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3 years ago

Step 4: Solve the equation. KE = 27.5 kg x 4 m²/s2 =

1 answer:

4 0

Kinetic energy is 1/2m*v^2
They already halved the mass for you and they already squared the velocity for you. I’m unsure why you’re even asking this question. It’s simple multiplication at this point.
(27.5kg)*(4m^2/s^2) = 110 Jules

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As methane burns, it reacts with oxygen and forms carbon dioxide and water. The balanced chemical equation below models this che

Elan Coil [88]

Explanation:

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3 0

3 years ago

Acetic acid (CH3CO2H) is the principal component in the vinegar. What is the molarity of an acetic acid solution if a titration

Alexxx [7]

Answer : The molarity of an acetic acid solution is, 0.0338 M

Explanation :

Formula used :

$M_1V_1=M_2V_2$

where,

$M_1\text{ and }V_1$ are the molarity and volume of acetic acid.

$M_2\text{ and }V_2$ are the molarity and volume of NaOH.

We are given:

$M_1=?\\V_1=50.0mL\\M_2=0.0567M\\V_2=29.80mL$

Putting values in above equation, we get:

$M_1\times 50.0mL=0.0567M\times 29.80mL\\\\M_1=0.0338M$

Hence, the molarity of an acetic acid solution is, 0.0338 M

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3 years ago

In the image above the ruler is measuring in centimeters. The blue cylinder falls somewhere between 2.7cm and 2.8cm according to

Radda [10]

Answer:

The answer is below

Explanation:

Resolution is the smallest unit of measurement that can be measured by a measuring instrument. Each point on the ruler is 0.1 cm and the difference between any two points, about 0.01 cm cam be measured. The minimum measurement (resolution) that can be measured by the ruler is 0.01 cm (two decimals), therefore it cannot measure up to three decimal places such as numbers like 2.755.

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3 years ago

Identify the substance which has same number of molecules in 14g N2

valentina_108 [34]

We need to know the number of molecules which is number of moles * Avogadro’s number
So
We need to compare number of moles because Avogadro’s numbers is constant for all
We’ll start with Nitrogen gas : 14g/28g.mol=0.5 mole

For NH3 : 3.4g / (14+3)g.mol= 0.2 mol
For NO. : 15g/(14+16)g.mol = 0.5 mol
For O2 : 64g/32 g.mol = 2 mol
For SO2: 32g /( 32+32) g.mol = 0.5mol
For H2. : 1g/ 2g.mol = 0.5 mol

So
H2& SO2 & NO have the same number of moles of N2 and the same number of molecules of N2

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3 years ago

How to convert n butylbenzene to benzoic acid

Pavlova-9 [17]

Answer:

When an alkyl benzene is heated with strong oxidizing asgents like acidic or alkline KMnO4

or acidified K2Cr2O7

, etc. gives aromatic carboxyllic acid. The alkyl side chain gets oxidised to −COOH

group irrespective of the size of the chain.

Explanation:

4 0

3 years ago