The March Revolution resulted from what causes?

What were the causes of the Russian Revolution of March 1917?

Briefly explain the significance of Treaty of Versailles.

A 25.0-mL sample of 0.050 M barium nitrate solution was mixed with 25.0 mL of 0.050 M sodium sulfate so lution labeled with radioactive sulfur-35. The activity of the initial sodium sulfate solution was $1.22 \times 10 ^ { 6 } \mathrm { Bq } / \mathrm { mL }$ After the resultant precipitate was removed by filtration, the remaining filtrate was found to have an activity of 250 Bq/mL. Write a balanced chemical equation for the reaction that occurred.

Vitamin D, whether ingested as a dietary supplement or produced naturally when sunlight falls on the skin, is essential for strong, healthy bones. The bone disease rickets was largely eliminated in England during the 1950s, but now there is concern that a generation of children more likely to watch TV or play computer games than spend time outdoors is at increased risk. A recent study of 2700 children randomly selected from all parts of England found 20% of them deficient in vitamin D. Explain carefully what your interval means.

Evaluate each determinant.

$$\left[\begin{array}{rrr}{5} & {1} & {0} \\ {0} & {2} & {-1} \\ {-2} & {-3} & {1}\end{array}\right]$$

The world price of wine is below the price that would prevail in Canada in the absence of trade. a. Assuming that Canadian imports of wine are a small part of total world wine production, draw a graph for the Canadian market for wine under free trade. Identify consumer surplus, producer surplus, and total surplus in an appropriate table. b. Now suppose that an unusual shift of the Gulf Stream leads to an unseasonably cold summer in Europe, destroying much of the grape harvest there. What effect does this shock have on the world price of wine? Using your graph and table from part (a), show the effect on consumer surplus, producer surplus, and total surplus in Canada. Who are the winners and losers? Is Canada as a whole better or worse off?

Which event led the German Republic to seek an armistice in 1918?

Chlorine gas can be produced in the laboratory by adding concentrated hydrochloric acid to manganese(IV) oxide in the following reaction:

$$\operatorname { MnO } _ { 2 } ( s ) + 4 \mathrm { HCl } ( a q ) \longrightarrow \operatorname { MnCl } _ { 2 } ( a q ) + 2 \mathrm { H } _ { 2 } \mathrm { O } ( l ) + \mathrm { Cl } _ { 2 } ( \mathrm { g } )$$

a. Calculate the mass of

$$\mathrm { MnO } _ { 2 }$$

needed to produce 25.0 g of

$$CL_2$$

. b. What mass of

$$\mathrm { MnCl } _ { 2 }$$

is produced when 0.091 g of

$$Cl_2$$

is generated?

What developments in the conservation of natural resources occurred in the early 1900s?

Write the number in scientific notation. Distance (in meters) to the star Vega: 239,000,000,000,000,000

What was a major result of the Russo Japanese war

What was a major result of the Russo-Japanese War?

find the distance between the point and the line. Point (1, 4). Line y = 4x + 2