State the colour of a solution of copper sulphate

How much energy is required to decompose 612 g of pcl3, according to the reaction below? the molar mass of pcl3 is 137.32 g/mol and may be useful. 4 pcl3 (g) ? p4 (s) + 6 cl2 (g) ? h°rxn = + 1207 kj a. 1.85 * 103 kj b. 3.46 * 103 kj c. 5.

How does an enzyme affect a chemical reaction?

Define high/low porosity and high. low permeablity?

Why do scientists need to study seismic waves to analyze the interior of the earth and the layers of the earth?

Which of the following elements has two valence electrons?

Nyatakan tiga aktiviti kerja yang melibatkan proses pengurusan projek reka bentuk.

Which technology works in conjunction with electronic collars to enable scientists to track endangered animals?

In an experiment, having too many variables A might solve the problem faster B could solve more than one problem C will cause too many problems D will not matter

The activation energy decreases with increase in temperature. why?

What are the characteristics of Archaebacteria? A. they are single cells that have a nucleus and tend to live in extreme conditions. B. they are single cells that lack a nucleus and tend to live in extreme conditions. C.