tranbaothycarot tranbaothycarot

13-10-2021
Chemistry

contestada

Câu 1: Oxide nào sau đây là oxide lưỡng tính? 2 MgO A Fe203 B ZnO Cao D

Respuesta :

namtu312 namtu312

13-10-2021

Answer:

chưa hiểu đáp ánkia cho lắm. Nhưng đáp án là ZnO nha

Explanation:

Answer Link

Otras preguntas

I need help to graphs these problem please

How much water should be added to 18ml of 10% alcohol solution to reduce to reduce the concentration to 9%

In the equation x^2 + mx + n = 0, m and n are integers. The only possible value for x is –3. What is the value of m ? A. 3 B. –3 C. 6 D. –6 E. 9

'What is the surface area, in square inches, of an 8-inch cube? F. 512 G. 384 H. 320 J. 256 K. 192'

(a + 2b + 3c) − (4a + 6b − 5c) is equivalent to: A. −4a − 8b − 2c B. −4a − 4b + 8c C. −3a + 8b − 2c D. −3a − 4b − 2c E. −3a − 4b + 8c

If an impulse is a fraction of a second and 30 impulses equal 1/2 second, how many seconds is represented by 90 impulses?

If 3^x = 54, then which of the following must be true? A. 1 < x < 2 B. 2 < x < 3 C. 3 < x < 4 D. 4 < x < 5 E. 5 < x

Which word is an interjection commonly used in advertising

Which word is an interjection commonly used in advertising

How many irrational numbers are there between 1 and 6 ? F. 1 G. 3 H. 4 J. 10 K. Infinitely many