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dmitriy555 [2]
3 years ago
12

What metal is present in brass?

Chemistry
1 answer:
yulyashka [42]3 years ago
3 0

Answer:

brass is an alloy of copper and zinc which results into hardness.

hope it helps you!!

You might be interested in
2FeCl3 + MgO -&gt; Fe2O3 + 3MgCl2<br> Convert 3.00 moles of MgO to moles of Fe2O3
nikitadnepr [17]

71.8 g of iron (III) oxide (Fe₂O₃) were produced from 3 moles of magnesium oxide (MgO).

Explanation:

We have the following chemical reaction:

2 FeCl₃ + 3 MgO → Fe₂O₃ + 3 MgCl₂

We see from the chemical reaction that 3 moles of magnesium oxide (MgO) will produce 1 mole of iron (III) oxide (Fe₂O₃).

number of moles = mass / molar weight

mass = number of moles × molar weight

mass of Fe₂O₃ = 1 × 71.8 = 71.8 g

Learn more about:

number of moles

brainly.com/question/13981579

#learnwithBrainly

6 0
3 years ago
An unknown solid is placed on a triple beam balance and has a mass of 2.5 grams. The solid then displaces 35 ml of water in a gr
Aleksandr [31]

Answer:

A

Explanation:

your welcome

6 0
3 years ago
Read 2 more answers
Given the solutes NaCl and I2 and the solvents NH3(ℓ) and C7H16 (heptane), which is true?
stiks02 [169]

Answer:

NaCl is more soluble in NH3 and I2 is more soluble in C7H16

Explanation:

Polar substances are likely to dissolve in polar solvents. For example, ionic compounds, which are very polar, are often soluble in the polar solvent water. Nonpolar substances are likely to dissolve in non-polar solvents.For example, ionic compounds are insoluble in hexane.

In the above example NaCl is a polar compound made up of ions Na^{+}  and \text{ }cl^{-} so it is soluble in polar compounds like ammonia (NH3),where as I2 is a non-polar solid so it is soluble in non-polar solvents like n-heptane(C7H16).

7 0
3 years ago
Os subníveis mais energéticos de um dado átomo são: ...4s2 3d10 4p5 a) indique o seu número atomico b) quantos electrões de valê
givi [52]

Answer:

A. 35

B. 7

C. halogênios

Explanation:

Aqui, para responder a essa pergunta, precisaremos conhecer o elemento particular em questão.

..... 4s ^ 2 3d ^ 10 4p ^ 5 significa que está a cinco elétrons da configuração eletrônica do último elemento na primeira camada dos metais pesados.

O último elemento da 1ª série do elemento de transição é o zinco, portanto, como está a apenas 5 elementos de distância, o átomo de que estamos falando é o átomo de Bromo de Bromo.

A. O zinco tem um número atômico 30 e como o bromo está a 5 elementos de distância, seu número atômico é 35

B. Uma vez que pertence ao grupo halogênio, tem 7 elétrons de valência como o resto da família

C. Pertence à família dos halogênios

7 0
3 years ago
Write a symbolic notation of an isotope of an element having 8 protons 8 electrons and 10 neutrons
Bezzdna [24]

Answer:

                       ¹⁸₈O

Explanation:

                     The symbolic notation of an isotope of an element is generally written as;

                                                  ᵃₙX

Where;

                 a  =  Mass Number

                 n  =  Atomic Number

                 X  =  Element Symbol;

Mass number is the sum of neutrons and protons present in the nucleus. It is given as,

Mass Number  =  No. of Protons  +  No. of Neutrons

As Given

                 Mass  Number  =  8 + 10

                 Mass  Number  =  a  =  18

Also,

Atomic Number is defined as the number of protons contained in the nucleus of an atom. Hence, in this case;

                 Number of Protons = Atomic Number = n = 8

Also, the element with atomic number 8 in periodic table is Oxygen. Hence;

                 X  =  O

Therefore, The symbolic notation for given element is ¹⁸₈O.

7 0
4 years ago
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