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Mazyrski [523]
3 years ago
5

Question 11 (1 point)

Chemistry
1 answer:
iren2701 [21]3 years ago
6 0
Blue to red is acidic, red to blue is basic and no change is neutral.
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1.008 I am Very sure We just learned this..
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Which planet experiences the smallest range of temperatures?
aleksandr82 [10.1K]

B - Venus

The planet Venus experiences the smallest range of temperature of any planet in our solar system.

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3 years ago
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PLEASE HELP ME ANSWER THESE QUESTIONS!
madam [21]

Answer:

1. 0.35 moles NaOH

2. 5.10x10^{-4} moles H_2SO_4

3. 505.4 g Pb

4. 1.46 g HCl (if that is wrong it's 1.5 g HCl due to sig figs)

5. 3.01x10^{23} atoms of Ag

6. 2x10^{-10} atoms of Cu

Explanation:

1. The mass of NaOH is 40g. 22.99(Na)+16(O)+1.01(H)=40 g

14 g NaOH *\frac{1 mol NaOH}{40 g NaOH} = 0.35 moles of NaOH

2. Mass of H_{2} SO_{4} = 2(1.01)+32.06+4(16) = 98.08

0.05 g H_2SO_4 ×\frac{1 mol H_2SO_4}{98.08g H_2SO_4} = 5.10 x10^{-4}

3. mass of Pb = 106.4 g

4.75 moles Pb×\frac{106.4 g Pb}{1 mol Pb} =505.4 g Pb

4. mass of HCl = 1.01 +35.45 = 36.36 g

0.04 mol HCl x \frac{36.46 g HCl}{1 mol HCl} = 1.456 = 1.5

5. 5.00 mol Ag x\frac{6.022x10^{23} atoms }{1mol Ag} = 3.01x10^{24} atoms

6. 3x10^{-10} moles Cu x\frac{6.022x10^{23} atoms}{1 mol Cu} = 1.8668x10^{14}= 2x10^{14} atoms of Cu

8 0
2 years ago
The density of iron= 7.86 g/cm^3, what is the volume of 150g of iron
nadezda [96]

Answer: 19.08 cm^3

Explanation:

Density = mass/vol (Rearrange to solve for vol)

Vol = mass/density

Vol = 150/7.86 = 19.08 cm^3

7 0
3 years ago
A 150-lb patient is prescribed acetaminophen at 7.34 mg/kg. If acetaminophen is available on hand as a 0.125 mg/ml syrup, how ma
valentinak56 [21]

Answer:

The nurse should administer 3995.2 millilitres of syrup.

Explanation:

The conversion factor of pound weight to kilogram is; <em>1 lb = 0.453592 kg</em>

The body weight of the patient in Kg = 150 * 0.453592 = 68.04 kg

A prescription of 7.34 mg/kg acetaminophen means that he should receive;

7.34 mg * 68.04 = 499.4 mg of acetaminophen

Amount in grams of acetaminophen per millilitre of syrup = 0.125 mg

Number of millilitres of syrup required = 499.4 mg / 0.125 mg/mL = 3995.2 mL

Therefore, the nurse should administer 3995.2 millilitres of syrup.

5 0
2 years ago
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