Which element in Period 3 is the most active non-metal?
A. sodium
B. magnesium
C. chlor...
Physics, 16.04.2021 22:20 xxgissellexx
Which element in Period 3 is the most active non-metal?
A. sodium
B. magnesium
C. chlorine
D. argon
Answers: 3
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According to the law of conservation of mass, in a chemical reaction the total starting mass of all the reactants equal the total final mass of all the products. true or false?
Answers: 1
Physics, 21.06.2019 20:00
The first law of thermodynamics states that heat added to a system is neither created nor destroyed but is transformed ⇒ as it changes into other forms of energy.
Answers: 1
Physics, 21.06.2019 23:50
The discovery that the universe appears to be expanding led to a widely accepted theory called a.) the big bang theory b.) the doppler effect c.) hubble’s law d.) solar nebular theory e.) the seyfert theory
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Aperson gives a shopping cart an initial push along a horizontal floor to get it moving, and then lets go. the cart travels forward along the floor, gradually slowing as it moves. consider the horizontal force(s) on the cart while it is moving forward and slowing. which of the following statements is correct? (a) both a forward and a backward force are acting on the cart, but the forward force is larger. (b) only a forward force is acting which diminishes with time. (c) both a forward and a backward force are acting on the cart, but the backward force is larger. (d) only a backward force is acting, no forward force.
Answers: 3
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