Recent activity by Ann49656245

1 answer 29 views

How does the chemical structure of common sunscreen agents affect their ability to absorb UV radiation?

asked 3 days ago in PhotoChemistry

1 answer 16 views

What is the bond enthalpy of the carbon-hydrogen (C-H) bond in methane (CH4) ?

asked 4 days ago in Chemical bonding

1 answer 10 views

Design a synthetic route to prepare (Z)-4-octene from 1-octyne using any suitable reagents and reaction conditions, while achieving a high yield and selectivity for the desired (Z)-isomer.

answered Feb 4 in Organic Chemistry

1 answer 62 views

Calculate the amount of energy in Joules required to melt 15 grams of ice at 0°C, given that the heat of fusion of water is 334 J/g.

answered Jan 23 in ThermoChemistry

1 answer 12 views

What is heuristic value in theory evaluation?

asked Jan 16 in Psychology

1 answer 32 views

What is the difference between self-efficacy and self-esteem?

asked Jan 14 in Psychology

1 answer 34 views

Which has more electrons, neon or fluorine?

asked Jan 8 in Science

1 answer 48 views

Where does most water evaporate from?

answered Jan 8 in Science

1 answer 31 views

What is defined as an antigen that causes an allergy?

answered Jan 6 in Science

1 answer 29 views

What form do biofuels take that makes them very useful?

answered Jan 6 in Science

1 answer 70 views

What causes genetic disorders?

asked Jan 6 in Science

1 answer 41 views

The four phases of mitosis are prophase, metaphase, anaphase and what?

answered Jan 2 in Science

1 answer 14 views

The shape of a virus is determined by the type and arrangement of proteins in its what?

answered Dec 27, 2024 in Science

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