The most important thing to do right away if a student spills HCL on his shirt would be to remove the shirt and rinse the skin with water in case the HCL soaked through.
Answer:
There needs to be a 2 in front of O2.
Explanation:
That would make 4 oxygen atoms and would balance the number of atoms and mass on each side. And, in a balanced chemical equation, mass and atoms are always conserved.
Protozoa are single-celled eukaryotes that share some traits with animals. Like animals, they can move, and they are heterotrophs. That means they eat things outside of themselves instead of producing their own food
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Answer:</h2>
the measured abundances of elements, the observed expansion of space, and the discovery of the cosmic microwave background 'CMB'. The CMB refers to the uniform distribution of radiation that pervades the entire universe.
