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evablogger [386]
2 years ago
14

What is the mass of an object that creates 33,750J of energy by traveling at 30m/s?

Chemistry
2 answers:
Luba_88 [7]2 years ago
7 0
Apply the famous einteins equation....E=mc^2
Black_prince [1.1K]2 years ago
5 0

Answer:

m = 75 Kg

Explanation:

Given data:

Energy = 33750 J

Speed of object = 30 m/s

Mass of an object = ?

Solution:

Formula:

E = 1/2mv²

by putting values,

33750 J = 1/2 × m × (30 m/s)²

m = 2×33750 J/ (30 m/s)²

m = 67500 J /900 m²/s²

J = kgm²/s²

m = 75 Kg

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2 years ago
Calculate the total pressure in a 10.0 liter flask at 27°C of a sample of gas that contains 6.0 grams of hydrogen, 15.2 grams of
motikmotik

Answer:

The total pressure is 27.8 atm

Explanation:

From the ideal gas equation,

PV = nRT

P (total pressure) = nRT/V

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7 0
2 years ago
a chemical reaction produced 2.50 moles of nitrogen gas. what volume in liters, does this gas sample occupy at STP? (show your w
Harrizon [31]

The volume of N₂ at STP=56 L

<h3>Further explanation</h3>

Given

2.5 moles of N₂

Required

The volume of the gas

Solution

Conditions at T 0 ° C and P 1 atm are stated by STP (Standard Temperature and Pressure). At STP, the volume per mole of gas or the molar volume-Vm is 22.4 liters/mol.

So for 2.5 moles gas :

\tt 2.5\times 22.4=56~L

5 0
2 years ago
Which beaker has the least thermal energy?
Debora [2.8K]

Answer:

Breaker A

Explanation:

Because the temperature is cooler in A then the rest

3 0
3 years ago
Read 2 more answers
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