2 years ago

1.How many sodium ions are there in 78.6 g of sodium phosphate?

1 answer:

6 0

Answer:

two

Explanation:

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jeka94

B 1.2g/mL just look at a graph and pin point those answers

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3 years ago

lesantik [10]

I think it is the third statement
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3 years ago

BartSMP [9]

Answer:

$Q_{metal} = -6799\,J$

Explanation:

By the First Law of Thermodynamics, the piece of metal and water reaches thermal equilibrium when water receives heat from the piece of metal. Then:

$Q_{metal} = - Q_{w}$

$Q_{metal} = m_{w} \cdot c_{p,w}\cdot (T_{1}-T_{2})$

$Q_{metal} = (250\,g)\cdot \left(4.184\,\frac{J}{g\cdot ^{\textdegree}C} \right)\cdot (25\,^{\textdegree}C - 31.5\,^{\textdegree}C)$

$Q_{metal} = -6799\,J$

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3 years ago

umka21 [38]

Answer:

Explanation:

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3 years ago

alex41 [277]

Answer:

Explanation:

co(so4)4

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3 years ago