91Ó°ÊÓ

Find $\mathit{K}$for

(a) the hydrolysis of ATP,

(b) the dehydration condensation to form glucose phosphate, and

(c) the coupled reaction between ATP and glucose.

(d) How does each $\mathit{K}$ change when $\mathit{T}$ changes from ${\mathbf{25}}^{\mathbf{°}}\mathit{C}$ to ${\mathbf{37}}^{\mathbf{°}}\mathit{C}$?

Give the formula of compounds in each set

1. Lead(II) oxide and lead(IV) oxide;
2. lithium nitride, lithium nitrite, and lithium nitrate;
3. strontium hydride and strontium hydroxide;
4. magnesium oxide and manganese(II) oxide.

Each scene below represents a mixture. Describe each one in terms of the number of elements and/or compounds present.

What is the key difference between an element and a compound?

Describe the essential features of a scientific model.