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Alborosie
3 years ago
11

The dimensions of a box are 4.5 cm wide by 5.750 cm long by 1.50 cm tall. What is the volume of the box , taking significant fig

ures into account?
Chemistry
2 answers:
FromTheMoon [43]3 years ago
6 0

Answer:

38.8125

Explanation:

AlladinOne [14]3 years ago
4 0

Answer:

39

Explanation:

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What coefficients would balance the following equation?<br><br> __C2H6 + __O2 → __CO2 + __H2O
lina2011 [118]
2C2H6 + 7O2 → 4CO2 + 6H2O
3 0
2 years ago
The decomposition of NI3 to form N2 and I2 releases −290.0 kJ of energy. The reaction can be represented as 2NI3(s)→N2(g)+3I2(g)
EastWind [94]

Answer:

-7.34 kilo Joules is the change in enthaply when 20.0 grams of nitrogen triiodide decomposes.

Explanation:

Mass of nitrogen triiodide = 20.0 g

Moles of nitrogen triiodide = \frac{20.0 g}{395 g/mol}=0.05063 mol

2NI_3(s)\rightarrow N_2(g)+3I_2(g), \Delta H_{rxn}=-290.0 kJ

According to reaction, 2 moles of nitrogen triiodide gives 290.0 kilo Joules of heat on decomposition ,then 0.05063 moles of nitrogen triiodide will give :

\frac{-290.0 kJ}{2}\times 0.05063=-7.34 kJ

-7.34 kilo Joules is the change in enthaply when 20.0 grams of nitrogen triiodide decomposes.

3 0
3 years ago
In which or areas on the image dose salinity of the ocean increases
Ronch [10]

Answer and Explanation:

D I believe..

8 0
2 years ago
What energy does a rock resting on a hilltop store?
Hunter-Best [27]

Answer:

gravitational energy

Explanation:

It is gravitational (potential) energy because of the place that the rock holds in the gravitational field. It has <u>potential</u> to move downward, because of <u>gravity</u>.

7 0
3 years ago
Choose the element described by the following electron configuration. 1s22s22p63s23p64s1
Jobisdone [24]

Hey there.

By adding up all the "exponents," you'll get a number of 19. By looking at a periodic table, the element of such an atomic number is potassium or K.

3 0
3 years ago
Read 2 more answers
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