What is produced when calcium reacts with fluorine in a synthesis reaction? Ca + F2 →

Answers

Answer 1

Answer: When calcium reacts with fluorine in a synthesis reaction, calcium fluoride or CaF2 is produced. This compound is a colorless, powdery, and insoluble substance. It is used as a coating in a wide variety of industries such as the windows and lenses industries. Also, it is used in different thermal imaging equipment, spectroscopy, and lasers because of its transparency.

Answer 2

Answer:

its f2 to the ca +f2

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The Coriolis effect is the result of which of the following? A. winds spinning off the equator B. the rotation of the earth on its axis C. the different air movements north and south of the equator D. the friction that slows down winds near the earth’s surface

Answers

The answer is B. the rotation of the earth on its axis.

Coriolis effect is the effect of the Earth's rotation on theoceans and atmosphere. It is the cause of deflection to the right in thenorthern hemisphere and to the left in the southern hemisphere. Thus, in thenorthern hemisphere, gyres spin clockwise, and in the southern hemisphere, gyres spin counter-clockwise.

Answer:

B. the rotation of Earth on its axis

Explanation:

K12

Support that P(e)=0.76,P(F)=0.45,and P(E and F)=0.32. What is P (E or F)?

Answers

The probability of (E and F) = P(e) times P(f) = 0.76 x 0.45 = 0.342 .

The probability of (e OR f) =

   1 - P(not e AND not f) =

   1 - P(not e) x P(not f) =

   1 - (1 - 0.76) x (1 - 0.32) =

   1 - ( 0.24 )   x   ( 0.68 ) = 1 - 0.1632 = 0.8368.

Calculate the resistance of a lamp that draw 0.75 A current when connected to 4.5 V.

Answers

Calculate the resistance using the equation:

V=IR

In the question, the following values are given:

V = 4.5
I = 0.75

Substitute the values into the equation to find R, the resistance:

V = IR

4.5 = 0.75R

R = 4.5 / 0.75

R = 6 ohms

A universal law is a principle that is in effect everywhere at all times. Which example is likely to be a universal law? A. the force of attraction between two objects B. the model of the atom C. objects with like charges attract D. the theory of the atom

Answers

Id say B, only because atoms are everywhere.

A. the force of attraction between two objects

Because gravity is a universal law.

The temperature of a system must increase when heat energy is added true or false?

Answers

False.

In fact, the temperature T of a system is directly proportional to the internal energy U of the system, and the first law of thermodynamics states that the variation of internal energy of a system is given by
$\Delta U = Q-W$
where
Q is the heat added to the system
W is the work done by the system on the surroundings

We see from the formula that we have 2 possible cases:
1) the heat added to the system (Q) is greater than the work done by the system (W) --> $\Delta U$ is positive, this means that the temperature of the system increases
2) the heat added to the system (Q) is less than the work done by the system (W) --> $\Delta U$ is negative, this means that the temperature of the system decreases

Therefore, it's not true that when heat is added to the system, its temperature must increase: it depends on the value of the work done, W. So, the original statement is false.

Explain the energy transformations that occur when breaking in a hybrid
vehicle.

Answers

it occur kinetic energy

when breaking in a hybrid

vehicle.

hope it helps

Answer:

it occur kinetic energy when breaking in a hybrid

vehicle .

hope it is helpful to you ☺️

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1. What conditions must exist in order for a force to do work on an object?

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