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Ilya [14]
2 years ago
7

Bari oxit có công thức hóa hóa học là BaO . vậy bari oxit được tạo nên từ các nguyên tố

Chemistry
1 answer:
Softa [21]2 years ago
6 0

Answer:

Bari oxit được tạo nên từ các nguyên tố Bari (Ba) và Oxi (O)

Explanation:

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Given the following partial (valence-level) electron configurations,<br> (a) identify each element,
Kamila [148]

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<h3>What is the difference between electron configuration and valence electron configuration?</h3>

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4 0
2 years ago
Proper significant figure: 27.01 + 14.369
Paul [167]

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<h2>put the bigger number on top then add </h2>

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8 0
3 years ago
If a substance has a half-life of 55.6 s, and if 230.0 g of the substance are present initially, how many grams will remain afte
Assoli18 [71]

Answer:

m=0.127g

Explanation:

Hello,

In this case, for a first-order reaction, we can firstly compute the rate constant from the given half-life:

k=\frac{ln(2)}{t_{1/2}} =\frac{ln(2)}{55.6s}=0.0125s^{-1}

In such a way, the integrated first-order law, allows us to compute the final mass of the substance once 10.0 minutes (600 seconds) have passed:

m=m_0*exp(-kt)=230.0g*exp(-0.0125s^{-1}*600s)\\\\m=0.127g

Best regards.

6 0
3 years ago
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