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Fittoniya [83]
2 years ago
10

What has affected the honeybee population?

Chemistry
1 answer:
Darya [45]2 years ago
7 0
1. pesticides: that are sprayed on crops and flowers

2. global warming: warm winters have caused plants to shift their schedules. when the honey bees come out of hibernation, the flowers they need to feed on have already bloomed and died 

3. pathogens carried by mites weaken bees
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What is Co³⁺ and Co¹⁺
WITCHER [35]

Answer:

https://clever.com/

Explanation:

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2 years ago
Use Hess's law to calculate AG° rxn using the following information.
PIT_PIT [208]

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AG rxn=+394.4 kJ

Explanation:

3 0
11 months ago
You have 180 g of radium that takes up 36 cm ^ 3 of space if you were to cut it in half and have only 90 g
Leno4ka [110]

If you were to cut the radium  in half and have only 90 g, it will take up 18 cm³.

<h3>What is density?</h3>

The density of an object is the ratio of mass to volume of object.

Density = mass/volume

volume = mass/density

at a constant density, the volume of an object is proportional to its mass.

From the question, you have 180 g of radium that takes up 36 cm ^ 3 of space if you were to cut it in half and have only 90 g, the new mass will take the following volume.

180 g = 36 cm³

90 g =  ?

= (90 x 36) / 180

= 18 cm³

Thus, if you were to cut the radium  in half and have only 90 g, it will take up 18 cm³.

Learn more about radium here: brainly.com/question/23781489

#SPJ1

6 0
1 year ago
A student measures the mass of a sample as 9.64 g. Calculate the percentage error, given that the correct mass is 9.80 g.
rosijanka [135]

Answer:

<h3>The answer is 1.63 %</h3>

Explanation:

The percentage error of a certain measurement can be found by using the formula

P(\%) =  \frac{error}{actual \:  \: number}  \times 100\% \\

From the question

actual mass = 9.80 g

error = 9.80 - 9.64 = 0.16

We have

p(\%) =  \frac{0.16}{9.80}  \times 100 \\  = 1.632653061...

We have the final answer as

<h3>1.63 %</h3>

Hope this helps you

5 0
3 years ago
During a chemical reaction, energya)is converted form one from to anotherb)increasesc)decreasesd)is used up as bonds and broken
alekssr [168]
A) energy is converted from one form to another
7 0
2 years ago
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