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3 years ago

What volume of a 1.3 M solution of Na2CO3 can be made from 800 ml. of a 4.9

Chemistry

1 answer:

galben [10]3 years ago

4 0

2.5 m that’s the answer yessir

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A student calculates the density of iron as 6.80 g/cm3 using lab data for mass and volume. a handbook reveals that the correct v

Irina18 [472]

<span>% error = (actual value - calculated value) / actual value x 100% hence % error = (7.89 - 6.80) / 7.89 x 100% = 13.8% (to 3 significant figures)</span>

6 0

3 years ago

Liquid methylene bromide has a density of 2.50 g/mL. A barometer is constructed using methylene bromide instead of mercury. If t

vova2212 [387]

Answer:

393 cm

Explanation:

Step 1: Given and required data

Density of liquid methylene bromide (ρ): 2.50 g/mL (2.50 g/cm³)

Earth's gravity (g): 9.81 m/s²

Atmospheric pressure (P): 0.950 atm

Step 2: Convert 0.950 atm to Pa (N/m²)

We will use the conversion factor 1 atm = 101325 Pa.

0.950 atm × 101325 Pa/1 atm = 9.63 × 10⁴ Pa

Step 3: Convert 2.50 g/cm³ to kg/m³

We will use the conversion factors:

1 kg = 10³ g

1 m³ = 10⁶ cm³

$\frac{2.50g}{cm^{3} } \times \frac{1kg}{10^{3}g } \times \frac{10^{6}cm^{3} }{1m^{3} } = 2.50 \times 10^{3} kg/m^{3}$

Step 4: Calculate the height (h) of the liquid column

We will use the following expression.

P = ρ × g × h

h = P / ρ × g

h = 9.63 × 10⁴ Pa / (2.50 × 10³ kg/m³) × 9.81 m/s²

h = 3.93 m = 393 cm

7 0

3 years ago

When the tide is receding (high tide to low tide) through a narrow area it can pull a large amount of water through a narrow gap

Ganezh [65]

It’s called a rip current.

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How many times do u have to run back and forth across a football field to be meter

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You would have to run 100 kilometers across it once. Then you will have to run 10 meters across it because a football field is 110 meters according to the NFL’s website

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3 years ago

Which object in the diagram represents earths moon

mash [69]

Answer is number 4.

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3 years ago