107 km x 1L/16.578 km = 6.45 L
Finding the euro spent in day
1.10 euro/L x 6.45 L = 7.095 euro/ day
Finding the euro spent in a week and converting it to dollars
7.095 euro/ day x 7 days x $1.26/ 1 euro = $ 62.578
Answers
The wave-mechanical model of the atom was proposed by Erwin Schrodinger that combined the works of Bohr and de Broglie. The electron was a three dimensional wave circling the nucleus in a whole number of wavelengths allowing the waveform to repeat itself as a stable standing wave (it can absorb energy form a nearby source which is oscillating at a proper frequency) representing the energy levels of Bohr model. He also said that Broglie’s model was correct about the matter waves and the electrons are located in the atomic space according to standing wave frequencies.
B. 3.6 x 10^2 Pa
C. 1.4 x 10^-1 Pa
D. 3.6 x 10^-2 Pa
***Idk how to solve this... pls explain?? thx :)
Answers
P = F / A
From the given above, we substitute the values to the equation.
P = F/A
P= F / (12.56r²)
P = 45 N / (12.56 x 5²
P = 0.143 N/m²
Therefore, the correct answer is option C, 1.4 x 10^-1 Pa.
Answers
One milliliter is equal to a thousandth of a liter, so divide by 1000..
Final answer:
To convert 22.0 mL to L, divide the given value by 1000.
Explanation:
To convert 22.0 mL to L, you need to use the conversion factor of 1 L = 1000 mL.
Therefore, to convert mL to L, divide the given value by 1000.
So, 22.0 mL = 22.0 mL / 1000 = 0.022 L.
Learn more about Unit Conversion here:
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