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2 years ago

Fern spores usually form during: winter summer fall spring

Chemistry

2 answers:

nikdorinn [45]2 years ago

6 0

Answer:

they generally form during the summer.

Explanation:

hope I helped. :)

Eddi Din [679]2 years ago

3 0

Answer:

Summer.

Explanation:

Plants we see as ferns or horsetails are the sporophyte generation. The sporophyte generally releases spores in the summer. Spores must land on a suitable surface, such as a moist protected area to germinate and grow into gametophytes.

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A student designed an experiment to test the effect on the magnitude of the magnetic field that is generated around the wire loo

kykrilka [37]

Answer: C ) the student’s dependent variable is the magnitude of the magnetic field that is generated

E ) the student’s independent variable is the amount of current that is being passed through the wire

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2 years ago

What is the energy released in this β − β − nuclear reaction 40 19 K → 40 20 C a + 0 − 1 e 19 40 K → 20 40 C a + − 1 0 e ? (The

Effectus [21]

Answer: The energy released in the given nuclear reaction is 1.3106 MeV.

Explanation:

For the given nuclear reaction:

$_{19}^{40}\textrm{K}\rightarrow _{20}^{40}\textrm{Ca}+_{-1}^{0}\textrm{e}$

We are given:

Mass of $_{19}^{40}\textrm{K}$ = 39.963998 u

Mass of $_{20}^{40}\textrm{Ca}$ = 39.962591 u

To calculate the mass defect, we use the equation:

$\Delta m=\text{Mass of reactants}-\text{Mass of products}$

Putting values in above equation, we get:

$\Delta m=(39.963998-39.962591)=0.001407u$

To calculate the energy released, we use the equation:

$E=\Delta mc^2\\E=(0.001407u)\times c^2$

$E=(0.001407u)\times (931.5MeV)$ (Conversion factor: $1u=931.5MeV/c^2$ )

$E=1.3106MeV$

Hence, the energy released in the given nuclear reaction is 1.3106 MeV.

6 0

2 years ago

Is sugar a compound?

kvv77 [185]

Sugar is a compound.
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2 years ago

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olga_2 [115]

Sodium chloride is an ionic compound. ionic compound is when the compound itself is made up of a metal and non-metal element.
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2 years ago

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Sedaia [141]

Answer:

Explanation:

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2 years ago

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