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2 years ago

What material was added to powdered rock during tuttle and bowen's experiments?

Chemistry

1 answer:

Rzqust [24]2 years ago

4 0

Answer:

water was added to powdered rock

Explanation:

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. One mole of N2O4 contains ___________.

ivanzaharov [21]

One molecule of N2O4 contains

two nitrogen
four oxygen

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2 years ago

A4 g sugar cube (Sucrose : C 12 H 22 O 11 ) is dissolved in a 350 ml teacup of 80 C water. What is the percent composition by ma

lana66690 [7]

Answer:

%Sgr = 1% (1 sig.fig.)

Explanation:

mass water = 350ml x 0.975g/ml = 341.25g

mass sugar added = 4g

solution mass = 341.25g + 4g = 345.25g

%sugar = (4g/345.25g)·100% = 1.1586% ≅ 1% (1 sig.fig)

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2 years ago

in 1990, the men's singles winner of the us. open tennis tournament has his serves clocked at 127 mi/hr. How fast must a 56.6 g

Naddika [18.5K]

This problem is providing information about the mass of a tennis ball, 56.6 g (0.0566 kg) and asks for the velocity it will have to equal the wavelength of green light, which is 5400 A or 540 nm (5.4x10⁻⁷ m). Thus, after doing the math, the result is 2.17x10⁻²⁶ m/s.

<h3>Broglie's wavelength:</h3>

In this case, we recall the formula of the Broglie's wavelength as shown below:

$\lambda =\frac{h}{mv}$

Whereas lambda is the wavelength, h is the Planck's constant, m the mass and v the speed; thus, we solve for the speed according to the question:

$v =\frac{h}{m\lambda}$

<h3>Calculations:</h3>

Then, we just plug in the numbers we were given to get the answer:

$v =\frac{6.626x10^{-34} kg*\frac{m^2}{s} }{0.056kg*5.4x10^{-7}m}\\\\v=2.17x10^{-26}m/s$

Learn more about Broglie's wavelength: brainly.com/question/5440536

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1 year ago

I’m driving down the highway at 75.0 miles/hour, how fast is that in m/seconds?

Aliun [14]

Answer:

1.25 miles/ 1 minute

60x1.25=7.50

Explanation:

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3 years ago

Which of the following is a substance that is found between the cell membrane and the nuclear us which primarily consist of wate

Kazeer [188]

<span>Cytoplasm is the substance between the cell membrane and the nucleus which primarily consists of water and holds organelles.</span><span>
</span>

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2 years ago