Super easy just add 2 in front of Na H CO3(s). Your formula will be balanced.
The number of days is 10 if, on a poultry farm, 50 hens give 200 eggs in 2 days.
<h3>What is the ratio?</h3>
It is described as the comparison of two quantities to determine how many times one obtains the other. The proportion can be expressed as a fraction or as a sign: between two integers.
It is given that:
On a poultry farm, 50 hens give 200 eggs in 2 days.
It is required to find the number of days will 20 hens require to give 400 eggs:
Let x be the number of days:
(50×2)/200 = (20x)/400
x = 10
Thus, the number of days is 10 if, on a poultry farm, 50 hens give 200 eggs in 2 days.
Learn more about the ratio here:
brainly.com/question/13419413
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10. 4y + 2
11. 7x
i will put the other two in a bit something happened to my thing that it only lets me write some things
