Chemistry Questions

According to the big bang theory, approximately when did the universe begin?4 billion years ago7 billion years ago11 billion years ago13 billion years ago
2 Answers
Name the two sub-atomic particles in the nucleus of an aluminium atom.
2 Answers
The functional group in an alcohol is the _____ group.
2 Answers
What are five types of chemical weathering
2 Answers
How much of a sample remains after five half-lives have occurred?
2 Answers
A researcher is designing a laboratory experiment to determine whether the inorganic substance A affects the rate of a reaction between two colored liquids, X and Y. When the reaction is complete, the liquid is clear. The reaction between X and Y is similar to one used by manufacturers to produce certain chemicals in factories. Which method would best answer his question about reaction rate and what will he find out about substance A?
2 Answers
Compare Dobereiner’s triads to the modern periodic table. What aspects of his idea agreed with the modern table and what aspects did not
2 Answers
The Al-Aqsa Mosque and Dome of the Rock are located in
1 Answers
What process causes dissolved substances to be left behind to form minerals after water in lakes or ponds evaporates?
1 Answers
How are chemical names andformulas related?
1 Answers
The only tissue in your body that is able to contract , or shorten
2 Answers
Water vapor changing to liquid water
1 Answers
What is the answer to mad of two or more substances together in the same place but not chemically combined7 letter word1st letter M 4th letter F 7th letter Elooks like this:M_ _F_ _E
1 Answers
Which electron configuration represents the electrons in an atom of Ga in an excited state?
2 Answers
How do we measure the acidity of rain?
1 Answers
Which pair of atoms can form an ionic bond?* Na, K (Sodium, Potassium)* K, F (Potassium, Fluorine)* F, Cl (Fluorine, Chlorine)* Na, Ne (Sodium, Neon)
2 Answers
Asexual organisms, as compared to sexual organisms, tend to be smaller, have shorter life spans, and produce little or no genetic variability between generations. This makes it harder for an individual asexual organism to survive and reproduce. What is one advantage that asexual organisms have that helps them to overcome these disadvantages?They never need to sleep.A They are able to find food easier.B They have higher reproductive rates.C They use energy more efficiently.
2 Answers
For a given chemical reaction, the addition of a catalyst provides a different pathway that(1) decreases the reaction rate and has a higher activation energy(2) decreases the reaction rate and has a lower activation energy(3) increases the reaction rate and has a higher activation energy(4) increases the reaction rate and has a lower activation energy
2 Answers