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Nikolay [14]
3 years ago
15

A washing powder contains sodium hydrogencarbonate

Chemistry
1 answer:
Vladimir [108]3 years ago
3 0
False.
Washing soda is sodium carbonate(Na₂CO₃).
Baking soda is sodium hydrogen carbonate(NaHCO₃).
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Answer: A) Sodium Na and Magnesium Mg

Explanation:

In the period table, you can see that Sodium (group 1) has 11 protons, and Magnesium (group 2) has 12 protons. 11+12=23 protons

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Ionic compound is formed by negative and positive ions, these ions form ionic bond
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A heptagon has six sides.<br> a. True<br> b. False
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B) False- It has seven
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2. Calculate the joules of energy required to heat 454.3g of water<br> frum 5.4°C to 98.6°C.
Tasya [4]

Answer:

176984.38J

Explanation:

E = mC∆T

Where E is the energy in joules

M is the mass of water

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It is known that it will take 4.184J of energy to change the temperature of water by one degree Celsius.

∆T = 98.6°c - 5.4°c

= 93.2°c

∆H = 454.3g × 4.18J/g°C × 93.2°c

= 176984.3768

176984.38J

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