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natta225 [31]
3 years ago
8

I dentify this element by its symbol and name

Chemistry
2 answers:
Mariana [72]3 years ago
8 0

Answer:

the symbol is He

Explanation:

Helium

vlabodo [156]3 years ago
3 0

Answer:

See the answer and explanation below, please.

Explanation:

It corresponds to the element Helium, whose symbol is He. This element has an atomic number 2 (number of electrons = number of protons) and mass number 4 (sum of neutrons and protons).

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The process is called decay.
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Vladimir79 [104]

Answer:

I think the answer might be D. but im not 100 percent sure

Explanation:

5 0
3 years ago
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A 12.0g sample of a substance requires 50.9 J to raise its temperature by 6.00 c. What is it’s specific heat
horsena [70]

\qquad\qquad\huge\underline{{\sf Answer}}

Let's find the specific heat of sample using given formula :

\qquad \tt \dashrightarrow \:Q = m \: s \triangle T

where,

  • Q = heat transfer

  • m = mass

  • S = specific heat

  • \tt \triangle T = change in temperature

\qquad \tt \dashrightarrow \:50.9 = 12 \times \: s  \times 6

\qquad \tt \dashrightarrow \:s =  \dfrac{50.9}{72}

\qquad \tt \dashrightarrow \:s = 0.707  \:

Therefore, specific heat of that substance is 0.707 J/g°C

7 0
2 years ago
An emulsifying agent is typically characterized by having ____. a. one polar end c. two polar ends b. one nonpolar end d. one po
tangare [24]

Answer:

An emulsifying agent is typically characterized by having <u><em>d. one polar end and one nonpolar end.</em></u>

Explanation:

Emulsifiers are substances that have the ability to bind, for example, fats with those substances that have mostly water in their conformation. In other words, the emulsifier facilitates mixtures of two or more immiscible liquid substances.

This is because the molecules of an emulsifier are often lipophilic (attract oil) at one end and hydrophilic (attract water) at the other. In other words it consists of a polar (hydrophilic) head group and a non-polar (hydrophobic) tail.

<u><em>An emulsifying agent is typically characterized by having d. one polar end and one nonpolar end.</em></u>

4 0
3 years ago
Pb(NO3)2 + NH4Cl = PbCl2 + NH4NO3<br> how do i balance this??
Elden [556K]

Answer:

We have NH 4 and that's called the ammonium ion it also stays together.

Explanation:

7 0
3 years ago
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