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Aleks [24]
3 years ago
6

I really need help with it’s I don’t get it

Chemistry
1 answer:
8090 [49]3 years ago
3 0

Explanation:

1. Chart shows the annual state spending in percentages, like on things to benefit both them and the public.

2. Estimate that the total is 50,000 spent. Multiply that by 0.07 for the 7% spent on highways. You get 3,500 total.

3. Add the total from the previous problem with the budget of 50,000 multiplied by 0.14 to find 14% of the entire budget. You have 3,500 for 7%, and 7000 for 14%. Add them together to get a total of 10,500.

4. A. They spend the most on other, a whopping 45%.

B. The chart shows the total percentages of the amount spent.

5. No. The graph has nothing to do with age.

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At what pressure would 11.1 moles of a gas occupy 44.8 L at 300 K?
faltersainse [42]

Answer:

P=6.10atm

Explanation:

Hello,

In this case, we can study the ideal gas equation that relates temperature, volume, pressure and moles as shown below:

PV=nRT

Thus, since we are asked to compute the pressure y simply solve for it as follows:

P=\frac{nRT}{V}=\frac{11.1mol*0.082\frac{atm*L}{mol*K}*300K}{44.8L}\\  \\P=6.10atm

Best regards.

5 0
3 years ago
Before the development of electrophoresis to separate macromolecules, ____________ was used.
max2010maxim [7]

Before the development of electrophoresis to separate macromolecules, high-speed centrifugation was used to isolate DNA.

A laboratory procedure called electrophoresis is used to divide DNA, RNA, or protein molecules according to their size and electrical charge. The molecules are moved by an electric current through a gel or other matrix. The technology of electrophoresis is crucial for the separation and examination of nucleic acids. At the lab bench, cloned DNA fragments are frequently isolated and worked with using nucleic acid electrophoresis.

High-speed centrifugation employs centrifugal force to separate particles with various densities or masses suspended in a liquid. High-speed rotation of the solution inside the tube causes each particle's angular momentum to experience centrifugal forces inversely proportionate to its mass.

To know more about electrophoresis refer to: brainly.com/question/28709201

#SPJ4

4 0
2 years ago
all my points! Calculate the change in free energy if 1.12 moles of Nal is dissolved in water at 25.0°C.​
Vaselesa [24]

Answer:

Free energy change is -7.500248 kJ/mol

Explanation:

If we have the enthalpy change and entropy change, we can find the free energy change using the equation,

ΔG = ΔH - TΔS

Temperature in K = 25°C + 273 = 298 K

ΔH for NaI = -7.50 kJ/mol

ΔS for NaI = 74 J/K mol = 0.074 kJ/K mol

Plugin the above values in the equation, we will get,

ΔG  =  -7.5 kJ/mol - 0.074 kJ/K mol / 298 K

    = -7.5 kJ/mol - 0.000248 kJ/mol

  = -7.500248 kJ/mol

7 0
3 years ago
Read 2 more answers
The protons of an atom are (2 points)
IgorLugansk [536]

positively charged and located inside the nucleus

6 0
3 years ago
What size volumetric flask would you use to create a 0.50 M<br> solution using 10.00 g of CaBr2
SIZIF [17.4K]

Answer:

Explanation:

First convert the grams of Calcium Bromide to moles by using the atomic weight. Then use the formula for molarity, which is moles per liter.

CaBr2 = 199.9 g/mol

10/199.9 = 0.05 moles of CaBr2

0.5M=\frac{0.05mol}{x}

x = 0.1L or 100mL

5 0
3 years ago
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