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3 years ago

Which of the following issues do you think is most important when addressing food problems on a global scale?

Chemistry

1 answer:

Karo-lina-s [1.5K]3 years ago

7 0

Answer:

Removing chemicals from pesticides that could be harmful to the environment

Explanation:

This is a main food issue that is not only state-wide but global

1st option doesn't say anything about food issues which makes it unnecessary to address

2nd option is a suggestion and not necessary

4th option is again not exactly towards food issues so no need to address for this question

5th option isn't a issue as much as just something we could do for convenience and stability

6th option should already be in act and is unlawful to do which leads me to the correct option

3rd option is correct because it is still okay globally to put chemicals into our food to keep it looking better for longer amounts of time. Yet it is dangerous to us living beings and the environment.

So therefore 3rd option is correct

(have a great day!)

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Answer:

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Explanation:

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How would the amount of force needed to keep the kite in the air change if it were made out of a heavier material instead of a l

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A: the amount of force would need to be greater.

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3 years ago

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HRISTINA HERRERA: Attempt 1

Lunna [17]

Answer:

7.5 g of hydrogen gas reacts with 50.0 g oxygen gas to form 57.5 g of water.

Explanation:

Here we have the check if the mass of the reactants is equal to the mass of the products.

Reactants

$7.5+50=57.5\ \text{g}$

Products

$57.5\ \text{g}$

The data is consistent with the law of conservation of matter.

Reactants

$50+243=293\ \text{g}$

Products

$206+97=303\ \text{g}$

The data is not consistent with the law of conservation of matter.

Reactant

$17.7+34.7=52.4\ \text{g}$

Products

$62.4\ \text{g}$

The data is not consistent with the law of conservation of matter.

Only the first data is consistent with the law of conservation of matter.

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3 years ago

If 1,079.75 Joules of heat are added to 77.75 grams of water, by how many degrees Celsius would the water increase? Assume water

djyliett [7]

Answer:

If 1,079.75 Joules of heat are added to 77.75 grams of water, by 3.32 degrees Celsius the temperature of water will increase

$\Delta T=3.32 C^{0}$

Explanation:

$q = mC\Delta T$

Here , q = heat added / removed from the substance

m = mass of the substance taken

$\Delta T$ = Change in temperature

C = specific heat capacity of the substance

In liquid state the value of C for water is :

$4.18 J/gC^{0}$

Given values :

q = 1079.75 J

m = 77.75 gram

Insert the value of C, m , q in the given equation

$q = mC\Delta T$

on transposing ,

$\Delta T=\frac{q}{mC}$

$\Delta T=\frac{1079.75}{77.75\times 4.18}$

$\Delta T=3.32 C^{0}$

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4 years ago

3. (1 p) How many oxygen atoms are in 2.5 moles of nitrogen dioxide?

uranmaximum [27]

1.505X10^24 hope this helped :)

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3 years ago