The composition of a given pure compound is always ___ no matter what the source of the compound. What is the chemical name of the compound: Si_3N_4^-? A compound is found to have a percent composition of 83.72% C...
What is a substance composed of two monosaccharides bonded together called? Describe the linkage between amino acids that form polypeptide chains. Which of the following amino acids is most likely to be found in a transmembrane alpha-helix? a. Histidine. b. Leucine. c. Lysine. d. Glutamin...
解析 A compound is a substance form two or more elements chemically united in fixed proportions. A molecule is a group of atom that can take part in a chemical reaction.结果一 题目 what's the difference between a compound and a molecule?rt 答案 A compound is a substance form two or ...
A negative ion is two different charges that combine to form a negative and one positive which forms into one balanced charge. The way that you name a compound is the cationic charge of a metal, which is the oxidation number. The other transitional and the new systematic names and also ...
If the pKbordissociation constantof an alkaline substance has a high enough value, the basic substance will dissociate into its component ions in aqueous solution even when the pH is already strongly basic (i.e. pH of about 12 or higher). The pH scale technically goes higher than 14.0, but...
10. Who is probably the man? A. A witness.B. A doctor.C. A policeman. 11. Which part of the woman’s car was damaged? A. The front.B. The side.C. The back. 12. What is the woman advised to do? A. ...
• Compound- A substance composed of two or more elements that are chemically bonded to form a new substance with different properties. • Example 1- Water. Water’s chemical formula is H2O. • Mixture- a combination of substances in which ...
A compound is a substance with atoms of different elements bonded together; a mixture has multiple substances mingled without chemical bonds.
1 what is a subscript in a chemical formula?what's the relationship between element and stom? 我科学作业做不出~~~Science! 还有几个问题: How to tell a substance is a compound or not a compound? How does the density make things sink of float in a liquid? chemical formula:carbon dioxide...
Compound A substance formed when two or more chemical elements are chemically bonded together. Water is a compound of hydrogen and oxygen. 8 Alloy Does not form via chemical reactions but through physical mixing. Solder, used in electronics, is an alloy of tin and lead. 6 Compound Exhibits pr...