![](data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" viewBox="0 0 72 71" width="72"></svg>)
According to the law of conservation of mass: in A2 + B2 = = = 2c, the chemical formula of "C" can be expressed as----
C=AB
RELATED INFORMATIONS
- 1. According to the law of conservation of mass, the chemical formula of C in 2Ab + B2 = 2C is () A. ABB. AB2C. A2BD. A2B2
- 2. About the definition of sulfuric acid,
- 3. Who can put junior three chemistry involved in the chemical formula commonly known as and chemical formula listed one by one! Urgent junior three!
- 4. A student thinks that the chemical formula of oxygen is O2, the chemical formula of hydrogen is H2, and the chemical formula of nitrogen is N2. So all the chemical formulas of elemental matter can be expressed by R2. But in fact, his view is wrong. Please explain the reason
- 5. 33. According to the national quality standard, the urea sold on the market [chemical formula is co (NH2) 2], the urea content above 96% is the first grade product, which is sold by a dealer
- 6. A and B form two compounds a and B, in which a accounts for 50% of a and a accounts for 40% of B. if the chemical formula AB2 of a is known, the chemical formula of B is
- 7. Find out the chemical formula of the compound composed of copper and sulfur, in which sulfur accounts for 20% A series of equations or proportional expressions
- 8. A. The atomic radius of two short period elements a of B is smaller than that of B. the two elements can form compounds with the chemical formula AB2 with positive valence of A A, B may belong to the same cycle B A is the previous periodic element of B C a can only be a metallic element D A may be a group IIA or IVA element in the second cycle Ask for help and explain why, everyone
- 9. The chemical formula of the compound formed by aluminum and oxygen
- 10. Chemical formula of compound formed by lithium and oxygen
- 11. According to the law of conservation of mass, in A2 + B2 = 2c, the chemical formula of C can be expressed as A.B_____ ? The first two 2 are subscripts, and the second 2 is the measurement number
- 12. According to the law of conservation of mass, the chemical formula of substance C is () A.A2B B.AB2 C.AB3 D.AB Why C? Who can explain
- 13. If a + B = 6, ab = 7, then the value of A2B + AB2?
- 14. Given AB = 7, a + B = 6, then the value of polynomial A2B + AB2 is______ ．
- 15. Given AB = 7, a + B = 6, then the value of polynomial A2B + AB2 is______ ．
- 16. AC = (AB2 power + BC2 power) 1 / 2 = 5, ab = 3 m, BC = 4 m How to calculate? Can you write the calculation process
- 17. What are the times and items of the polynomial AB2 + 25 in Grade 7 (AB2 is actually the 2nd power of AB, and 25 is the 5th power of 2)
- 18. AB two times the product of the number, is it 2Ab or AB2 or AB 2 square! Please master answer!
- 19. 2 (A2 + AB2) - 2 (a2b-1) - 2ab2-2, branch
- 20. In the reaction A2 + 2ab2 = 4AB, 1g & nbsp; A2 reacts with enough AB2 to produce 5g AB, then the ratio of molecular weight of A2 to AB2 is () A. 3：4B. 4：3C. 1：2D. 2：1