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3 years ago

What are two major differences in the composition of the inner and outer planets?

1 answer:

3 0

The small inner planets (Mercury, Venus, Earth, and Mars) are composed mostly of silicate rocks and metals; the outer planets (Jupiter, Saturn, Uranus, and Neptune) are much larger, consist mostly of gaseous hydrogen and helium and ice, and have large systems of icy moons.

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Which of the following elements has the lowest ionization energy?

lakkis [162]

Explanation:

Na (gas) -> Na+ (g) + e-

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3 years ago

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What is the total number of atoms in this formula?<br> NaHCO3

Pavel [41]

6 - one sodium atom, 1 hydrogen atom, 1 carbon atom, and 3 oxygen atoms.

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4 years ago

100.0 g of water was placed in a simple, constant-pressure calorimeter. The temperature of the water was recorded as 295.0 K. A

Marizza181 [45]

Answer:

$296.05\ \text{K}$

Explanation:

$m_w$ = Mass of water = 100 g

$c_w$ = Specific heat of water = $4.184\ \text{J/g K}$

$m_c$ = Mass of copper = 20 g

$c_c$ = Specific heat of copper = $0.385\ \text{J/g K}$

$\Delta T_w$ = Temperature change in water = $(T-295)$

$\Delta T_c$ = Temperature change in cooper = $(353-T)$

T = Final temperature of the system

The heat balance of the system is given by

$m_wc_w\Delta T_w=m_cc_c\Delta T_c\\\Rightarrow 100\times 4.184\times (T-295)=20\times 0.385\times (353-T)\\\Rightarrow 418400\left(T-295\right)=7700\left(353-T\right)\\\Rightarrow 418400T-123428000=2718100-7700T\\\Rightarrow T=\frac{1261461}{4261}\\\Rightarrow T=296.05\ \text{K}$

The final temperature of the water is $296.05\ \text{K}$ .

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3 years ago

What is the answer to this one????

torisob [31]

Answer:

A. 2-pentyne is the answer.

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3 years ago

What are all of the sublevels of the energy level "n" is 3? O s.p.f O s.p.d Ds.P O s.p.df

Varvara68 [4.7K]

Answer:

rrfg%weather uny557kum5un5u25i5u25

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3 years ago