3 years ago

How is radar ?????????

Chemistry

1 answer:

AveGali [126]3 years ago

3 0

I believe that the answer is the last option in the photo.

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Convert eachh into scientific notation

mixer [17]

Answer:

0.00580 →

3000 →

0.000908 →

200. →

Explanation:

yay

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3 years ago

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What is the wavelength if the frequency is 29.2 hz?

ZanzabumX [31]

Answer : The wavelength is $1.027\times 10^7m$

Solution : Given,

frequency = 29.2 Hz

Formula used :

$\nu=\frac{c}{\lambda}\\\lambda=\frac{c}{\nu}$

where,

$\nu$ = frequency

$\lambda$ = wavelength

c = speed of light = $3\times 10^8m/s$

Now put all the given values in this formula, we get the wavelength.

$\lambda=\frac{3\times 10^8m/s}{29.2Hz}=0.1027\times 10^8m=1.027\times 10^7m$ $(1Hz=1s^{-1})$

Therefore, the wavelength is $1.027\times 10^7m$

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3 years ago

77.In the early days of automobiles, illumination at night was provided by burning acetylene, C2H2. Though no longer used as aut

natta225 [31]

Answer:

554.86kj

Explanation: Since 1 mole of CaC2=15.14kj yield 1mole of C2H2

The enthalpy change of H2O is 2*285=570

570+-15.14=554.86kj

Hence Hp is 554.86kj

He=Hp

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3 years ago

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Which probably best indicates that a compound contains an ionic bond

alex41 [277]

I’m thinking

It conducts electricity when Molten.

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3 years ago

Balance the chemichal equation:<br> NH3+CuO➡️Cu+N2+H2O

Gala2k [10]

2NH3+3CuO➡️3Cu+N2+3H2O

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3 years ago