Which term best describes a protein that speeds up chemical reactions in living things?

a. structural protein

b. enzyme

c. amino acid

d. transport protein?

What is the value for ∆Soreaction for the following reaction, given the standard entropy values? Fe2O3 (s) + 3H2 (g) 2 Fe (s) + 3H2O (g) + 138 J/K - 138 J/K + 5 J/K - 5 J/K 189 J/K

What is the name of the polyatomic in HCIO?* chloride chloride chlorate chlorite hypochlorite

The division of the earth's surface into twenty-four time zones is called: Greenwich time Standard time Meridian time Clock time

Why is trapped air a good insulator? It stops heat transfer. It is actually a poor insulator. It increases heat transfer. It reduces heat transfer.

Which statements describe proper use of a filter funnel? Check all that apply. Cut the filter paper in half before placing it in the funnel. Fold the filter paper in fourths before placing it in the funnel. Pour all the liquid through the funnel.

Which of the following polyatomic ions will form an ionic compound with two sodium ions? CO32- HCO31- NO21- NO31-

What is hybridisation

2. Seorang ibu perlu menyediakan satu hidangan kari daging dengan cepat untuk anaknya yang lapar. Langkah manakah yang berikut dapat membantu dia mencapai tujuan ini? (CL01, C2) A. Menggunakan periuk yang lebih besar B. Menambah banyak serbuk kari C.

Which of the following statements is not true? Question 4 options: When atoms have similar electronegativities, electrons are shared equally When electrons are shared equally, the molecule is called a nonpolar molecule.

Write the isotope symbol for two isotopes of the same element. What makes the isotopes different? How are they similar?