Non essential officers, judges, district attorney investigators, federal agents, victums, witnesses and politics are not permited to enter crime scenes unless they can provide information and history about the event.

6 0

3 years ago

How many moles are there in 2.35 grams of H2O?

Marysya12 [62]

Answer:

the answer is 0.13 moles

7 0

3 years ago

When carbon is burned in air, it reacts with oxygen to form carbon dioxide. When 15.6 g of carbon were burned in the presence of

NeX [460]

Answer: 5.72 g mass of carbon dioxide was produced

Explanation:

$C+O_2\rightarrow CO_2$

Moles of C = $\frac{\text{mass of carbon}}{\text{molar mass of carbon}}=\frac{15.6 g}{12 g/mol}=1.3 moles$

Mass of $O_2$ reacted = 59.1 g - 17.5 g = 41.6 g

Moles of $O_2\text{ reacted}=\frac{\text{mass of}O_2}{\text{molar mass of}O_2}=\frac{41.6 g}{32 g/mol}=1.3 moles$

According to reaction 1 mole $O_2$ produces 1 mole of $CO_2$ then 1.3 mole of $O_2$ will produce $\frac{1}{1}\times 1.3$ moles of $CO_2$

Mass of $CO_2$ :

=Moles of $CO_2$ × molar mass of $CO_2$ = 1.3 ×44 g/mol =

=57.2 grams

5.72 g mass of carbon dioxide was produced

7 0

3 years ago

A saline solution similar to that used for intravenous drips is made by dissolving 0.45 g sodium chloride in 50.00 g water. Whic

beks73 [17]

Answer:

E) 1, 2, and 3

Explanation:

50g H2O + 0.45g NaCl --> 50.45g saline solution

7 0

3 years ago