Ask question

Ask question

All categories

Studentka2010 [4]

2 years ago

15

Please help me! Will mark brainliest! Thank you!

1 answer:

Kamila [148]2 years ago

8 0

Answer:

gas

Explanation:

You might be interested in

What is a substance's melting point?

TEA [102]

A melting point of a substance is a point at which the sample or substance start converting in liquid. For most substances, melting and freezing points are approximately equal. For example, the melting point and freezing point of mercury is 234.32 kelvins (−38.83 °C or −37.89 °F). Hope this helped!! :)

5 0

2 years ago

Read 2 more answers

If a warm wind passes over snow, the snow can be heated rapidly. When this happens, the snow can change directly into water vapo

aleksklad [387]

Answer:

Sublimation

Explanation:

7 0

2 years ago

Fe + H2SO4 = Fe2(SO4)3 + H2

a_sh-v [17]

C (667) that’s the answer boiii

5 0

2 years ago

In a lab experiment 80.0 g of ammonia [NH3] and 120 g of oxygen are placed in a reaction vessel. At the end of the reaction 72.2

valentinak56 [21]

The percent yield of the reaction : 89.14%

<h3>Further explanation</h3>

Reaction of Ammonia and Oxygen in a lab :

<em>4 NH₃ (g) + 5 O₂ (g) ⇒ 4 NO(g)+ 6 H₂O(g)</em>

mass NH₃ = 80 g

mol NH₃ (MW=17 g/mol):

$\dfrac{80}{17}=4.706$

mass O₂ = 120 g

mol O₂(MW=32 g/mol) :

$\tt \dfrac{120}{32}=3.75$

Mol ratio of reactants(to find limiting reatants) :

$\tt \dfrac{4.706}{4}\div \dfrac{3.75}{5}=1.1765\div 0.75\rightarrow O_2~limiting~reactant(smaller~ratio)$

mol of H₂O based on O₂ as limiting reactants :

mol H₂O :

$\tt \dfrac{6}{5}\times 3.75=4.5$

mass H₂O :

4.5 x 18 g/mol = 81 g

The percent yield :

$\tt \%yield=\dfrac{actual}{theoretical}\times 100\%\\\\\%yield=\dfrac{72.2}{81}\times 100\%=89.14\%$

6 0

2 years ago

In an attempt to study the variation of the boiling point of mixture (B + C), the teacher immerses a thermometer probe into the

grandymaker [24]

Answer:

All answers attached in the pictures above.

3 0

2 years ago