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irinina [24]
3 years ago
9

Select the correct answer.

Biology
2 answers:
aleksandrvk [35]3 years ago
5 0

Answer:

B

Explanation:

The rest are being scattered and transmitted however B is going up creating a V shape.

Lina20 [59]3 years ago
3 0

Answer: it's B.

Explanation: I hope this help.

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A student is collecting the gas produced
marissa [1.9K]

Answer:

0.062 moles of hydrogen gas

Explanation:

We must first out down the reaction equation before we can attempt to solve the problem.

Mg(s) + 2HCl(aq) ----> MgCl2(aq) + H2(g)

Next we obtain the number of moles in 1.5 g of magnesium metal from;

Molar mass of magnesium = 24.3 gmol-1

Number of moles of magnesium= mass/molar mass = 1.5g/24.3gmol-1 = 0.062 moles

From the reaction equation;

1 mole of magnesium metal yields 1 mole of hydrogen gas

0.062 moles of magnesium metal will yield 0.062 moles of hydrogen gas

Therefore, reaction of 1.5g of magnesium metal with excess hydrochloric acid will yield 0.062 moles of hydrogen gas.

7 0
3 years ago
I’ll mark u as brainliest!
Airida [17]

Answer:

39 purple stemmed plants

39 green stemmed plants

Explanation:

You'll end up with half and half! :)

5 0
3 years ago
What complementary strand of DNA would be produced from the strand of DNA shown below?<br> TCG GA
mariarad [96]
Complementary pairing goes like this:

A pairs with T and 
C pairs with G. Nothing about this changes unless you get to mRNA (But we won't go into that) :)

So if you have a strand that goes TCG GA then your pairing will look like this:

T A
C G
G C
G C
A T

Hope this helps!! :)
8 0
3 years ago
Read 2 more answers
The diagram above shows four steps in an attempt to investigate the release of gas during photosynthesis. Each setup was kept at
Lena [83]

Answer:

light

Explanation:

The above experiment is an investigation on the factors that affect photosynthesis which include carbon dioxide concentration,light intensity and quality,chlorophyll, water and temperature.Light was the independent variable. When the lant is moved to an area where light intensity is low, the rate of photosynthesis decreases.

After the experiment, oxygen gas is produced being a by-product of photosynthesis. Plants that are not adapted to an aquatic environment are not suitable for this experiment. The amount of carbon dioxide dissolved in water is low.

7 0
3 years ago
1. Which two structures are found in all plant epidermal cells? A cell wall and chloroplasts B cell wall and nucleus C chloropla
DochEvi [55]

Answer:

Cell wall and chloroplasts is correct option.

Explanation:

Hope it will help ^_^

6 0
3 years ago
Read 2 more answers
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