Answer:
Reactants.
Step-by-step explanation:
The equation for the reverse reaction is
Z + Q ⟶ X + Y; ΔH < 0
A negative ΔH indicates that the energy has been given off.
The products X + Y are at a <em>lower energy level</em> than the reactants Z + Q, and the excess energy has been <em>transferred to the surroundings</em>.
Answer:
H2 P4 O1. Explanation: In order to calculate the Empirical formula , we will assume that we have started with 10 g of the compound.
Explanation:
Answer:
Because the moon rotates as it revolves around the Earth, we only ever see on side of the moon (That is why we call the other side the "dark side of the moon").
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Answer:
1. An ancient study or art which attempted to combine science and philosophy to solve worldly problems Alchemy
2. A homogeneous mixture of elements with metals to form metallic solids Alloy.
3. The simplest unit of an element that still retains the properties of that element compound Atom
4. Two or more elements joined together such that the elements have lost their individual identity Compound
5. A primary substance that cannot be divided into separate substances element Element.
6. The group of elements that are good conductors of electricity and heat Metals
7 . The group of elements that are poor conductors of electricity and heat Non metal
