Societies have changed over time, and consequently, so has science. For example, during the first half of the 20th century, when the world was enmeshed in war, governments made funds available for scientists to pursue research with wartime applications — and so science progressed in that direction, unlocking the mysteries of nuclear energy. At other times, market forces have led to scientific advances. For example, modern corporations looking for income through medical treatment, drug production, and agriculture, have increasingly devoted resources to biotechnology research, yielding breakthroughs in genomic sequencing and genetic engineering. And on the flipside, modern foundations funded by the financial success of individuals may invest their money in ventures that they deem to be socially responsible, encouraging research on topics like renewable energy technologies. Science is not static; it changes over time, reflecting shifts in the larger societies in which it is embedded
Answer:
The answer to your question is:
2.- C₁₂ H₂₄ O₁₂
Explanation:
2.-
Data
CH2O
molar mass = 360.3 g/mol
Molar mass of CH2O = 12 + 2 + 16 = 30g
Divide molar mass given by molar mass obtain
x = 360.3/30
x = 12
Finally
C₁₂ H₂₄ O₁₂
Molar mass = (12 x 12) + (24 x 1) + (16 x 12) = 144 + 24 + 192 = 360 g
3.- First we need to write the complete equation of the reaction and balanced it.
Then, we need to convert the mass given to moles of each compound.
After that, we need used rule of three calculate the amount of products based on the moles of reactants given.
Finally, convert the moles to grams.
4.-
a.- It is a relation between the mass of product obtain in an experiment and the mass of a product obtain theoretically times 100.
b.-
35 g of Mg reacted with excess O2
percent yield = 90%
Actual yield = ?
Formula
Percent yield = (actual yield/theoretical yield) x 100
Equation
2Mg + O2 ⇒ 2MgO
48.62 g of Mg ----------------- 80.62 g of MgO
35g ------------------ x
x = 58 g of MgO (Theoretical yield)
Theoretical yield = 58 g of MgO
Actual yield = percent yield x theoretical yield / 100
= 90 x 58 / 100
= 52. 23 g
Answer:
O lowering the temperature of the system
Ice caps so it would be D
Hope it helps :-)
