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stira [4]
3 years ago
11

A water tank is filled with water up to 3.5 m height caluclate the pressure given by the tanks at its bottom

Chemistry
1 answer:
Anna007 [38]3 years ago
3 0

Answer:

eşnatto

Luch bresder sksksjskdnsldkspdm

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Determine the mass in grams of 3.75 x 10^21 atoms of zinc. (the mass of one mole of zinc is 65.39 g)
Nastasia [14]

Answer: The mass in 3.75 \times 10^{21} atoms of zinc is 0.405 g.

Explanation:

Given: Atoms of zinc = 3.75 \times 10^{21}

It is known that 1 mole of every substance contains 6.022 \times 10^{23} atoms. So, the number of moles in given number of atoms is as follows.

Moles = \frac{3.75 \times 10^{21}}{6.022 \times 10^{23}}\\= 0.622 \times 10^{-2}\\= 0.0062 mol

As moles is the mass of a substance divided by its molar mass. So, mass of zinc (molar mass = 65.39 g/mol) is calculated as follows.

Moles = \frac{mass}{molar mass}\\0.0062 mol = \frac{mass}{65.39 g}\\mass = 0.405 g

Thus, we can conclude that the mass in 3.75 \times 10^{21} atoms of zinc is 0.405 g.

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3 years ago
The movement of water from earths surface and back again
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That's the Water Cycle.
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Write a program that allows the user to enter a number of quarters, dimes, and nickels and then outputs the monetary value of th
miskamm [114]

Answer:

// Program is written in C++ Programming Language

// Comments are used for explanatory purpose

// Program Starts here

#include<iostream>

using namespace std;

int main ()

{

// Declare Variables

int quarter, dimes, nickel, cent;

// Enter values for each

cout<<"Quarter: ";

cin>>quarter;

cout<<"Dimes: ";

cin>>dimes;

cout<<"Nickels: ";

cin>>nickel;

/*

In the United States, these coins have the following values

Quarter = 25 cents

Done = 10 cents

Nickel = 5 cent

Total cent is calculated below

*/

cent = 25 * quarter + 10 * dimes + 5 * nickel;

// Print Total

cout<<"The coins are worth "<<cent<<" cents";

return 0;

}

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3 years ago
What is surface tension
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Surface tension is a property of the surface of a liquid that allows it to resist an external force. It is revealed, for example, 
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<span>insects (e.g. water striders) and even reptiles (basilisk) to run on the water surface. This property is caused by cohesion </span>
<span>of like molecules, and is responsible for many of the behaviors of liquids..</span>
4 0
3 years ago
Read 2 more answers
Polymer formed from methylene diphenyl isocyanate
marin [14]

Answer:

Polymeric MDI is a mixture of. monomeric MDI as well as larger molecular weight oligomers of MDI, and is a brownish. liquid at room temperature and may have a slight odor. Commercial MDI products are. often mixtures of monomeric and polymeric MDI and can contain other additives as well.

Explanation:

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