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3 years ago

→ 7Ti2(SO4)3 Which number represents a coefficient? 2 3 4 7

2 answers:

6 0

The answer is 7. A coefficient is a number paired with a variable. Because T is paired with 7, it is therefore the coefficient.

Archy [21]3 years ago

5 0

Answer:

The coefficient of given compound is 7.

Explanation:

A coefficient is defined as a number which is placed before an expression. The given compound is $7Ti_2(SO_4)_3$ . It is named as Titanium (III) Sulfate.

The coefficient of the Titanium Sulfate is 7 whereas 2 represents number of atom of Titanium. The number of atoms of Sulfur are 3 and the number of atoms of Oxygen are 12.

Hence, the correct answer is "7".

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2 differences between calorimeter and thermometer ?

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Answer:

Calorimeter is used to measure heat in and represents that in units of joules per kelvin units J/˚C or kJ/K

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Explanation:

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3 years ago

An airplane is cruising at a speed of 250 m/s. If the airplanes engines provide a forward force of 19,540 N, calculate the force

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3 years ago

A cannonball with a mass of 50 kilograms and a golf ball with a mass of 0. 8 kilograms are dropped in a vacuum from a height of

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So when we're finally ready to try it, the cannonball and golf ball will make a kind of cute experiment, but let's make it really interesting. Let's ALSO try it with a feather, an apple, a watermelon, a tennis ball, a basketball, a coffeepot, a chair, an old computer, a set of dishes, a trombone, a bicycle, a math book, a TV set, a gallon of milk, a skateboard, a shotgun, a concrete block, a car, a waterbed, a schoolbus, a battleship, your dog, and my wife !

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The only way this doesn't happen is if ...

-- you do this experiment in some other place that's not Earth, or

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4 years ago

Do you think that's animals should be bred to develop a specific traits

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3 years ago

Two identical freight cars roll without friction (one at 1 m/s, the other at 2 m/s) toward each other on a level track. They col

Kazeer [188]

Answer:

They collide, couple together, and roll away in the direction that the 2m/s car was rolling in.

Explanation:

We should start off with stating that the conservation of momentum is used here.

Momentum = mass * speed

Since, mass of both freight cars is the same, the speed determines which has more momentum.

Thus, the momentum of the 2 m/s freight car is twice that of the 1 m/s freight car.

The final speed is calculated as below:

mass * (velocity of first freight car) + mass * (velocity of second freight car) = (mass of both freight cars) * final velocity

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Let's substitute the velocities 1m/s for the first car, and - 2m/s for the second. (since the second is opposite in direction)

We get:

$m*1 + m*(-2) = 2m*V$

solving this we get:

V = - 0.5 m/s

Thus we can see that both cars will roll away in the direction that the 2 m/s car was going in. (because of the negative sign in the answer)

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4 years ago