Is this the right answer? Help.

Chemistry

1 answer:

Rus_ich [418]4 years ago

7 0

I accidentally clicked on this, I know nothing about chemistry, but you have pretty handwriting.

You might be interested in

Is platinum an element or compound

user100 [1]

Platinum, symbol Pt is an element

7 0

3 years ago

When a rock is altered by extreme heat and pressure, what type of rock is the result?

erik [133]

The way most metamorphic rock is formed. Change in rock is the result of metamorphism over a large area. Type of rock texture that results when extreme pressure causes minerals in metamorphic rock to realign, or when minerals separate out into dark and light bands.

6 0

3 years ago

Read 2 more answers

Claim The student hopes the samples are gold, which has a density of 19.3 g/cm3 . A local geologist suggested that samples might

spin [16.1K]

Answer:

Pyrite.

Explanation:

In this case, for the given samples, we compute the densities considering that the volume of each sample is computed by the difference between the volume of the water + sample and the volume of water:

$\rho_1=\frac{50.25g}{(60.3-50.1)mL}=4.92g/mL\\ \\\rho_2=\frac{63.56g}{(62.5-49.8)mL}=5.01g/mL\\\\\rho_3=\frac{g}{(61.5-50.2)mL}=5.10g/mL\\\\\rho_4=\frac{55.35g}{(56.7-45.6)mL}=4.99g/mL\\\\\rho_5=\frac{74.92g}{(65.3-50.3)mL}=4.99g/mL\\\\\rho_6=\frac{67.78g}{(60.8-47.5)mL}=5.10g/mL$

Therefore, since the density of the samples are closer to the density of pyrite (5.01 g/cm³) we conclude that the samples are more like to be pyrite.

Best regards.

8 0

3 years ago

If the volume of a gas is 958 mL at 75.0 C, at what temperature would the volume of the gas decrease to 822 mL

zhenek [66]

75.0 degrees Celsius = 75.0 + 273 = 348 K.

Assuming pressure is held constant,

$\frac{958}{348}=\frac{822}{T_{2}} \\ \\ \frac{348}{958}=\frac{T_{2}}{822} \\ \\ T_{2}=\frac{(822)(348)}{958} \approx 299 \text{ K} \\ \\ T_{2} \approx 299-273=\boxed{26^{\circ} \text{ C}}$

3 0

2 years ago

(GIVING BRAINLIEST!!!)What is the correct formula for the ionic compound that forms when oppositely- charged ions of magnesium a

allochka39001 [22]

Pretty confident that MgO is the answer

6 0

3 years ago