1. Indica qué propiedades del ag a. Asciende por los finos vasos el interior de las plantas: b. Es un eficaz refrigerante al eva c. En los lagos, ríos y mares, el h liquida. En ella pueden seguir vivi d. El agua disuelve la mayoria de

\( 4 x + 3 + ) 2 x - 5 = \square x - \square \)

Q1 A 40.0-cm-diameter circular loop is rotated in a uniform electric field until the position of maximum electric flux is found. The flux in this position is measured to be \( 5.20 \times 10^{5} \mathrm{~N} . \mathrm{m}^{2} / \mathrm{C} \). What is the magnitude of the electric field? Q2 Consider a thin, spherical shell of radius 14.0 cm with a total charge of 32.0

3. Dans le Doc.3, identifier les réactifs et les produits de la réaction de l'arbre de Diane. 4. A l'aide des demi-équations données, identifier les deux couples Ox/Red mis en jeu dans le Doc. 3 5. Écrire l'équation de la réaction d'oxydoréduction de l'arbre de Diane.

Carbonyl bromide can dissociate into carbon monoxide and bromine: \[ \mathrm{COBr}_{2}(\mathrm{~g}) \rightleftharpoons \mathrm{CO}(\mathrm{g})+\mathrm{Br}_{2}(\mathrm{~g}) \] At \( 73^{\circ} \mathrm{C} \), the equilibrium constant in terms of pressures, K , for this dissociation reaction is 5.40 . (a) If 11.27 g of carbonyl bromide is placed in a 12.66 -L vessel and heated to \( 73^{\circ} \mathrm{C} \), what is the partial pressure of carbon monomide when equilibrium is attained? (b) What fraction of carbonyl bromide is dissociated at equilibrium?

What was one impact of the increased western population on the nation? Food had to be imported because there was not enough available land to support the population. Territories were given powers equal to states. Increased taxes brought a surplus to the federal government. Colorado, the Dakotas, and other territories became states.