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SOVA2 [1]
3 years ago
13

What specialized plant structures increase the probability of successful reproduction?

Chemistry
2 answers:
harkovskaia [24]3 years ago
8 0

Answer:

The pistil and the stamen.

Explanation:

Please Mark Me Branliest.

malfutka [58]3 years ago
6 0
Pretty sure it’s posted and stamen.
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Ammonium nitrate is an ingredient in cold packs used by sports trainers for injured athletes. Calculate the change in temperatur
Ronch [10]

Answer:

See explanation

Explanation:

First, we need to use the correct expression:

Q = m*Cp*ΔT  (1)

Q = n*ΔH  (2)

These are the 2 expressions to calculate heat or energy.

Now, we want to know the change of temperature of the nitrate in water after being added, so with the innitial data of nitrate, we can calculate heat using the second expression. First, we need to calculate moles with the molecular mass:

n = m/MM

n = 42/80.1 = 0.52 moles

With these moles, we can calculate heat with the ΔH of this reaction:

Q = 0.52 * 25.7 = 13.364 kJ or 13,364 J

However, this heat as is being absorbed, the value would be negative.

Now that we have heat, we can use expression (1) and plug these values to solve for ΔT, but before, we need to know the total mass of the solution (water + nitrate)

m = 250 + 42 = 292 g

now, solving for ΔT:

-13,364 = 292 * 4.18 * ΔT

ΔT = -13,363 / (292 * 4.18)

ΔT = -10.95 °C

3 0
3 years ago
When an electron in an atom spontaneously jumps from a higher energy state to a lower energy state, the atom?
vlabodo [156]
If an atom suffers from a collision, that causes an electron to jump from a lower to higher state, it is called collisional excitation 
6 0
3 years ago
True or False: As the ice warms up, the molecules get more energy and move around more from place to place to form liquid water.
Arada [10]
The answer is TRUE.

Hope it helps.
7 0
3 years ago
Read 2 more answers
When the equation below is balanced, the coefficient of sulfuric acid, h2so4 is: nacn + h2so4 → na2so4 + hcn?
horsena [70]
<span>2NaCN + (1)H2SO4 → Na2SO4 + 2HCN

</span><span>The coefficient of sulfuric acid is 1.</span>
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3 years ago
Which of the below elements will not likely form an ionic bond?
Nookie1986 [14]

Answer:

B

Explanation:

I think this is right

3 0
2 years ago
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