Question

Ammonium nitrate and ammonium sulfate are both fertilizers. A student is given a white solid and is told that it is either ammonium nitrate or ammonium sulfate. She adds sodium hydroxide to some of the solid contained in a test-tube, and then warms the mixture gently. The figure shows what the student observed. Explain the observation shown in the figure.

Answer 1

Answer:

Uses of kilns

Pit fired pottery was produced for thousands of years before the earliest known kiln, which dates to around 6000 BC, and was found at the Yarim Tepe site in modern Iraq. Neolithic kilns were able to produce temperatures greater than 900 °C (1652 °F).

Answer 2

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Usually, a female baby has 2 X chromosomes (XX) and a male has 1 X and 1 Y (XY). But in Klinefelter syndrome, a boy is born with an extra copy of the X chromosome (XXY). The X chromosome is not a "female" chromosome and is present in everyone. The presence of a Y chromosome.