Which of the following is an example that includes evidence of a chemical reaction?

How many atoms of Oxygen (O) are there in the products of the following equation:

xenn [34]

Answer:

4.

You see, 2 atoms of O in the CO₂ and 2 O in the 2 moles of H₂O

Explanation:

CH₄ + 2O₂ → CO₂ + 2H₂O

8 0

3 years ago

Which of the following pairs of elements would most likely combine to form a salt?

Delvig [45]

B.sodium and aluminum

4 0

3 years ago

In transduction, the cochlea is part of this structure:and the retina is part of this structure:

KengaRu [80]

Answer:

loooooooooooooooooooooooooolzzzz

Explanation:

5 0

2 years ago

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HELP WITH THIS ASAP PLEASE!!! What is the mass in grams of 8.42 x 10^22 atoms of sulfur?

V125BC [204]

Answer:

Answer:

see explanation and punch in the numbers yourself ( will be better for your test)

Explanation:

If you are given atoms you need to divide by Avogadro's number 6.022x10^23

then you will have moles of sulfur-- once you have moles multiply by the molar mass of sulfur to go from moles to grams

mm of sulfur is 32 g/mol

5 0

2 years ago

Can someone help me please

MArishka [77]

Answer:

Group 4A (or IVA) of the periodic table includes the nonmetal carbon (C), the metalloids silicon (Si) and germanium (Ge), the metals tin (Sn) and lead (Pb), and the yet-unnamed artificially-produced element ununquadium (Uuq).

The Group 4A elements have four valence electrons in their highest-energy orbitals (ns2np2). Carbon and silicon can form ionic compounds by gaining four electrons, forming the carbide anion (C4-) and silicide anion (Si4-), but they more frequently form compounds through covalent bonding. Tin and lead can lose either their outermost p electrons to form 2+ charges (Sn2+, the stannous ion, and Pb2+, the plumbous ion) or their outermost s and p electrons to form 4+ charges (Sn4+, the stannic ion, and Pb4+, the plumbic ion).

Carbon (C, Z=6).

Carbon is most familiar as a black solid is graphite, coal, and charcoal, or as the hard, crystalline diamond form. The name is derived from the Latin word for charcoal, carbo. It is found in the Earth's crust at a concentration of 480 ppm, making it the 15th most abundant element. It is found in form of calcium carbonate, CaCO3, in minerals such as limestone, marble, and dolomite (a mixture of calcium and

Explanation:

THIS ALL I KNOW

ENJOY THE ANSWER

3 0

2 years ago