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4 years ago

The sun emits electromagnetic waves at many frequencies, but mostly in the infrared, visible, and ultraviolet

Chemistry

2 answers:

meriva4 years ago

3 0

The correct answer is radiant, radiant that get transferred into chemical energy

Sergeu [11.5K]4 years ago

3 0

Answer:

Explanation:

proof

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Balence K2MnO4(aq) +Cl2(g) ------> KMnO4(s) + KCl(aq)

Colt1911 [192]

2K2MnO4 + Cl2 -------> 2KMnO4 + 2KCl

5 0

3 years ago

Will the scientific method be different 100 years from now ? Why or why not?

sveta [45]

NO, it should not be the process is still the same . the only factors about it that should change is the experiment itself.:)

5 0

4 years ago

Read 2 more answers

In 1983, a pilot miscalculated the fuel requirement for Air Canada Fight 143 from Montreal to Edmonton. Halfway through the flig

drek231 [11]

Answer:

27,397.23 L would be needed for a successful trip.

Explanation:

The problem gives us <u>the density (ρ) of the fuel,</u> by telling us that there are 803 g of fuel in 1 L, in which case:

ρ= $\frac{mass}{Volume}=\frac{803g}{1L} =803\frac{g}{L}$

The required mass of fuel is 2.2 * 10⁴ kg, we can convert this value into g:

2.2 * 10⁴ kg * $\frac{1000g}{1kg}$ = 2.2 * 10⁷ g

We calculate the required volume (V), using the mass and density:

$803 g/L = \frac{2.2*10^{7}g }{V} \\V=\frac{2.2*10^{7}g }{803g/L}\\ V=27397.26 L$

Thus 27,397.23 L would be needed for a successful trip.

5 0

4 years ago

A hot 123.3 g lump of an unknown substance initially at 164.2 °C is placed in 35.0 mL of water initially at 25.0 °C and the syst

Anuta_ua [19.1K]

Answer:

The unknown substance is rhodium.

Explanation:

Heat lost by hot substance will be equal to heat gained by the water

$-Q_1=Q_2$

Mass of substance= $m_1=123.3 g$

Specific heat capacity of substance= $c_1=?$

Initial temperature of the substance = $T_1=164.2^oC$

Final temperature of substance= $T_2=T=48.6^oC$

$Q_1=m_1c_1\times (T-T_1)$

Mass of water = M

Volume of water ,V= 35 ml

Density of water = d = 1.00 g/mL

$M=d\times V=1.00 g/ml\times 35 mL=35 g$

Mass of water= $M = m_2=35 g$

Specific heat capacity of water= $c_2=4.184 J/g^oC$

Initial temperature of the water = $T_3=25.0^oC$

Final temperature of water = $T_3=T=48.6^oC$

$Q_2=m_2c_2\times (T-T_3)$

$-Q_1=Q_2$

$-(m_1c_1\times (T-T_1))=m_2c_2\times (T-T_3)$

On substituting all values:

we get, $c_1 =0.242 J/g^oC$

The value of heat capacity of the substance is equal to that of rhodium metal.Hence, the unknown substance is rhodium.

4 0

3 years ago

Which element combination will likely form monatomic ions?

antiseptic1488 [7]

Answer:

Potassium and iodine!

Hope this helps please give me brainliest!

God bless!

6 0

3 years ago