1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
viktelen [127]
3 years ago
7

33 protons 36 electrons 45 neutrons

Chemistry
1 answer:
Artist 52 [7]3 years ago
6 0

As has an atomic number of 33, so it has 33 protons.  

It has a charge of 3-, so there are three more electrons than protons. Thus, there are 36 electrons.  

It has a mass of 75, which is the sum of neutrons and protons.  

33+n=75 ---> n = 75 - 33 = 42 neutrons  

The answer is e) 33 protons, 42 neutrons and 36 electrons.

You might be interested in
6. A piece of solid gold was heated from 274K to 314K. 35.73 of energy was needed to raise the temperature.
ivanzaharov [21]

From Q = mcΔT, we can rearrange the equation to solve for mass, m = Q/cΔT. The specific heat capacity, c, of solid gold is 0.129 J/g °C. I'm assuming that the energy is given in joules, as it's not specified in the question as written.

m = Q/cΔT = (35.73 J)/(0.129 J/g °C)(40.85 °C - 0.85°C)

m = 6.92 g of gold was present  

5 0
3 years ago
One element of the circulatory system is the __________.
IrinaK [193]
The answer is heart

good luck!
4 0
3 years ago
Read 2 more answers
0.200 grams of HCl is dissolved in 0.801 grams water. The density of the solution formed is 1.10 g/mL. What is the molarity of t
alina1380 [7]

Answer:

M=6.03M

Explanation:

Hello,

In this case, since the molarity is computed by:

M=\frac{n_{solute}}{V_{solution}}

Whereas the solute is the hydrochloric acid, we compute the corresponding moles with its molar mass (36.45 g/mol):

n_{solute}=0.200gHCl*\frac{1molHCl}{36.45gHCl} =0.00549molHCl

Next, since the solution contains both HCl and water, we compute the volume in liters by using its density:

V_{solution}=(0.200+0.801)g*\frac{1mL}{1.10g} *\frac{1L}{1000mL} =9.1x10^{-4}L

Therefore, the molarity turns out:

M=\frac{0.00549mol}{9.1x10^{-4}L}\\ \\M=6.03M

Regards.

6 0
3 years ago
What mass of carbon dioxide gas occupies a volume of 8.13 L
Natasha_Volkova [10]

Answer:

23.76g

Explanation:

To solve for the mass of carbon dioxide (CO2), let us first obtain the number of mole of CO2.

From the question, the following were obtained:

V = 8.13L

P = 204kPa = 204000Pa

Recall: 101325Pa = 1atm

204000Pa = 204000/101325 = 2atm

T = 95°C = 95 + 273 = 368K

R = 0.082atm.L/K/mol

n =?

PV = nRT

n = PV /RT

n = 2 x 8.13/ 0.082 x 368

n = 0.54mole

Now let us convert 0.54mole of CO2 to gram. This is illustrated below:

Molar Mass of CO2 = 12 + (16x2) = 12 + 32 = 44g/mol

Number of mole of CO2 = 0.54mole

Mass of CO2 =?

Number of mole = Mass /Molar Mass

Mass = number of mole x molar Mass

Mass of CO2 = 0.54 x 44

Mass of CO2 = 23.76g

7 0
3 years ago
What is the core charge of helium and why?
dalvyx [7]

Answer:

Formula for effective nuclear charge is as follows. So, for He atom value of S = 0.30 because the electrons are present in 1s orbital. Therefore, calculate the effective nuclear charge for helium as follows. Thus, we can conclude that the effective nuclear charge for helium is 1.7

Explanation:

The effective nuclear charge experienced by a 1s electron in helium is +1.70.

7 0
3 years ago
Other questions:
  • In a blast furnace, iron(III) oxide is used to produce iron by the following (unbalanced) reaction. Fe2O3(s) + CO(g) Fe(s) + CO2
    8·1 answer
  • Tartaric acid is the white, powdery substance that coats sour candies such as sour patch kids. combustion analysis of a 12.01-g
    13·1 answer
  • For the reaction 2 HCl + Na2CO3 → 2 NaCl + H2O + CO2 8.0 moles of CO2 is collected at STP. What is the volume of CO2? 1. 57.6 L
    5·1 answer
  • Which of the following is not a type of fault?
    6·1 answer
  • Why is Mendeleev's suggestions best accepted in the construction of the periodic table​
    8·1 answer
  • How many liters are equivalent to 12 US gallons?
    12·2 answers
  • What produced the sulfuric acid that helped form the Lechugilla caves
    9·1 answer
  • I need help answer with right answer
    14·1 answer
  • -
    8·1 answer
  • the reaction between nitrogen and hydrogen to produce ammonia is described by the following equilibrium reaction. 3h2 n2↽−−⇀2nh3
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!