Please write the following changes in the text expression 1. A dark red powder burns in oxygen and produces a lot of white smoke 2. A light yellow powder burns in the air and gives off a weak light blue flame 3. A silvery white metal burns in oxygen 4. A kind of black powder burns violently in oxygen and emits white light. The colorless gas generated can make clear lime water turbid

Phosphorus + oxygen = phosphorus pentoxide
Sulfur + oxygen = sulfur dioxide
Iron + oxygen = Fe3O4
Carbon + oxygen = carbon dioxide, carbon dioxide + calcium hydroxide = calcium carbonate + water

RELATED INFORMATIONS

1. All the expressions of words and letters before the ion in the ninth grade
2. Chemical oxygen production should be complete and good
3. In VB, such an expression M 5
4. The value of expression "25 / 2 ^ 3" in VB? Why?
5. How to write the expression in VB sq1 = Trim(Text4.Text) IF.THEN How to write an expression like "SS%" here
6. Ask the great Xia about the meaning of an expression in VB pi=4# * Atn(1#) edal=edal/100#
7. Chemistry (converting literal expressions into chemical equations) 1.h2+02-h20 2.h2+o2-hcl 3.c+o2- 4.s+o2- 5.hg+o- 6.p+o2- 7.fe+o2- 8.mg+o2-mgo
8. It is proved that the line passing through the right focus F of the ellipse intersects with the ellipse at a and B, and when the line is perpendicular to the X axis | ab | is the shortest It is proved that the line passing through the right focus F of the ellipse x ^ 2 + 4Y ^ 2 = 4 intersects the ellipse at a and B, and | ab | is the shortest when the line is perpendicular to the X axis Please prove that, in fact, when it is not vertical, | ab | > 1
9. Principles of Computer Organization Second Edition (Tang shuofei) Chapter 6 after class exercise answers 6.27 second sub question steps and answers,
10. Multiple choice question x = 0 is a function y = arctan1 / X X = 0 is the function y = arctan1 / X A. Removable discontinuities B. Jump breakpoint C. Infinite discontinuity D. Oscillation discontinuity
11. 1 / 3, 1 / 7, 1 / 9... The nth number is
12. The nth number is 2 4 6 8 10 what is the nth number? What is the nth number 14 9 16 25 what is the nth number? 12 / 14 / 18 / 16 what is the nth number What is the nth number of 0 3 8 15 24? What is the nth number of 1 3 6 10 15 What is the number n of 24 8 16 32
13. 1. - 3.5. - 7.9 according to this rule, how to express the nth number
14. 1, 3, 5, 7, 9. What's the nth number
15. 1, - 3,5, - 7... According to this rule, what is the nth number?
16. 1,5,9,13,17. Express the nth number with algebraic formula
17. A string number: 5, 10, 17, 26 The nth number is represented by an algebraic expression containing n
18. As in 2 / 3 - 3 / 4 4 / 5 - 5 / 6 6 / 7 - 7 / 8, the nth number
19. -1 / 2,2 / 3, - 3 / 4,4 / 5, - 5 / 6,7 / 8... Conjecture the sum of the nth number and the nth plus one number (n is odd)
20. 1,-2,3,-4,5,-6,7,-8…… What is the number 2004 and the number 2005?