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Vitek1552 [10]
4 years ago
7

Please help What is an element

Chemistry
2 answers:
Vitek1552 [10]4 years ago
7 0
Protons and electrons and others
Sav [38]4 years ago
4 0

Answer:

An element is atoms with the same number of protons.

Explanation:

Protons, electrons, and neutrons.

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Which substance exists as a molecular compound? a sulfate ion, calcium chloride, methanol, oxygen
Viktor [21]
The substance would be:Methanol (ch40)
5 0
3 years ago
Read 2 more answers
How is a gas affected when pressure temperature or volume change
Tanzania [10]

Answer:

The volume of a given gas sample is directly proportional to its absolute temperature at constant pressure (Charles's law). The volume of a given amount of gas is inversely proportional to its pressure when temperature is held constant (Boyle's law).

Explanation:

5 0
3 years ago
correctly complete the following statement: The side chains ('-R groups') of amino acids in a beta-sheet: A. alternate pointing
Arlecino [84]

Answer:

A.  

Explanation:

The β-sheet is a twisted pattern in which the protein strands are laterally linked through hydrogen bonds. These β-sheet motifs are segments of 3 to 10 amino acids that are specially configured to form beta antiparallel strands. In β-sheet regions, the hydrogen bonds are localized among carbonyl and amino groups of the polypeptide backbone, and side chains (i.e., the R groups) are extended up and down in the plane of the β-sheet.

6 0
3 years ago
One way to remove the pollutant nitrogen monoxide, NO, from mobile diesel exhaust is by reacting it with ammonia, NH, as seen in
SSSSS [86.1K]

Answer:

m_{NH_3}=21.6gNH_3

Explanation:

Hello there!

In this case, in agreement to the given chemical reaction, it is possible for us to calculate the mass of NH3 required to remove 57.0 g NO via the stoichiometry based off the 4:6 mole ratio between them:

m_{NH_3}=57.0g NO*\frac{1molNO}{30.01gNO}*\frac{4molNH_3}{6molNO}  *\frac{17.03gNH_3}{1molNH_3} \\\\m_{NH_3}=21.6gNH_3

Best regards!

6 0
3 years ago
If an object has two forces acting on it how can the next force equal 0
Flura [38]

If the forces are equal and in opposite directions, the net force will equal zero.

Consider a tug-of-war team. If they are pulling with equal forces against each other, the red cloth on the rope will not move.

<em>F = ma </em>

The cloth is not moving, so <em>a = </em>0 and the net force <em>F = </em>0.

6 0
4 years ago
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