HU
O escritor Eduardo Bueno conta, em um de
seus livros sobre a História do Brasil, que
cada marinheiro da esquadra de Pedro Al-
vares Cabral recebia mensalmente para suas
refeições em alto-mar 15 kg de alimentos,
entre eles carne salgada, cebola, vinagre,
azeite, e 12 kg de biscoito. O vinagre era usa-
do nas refeições e também para desinfetar
o porão, de onde acreditavam que vinha a
mais temível das doenças da vida no mar,
que provocava dores nas articulações e
sangramento no nariz e nas gengivas.
No século XVIII essa doença passou a ser evi-
tada com a inclusão de frutas como limão e
laranja na dieta dos marinheiros.
a) Como se chama essa doença?
b) Por que as frutas citadas impedem o apare-
cimento da doença?

An electrons position cannot be known precisely only it's probability of being in a certain location can be known

Ineed someone to see if my answers are correct! if any are wrong let me know what the correct answers would be and how to get that answer! 1. how many moles of sodium chloride are in 28 grams od nacl? a. 265 mole naclb. 856 mole naclc. 479 mole of nacld. 1.2 mole nacl < my choice2. 734 grams of lithium sulfate (li2so4) are dissolved to make 2500 ml of solution what is rhe molaratiy? a. 2.67 mb. 4.56 mc. 3.89 m < my choiced. 1.78 m3. how many grams of cacl2 would be dissolved in 3.0 l of a 0.50 m solution of cacl2? a. 250 g cacl2 b. 166.5 g cacl2c. 113.65 g cacl2d. 98 g cacl2 < my choice4. suppose you had 58.44 g of nacl and you dissolved it in exactly 2.00 liters. the molarity if the solution would be 0.5 mtrue < my choicefalse 5. i would need 22g of naoh to make a 3.0 m solution using 250 ml of solvent. true < my choicefalse6. identify the solute: you have a .0195 m solution made from using 6.5 g of solute and 3 l of solvent. identify the solute by solving for molar weight. a. the solute is nacl because the molar weight is 58.43 g/mol < my choiceb. the solute is h2so4 because the molar weight is 98.06 g/molc. the solute is cacl2 because the molar weight is 111.11 g/mol

Select all that apply. using a value of ksp = 1.8 x 10-2 for the reaction pbcl2 (s) pb+2(aq) + 2cl -(aq). the concentration of the products yield a ksp of 2.1 x 10-2: