Round your answer to the nearest tenth, when appropriate. Use the formula $\mathrm { pH } = - \log \left[ \mathrm { H } _ { 3 } \mathrm { O } ^ { + } \right]$ , as
needed.
-Find the pH if $\left[ \mathrm { H } _ { 3 } \mathrm { O } ^ { + } \right] = 7.9 \times 10 ^ { - 3 }$ .
A) 3.1
B) 3.9
C) 2.9
D) 2.1

Question

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The Answer of Round your answer to the nearest tenth, when appropriate. Use the formula $\mathrm { pH } = - \log \left[ \mathrm { H } _ { 3 } \mathrm { O } ^ { + } \right]$ , as
needed.
-Find the pH if $\left[ \mathrm { H } _ { 3 } \mathrm { O } ^ { + } \right] = 7.9 \times 10 ^ { - 3 }$ .
A) 3.1
B) 3.9
C) 2.9
D) 2.1

Round Your Answer to the Nearest Tenth, When Appropriate pH=−log⁡[H3O+]\mathrm { pH } = - \log \left[ \mathrm { H } _ { 3 } \mathrm { O } ^ { + } \right]pH=−log[H3​O+]

Round Your Answer to the Nearest Tenth, When Appropriate $\mathrm { pH } = - \log \left[ \mathrm { H } _ { 3 } \mathrm { O } ^ { + } \right]$