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Tamiku [17]
3 years ago
11

How much energy in joules does a photon with a frequency of 6.89 x 10

Chemistry
1 answer:
xxMikexx [17]3 years ago
8 0

689

Explanation:

Ritz thks t too okay if appeal type topic topic egg Enzo team 6 users Elba room

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The magnetic field of an object exerts a force on any magnetic object around it.
11111nata11111 [884]

Answer: True

Explanation: this is true

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2 years ago
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Develop a demonstration to show how mass is not the same thing as weight
pychu [463]

This is more of a physics explanation, but here we go.

Mass is a measure of how much "matter" is in an object. Weight is the force applied onto an object by gravity. Weight itself can be related to mass like this:

f_g = mg

where g is a gravitational constant. For our purposes, it's defined by whatever planet you are on. Following this, we can demonstrate that mass is NOT the same thing as weight if we take two objects of the same mass and put them on different planets.

Let E refer to Earth and F refer to Mars

g_E = 9.81 m/s^2\\g_F = 3.711 m/s^2

Following this, we can see clearly that weight is not the same as mass:

m*9.81 : m*3.711 \\\int\limits^a_b {x} \, dx 9.81 \neq 3.711\\f_g E \neq f_g F\\

If weight was the same thing as mass, the two values would be the same, as the mass of the two objects is the same. But since weight is defined in the context of gravity, they are not.

4 0
3 years ago
What is the word equation for 2Mg+O2=2 MgO
yarga [219]

Answer:

magnesium + oxygen ----> magnesium oxide

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3 years ago
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A calorimeter measures the Choose... involved in reactions or other processes by measuring the Choose... of the materials Choose
yuradex [85]

Answer:

heat; temperature; surrounding; insulated.

Explanation:

A calorimeter can be defined as a scientific instrument (device) that is designed and developed for measurement of the heat involved in chemical reactions or other processes, especially by taking the measurement of the temperature of the materials surrounding the process.

Basically, a calorimeter is insulated using materials with a very high level of resistivity, so as to prevent heat transfer to the outside of the device (calorimeter).

Some of the components that make up a simple calorimeter are; thermometer, an interior styrofoam cup, an exterior styrofoam cup, cover, etc.

Additionally, a calorie refers to the amount of heat required to raise the temperature of a gram of water by one degree Celsius (°C)

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3 years ago
A student is given two clear solutions. One solution contained lead ions, Pb2+ and the other solution contains chloride ions, Cl
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<span>A chemical change has occurred creating a precipitate. 
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Hope I helped :)</span>
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3 years ago
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