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pishuonlain [190]
3 years ago
14

An element has 13 protons in its nucleus. What is its atomic number?

Chemistry
2 answers:
Dafna11 [192]3 years ago
6 0

Answer:

The answer is 13.

Explanation:

In an element, proton number is also define as atomic number. So if the element has 13 protons, it's atomic number will be 13.

-BARSIC- [3]3 years ago
6 0
Atom has 13 protons
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Which island is older Kauai or Maui
evablogger [386]

Answer:

Kauai

Explanation:

I look this up when I am doing math

5 0
2 years ago
A stover-to-ethanol plant produces 40,000 tonne/yr of ethanol and contains 8functionalunits:feedstockhandling,pretreatment,simul
Step2247 [10]

Answer:

FCI=458000*8*40000^{0.3}\\FCI=880818398.52 M

FCI=88.0818 MM≅88 MM

Explanation:

Empirical correlation based on the work of Bridgwater and Mumford (1979):

For Liquid or solid phase Plants:

FCI=458000*N*F^{0.3}                       F<60,000 tonne/yr     Eq (1)

FCI=7000*N*F^{0.68}                         F≥60,000 tonnes/yr   Eq (2)

Where:

N is the number of functional units

F is the process throughput tonnes/yr

In our case F=40,000 tonne/yr <60,000 tonne/yr, We are going to use Eq (1)

FCI=458000*N*F^{0.3}                       F<60,000 tonne/yr

N=8, F=40,000 tonne/yr

FCI=458000*8*40000^{0.3}\\FCI=880818398.52 M

FCI=88.0818 MM≅88 MM

8 0
3 years ago
1. 750 x 10^3 ng to g​
Temka [501]

Answer:

1.750×10^-6 g

Explanation:

we know n is 10^-9. all you have to do is to replace n with 10^-9.

so the answer is

1.750×10^3×10^-9 g

which is equal to 1.750×10^-6 g

if anything is unclear, ask freely.

4 0
2 years ago
Which boundary can pruduce earthquakes and which can produce the largest earthquake
alexdok [17]
All I know us the San Andreas fault line. That earthquake is far overdo
3 0
3 years ago
Read 2 more answers
A saturated solution of calcium hydroxide contains 1.85 g of solute in 100. mL of solution. What is its molarity
Leona [35]

Answer:

M=0.250M

Explanation:

Hello!

In this case, since the molarity of a solution is computed by dividing the moles of solute by the volume of solution in liters, we first need to compute the moles of solute knowing that the molar mass of calcium hydroxide is 74.1 g/mol as follows:

n=1.85g*\frac{1mol}{74.1g}=0.0250mol

Next, since the 100-mL solution is also expressed in liters by 0.100 L, we directly compute the molarity as shown below:

M=\frac{0.0250mol}{0.100L}\\\\M=0.250M

Which is expressed in molar units that are mol/L.

Best regards!

8 0
3 years ago
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