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4 years ago

Which atom is smaller? (1 point) A. Hydrogen B. Oxygen

Chemistry

1 answer:

frutty [35]4 years ago

6 0

Hydrogen because it only has one electron

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Molecules in a sample of NH3 are held closely together by intermolecular forces

morpeh [17]

The forces in NH3 includes the vanderwaals force which will always be present and hydrogen bonding due to the electronegativity of N as compared to H. When it is in solution, there will be ionic interactions because there will be some NH4+ ions formed.

4 0

4 years ago

Calculate the hydroxide ion concentration [oh-] for human urine (ph = 6.2). notice this is about hydroxide.

igomit [66]

[OH⁻] = 1.6 × 10⁻⁸ mol / dm³

<h3>Explanation</h3>

By definition, $[\text{H}^{+}] = 10^{-\text{pH}}$ , where $[\text{H}^{+}]$ is the concentration of proton in the solution.

pH = 6.2 for this solution. As a result, $[\text{H}^{+} = 10^{-6.2} = 6.31 \times 10^{-7} \; \text{mol} \cdot \text{dm}^{-3}$ .

$[\text{H}^{+}] \cdot [\text{OH}^{-}] = \text{K}_w$ , where $[\text{OH}^{-}]$ the concentration of hydroxide ions and $\text{K}_w$ is the dissociation constant of water.

$\text{K}_w = 10^{-14} \; \text{mol}\cdot \text{dm}^{-3}$ at 0.10 MPa and 25 °C. As a result, $[\text{OH}^{-}] = \text{K}_w / [\text{H}^{+}] = 10^{14} / (6.31 \times 10^{-7}) = 1.6 \times 10^{-8} \; \text{mol}\cdot \text{dm}^{-3}$ .

5 0

3 years ago

ASAP WILL GET BRAINLIEST IF CORRECT!!!!!!!!!!!!!!!!

tigry1 [53]

Answer:

Both have infinite range i believe

Explanation:

7 0

3 years ago

Which of these resources are renewable? Check all that apply. natural gas wind minerals forests tides geothermal energy

PolarNik [594]

Here is a list of some renewable resources, I hope these help answer the question, or help to answer it.

-ethanol

-hydropower

-geothermal power

-wind energy

-solar energy

-biomass

(Biomass refers to organic material from plants and animals)

4 0

3 years ago

Use the measurements in the table to determine which unidentified metal has the highest density.

svet-max [94.6K]

ANSWER: A

EXPLANATION:

THE FORMULA FOR DENSITY IS MASS DIVIDED BY VOLUME.

D= M/V

So divide the mass by the volume.

For A, 122 divided by 10.5 is 11.62

For B, 132 divided by 14.2 is 9.295

For C, 115 divided by 16.1 is 7.143

For D, 126 divided by 12.7 is 9.921

A IS THE ANSWER BECAUSE ITS THE LARGEST AMOUNG THE OTHERS.

6 0

4 years ago

Read 2 more answers