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3 years ago

Olympic athletes have lower resting heart rates because

Chemistry

1 answer:

Burka [1]3 years ago

3 0

<span>they exercise regularly, which improves the efficiency of their heart.

Hope this helps!

-Payshence xoxo</span>

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The balanced chemical equation for the combustion of butane is: 2C2H2 + 5O2 CO2 + 2H2O 2CH4 + 5O2 2CO2 + 4H2O 2C4H10 + 13O2 8CO2

SCORPION-xisa [38]

Butane is C₄H₁₀.

$C_4H_{10} + O_2 \to CO_2 + H_2O \\ \\
\hbox{balance carbon and hydrogen on the right-hand side:} \\
C_4 H_{10} + O_2 \to 4 \ CO_2 + 5 \ H_2O \\ \\
\hbox{balance oxygen on the left-hand side:} \\
C_4 H_{10} + \frac{13}{2} \ O_2 \to 4 \ CO_2 + 5 \ H_2O \\ \\
\hbox{multiply by 2 to get rid of the fraction:} \\
2 \ C_4H_{10} + 13 \ O_2 \to 8 \ CO_2 + 10 \ H_2O$

The balanced equation is 2 C₄H₁₀ + 13 O₂ <span>→</span> 8 CO₂ + 10 H₂O.

3 0

3 years ago

The compound gallium phosphide () is a compound semiconductor having mixed ionic and covalent bonding. The electronegativities f

9966 [12]

Answer:

$0.08875$

Explanation:

Hello,

In this case, the first step is to compute the difference in the electronegativity for the formed bond between gallium and phosphorous by:

$\Delta E=2.1-1.6\\\\\Delta E=0.5$

Thus, we can compute the percentage of ionic character by:

$\%\ ionic\ character=16\Delta E +3.5 (\Delta E)^2\\\\\%\ ionic\ character=16*0.5+3.5*0.5^2\\\\\%\ ionic\ character=8.875\%$

So the fraction is just:

$\frac{8.875}{100}=0.08875$

Which has sense since gallium phosphide is a non-polar compound.

Regards.

3 0

3 years ago

8. If a chemical reaction such as photosynthesis begins with 6 atoms of carbon (C), how many atoms of carbon (C) should be in th

NISA [10]

Answer

Explanation:

4 0

2 years ago

Can someone help me pls?

tia_tia [17]

Answer:

Uruguay became independent of Spain in 1811 and was annexed by Brazil until 1825. Following a three-year federation with Argentina, Uruguay became an independent nation in 1828. Thirty years later, the United States established diplomatic relations with Uruguay and the two nations have since maintained close ties.

Explanation:

hope this helps

have a good day

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3 years ago

Read 2 more answers

Identify indicators of a chemical reaction. Check all of the boxes that apply.

Marina CMI [18]

All except for absorption of heat

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11 months ago