How are igneous rocks formed?

What is the average atomic mass of lithium?

leonid [27]

The average atomic mass of lithium is 6.941 amu.

4 0

4 years ago

Select all the true statements regarding chemical equilibrium. the concentrations of reactants and products are equal. the conce

lys-0071 [83]

The true statements are B, C, and D
-first ( A ) the concentrations of reactants and products are equal is false, As the concentrations of reactants and products may be different from each other.
- But (B) the concentrations of reactants and product remains constant is true, as the equilibrium remains when there is no change in the concentration of the reactants and products.
-(c) reactants are being converted to products (and vise verse) is true also, as there are reactions still happened at a constant rate so it looks like nothing is happening.

5 0

4 years ago

The half-life of an element is 200 years. If a 30 gram sample was originally deposited, how much is left after 200 years? Questi

quester [9]

The gram that will be left is 15grams

7 0

3 years ago

A solar panel combines multiple photovoltaic cells. Which type of energy is used to power a solar panel? kinetic energy thermal

fredd [130]

<h2>Answer : Electromagnetic energy</h2><h3>Explanation :</h3>

The solar panel usually combines multiple photo voltaic cells. Electromagnetic energy is used to power a solar panel. As the electromagnetic energy or rather radiations from the sun reaches to Earth in the form of radiation which is then collected by these photo voltaic cells. As the term solar energy simply suggests that the energy is coming from the sun. Thus, electromagnetic energy coming from the sun was produced when electric charges inside the sun change their potential energy.

6 0

3 years ago

An element, X, can form a chloride (XCl3) and an iodide (XI3). The chloride can be converted quantitatively into the iodide when

Arlecino [84]

Answer : The chemical symbol for this element is, (La)

Explanation : Given,

Mass of $XCl_3$ = 0.760 g