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3 years ago

How many grams of hydrogen are in "69" g of ch4o?

Chemistry

1 answer:

nasty-shy [4]3 years ago

6 0

Answer:

8.62 g of Hydrogen

Solution:

Molar mass of CH₄O (Methanol) is 32 g.mol⁻¹.

It means,

32 g of CH₄O contains = 4 g of Hydrogen

Then,

69 g of CH₄O will contain = X g of Hydrogen

Solving for X,

X = (69 g × 4 g) ÷ 32 g

X = 8.62 g of Hydrogen

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A particle accelerates from rest with an acceleration of 8.0m/s2. Calculate its velocity after 150s. What kinematic formula must

Ipatiy [6.2K]

Answer:

Final velocity: 1200 m/s

Explanation:

Formula: $\overline{a} = \frac{v - v_0}{t} = \frac{\Delta v}{\Delta t}$

Where:

a = average acceleration

v = final velocity

vo = starting velocity

t = elapsed time

Here the final velocity is unknown which we have to find. The initial is 0 m/s

as it was at rest. The time taken: 150 seconds. Acceleration given 8.0 m/s²

using the formula:

$\overline{a} = \frac{v - v_0}{t}$

$8 = \frac{v - 0}{150}$

$v = 1200$ m/s

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2 years ago

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What is the dielectric constant of hexane? and the dipole?

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The dielectric constant of hexane is 1.88 at 25 °C. Its dipole moment is 0.08 D.

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3 years ago

Hydrogen peroxide (H2O2) readily decomposes to form water and oxygen gas: 2H2O2(aq) → 2H2O(l) + O2(g) What concentration of hydr

Anastaziya [24]

Hydrogen peroxide is a powerful oxidizer. When exposed to sunlight it quickly decomposes to form water and oxygen as given by the following equation.

2H2O2(aq) → 2H2O(l) + O2(g)

Hydrogen peroxide is commercially available as a 30% w/w solution, which is the concentration that would facilitate the above reaction. This implies that the concentration would be 30 g of H2O2 in 100 g of the solution.

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3 years ago

Four different objects are placed on a number line at 0. The chart describes the motion of each object. Using the information in

mote1985 [20]

The chart with the information to answer this question may be found in other Brainly's link, so I attach it now.

Answer:

Explanation:

To facilitate the accompaniment of the reasoning, I copy the data here:

Object Motion

X 3 units left, 3 units right

Y 6 units right, 18 units right

W 8 units left, 24 units right

Z 16 units right, 8 units left

The distance is the scalar magnitude that indicates the total length of the path traveled.

The displacement is the vector that indicates how far the end point and the initial point are.

In order to calculate the distance, the displacement and the ratio r = distance/displacement, to check which object has a distance that is three times as great as its displacement, i.e. r = 3, we use this new chart:

Object Motion Distance Displacement ratio

X 3 units left, 3 units right 3 + 3 = 6 3 - 3 = 0 ∞

Y 6 units right, 18 units right 6 + 18 = 24 6 + 18 = 24 1

W 8 units left, 24 units right 8 + 24 = 32 -8 + 24 = 16 2

Z 16 units right, 8 units left 16 + 8 = 24 16 - 8 = 8 3

The ratios were calculated dividing the distance by the displacement: distance / displacement.

For the object Z, that was 24 / 8 = 3. Thus, the object that has a distance that is three times as great as its displacement is the object Z.