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zhannawk [14.2K]
3 years ago
7

Bhumi meri dost ban gai

Chemistry
2 answers:
chubhunter [2.5K]3 years ago
8 0

Answer:

hii Hashmi how are u dear...

Aloiza [94]3 years ago
7 0

Answer:

congratulations☺☺☺

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The average blood volume in the human body is about 4.9 L. Convert this volume to cubic centimeters (cm3).a. milliliters (mL)b.
CaHeK987 [17]

Answer:

a. 4900 mL; b. 4900 cm³ c. 4.9x10⁻³  m³

Explanation:

1 L = 1 dm³

4.9 L = 4.9 dm³

1 dm³ = 1000 cm³  → 4900 cm³

1 cm³ = 1 mL  (4900 mL)

1 dm³ = 1x10⁻³ m³ → 4.9x10⁻³  m³

6 0
3 years ago
THIS IS SCIENCE What the metric base unit for length.
kozerog [31]

Length: The most common units that we use to measure length in the metric system are the millimeter, centimeter, meter, and kilometer. The millimeter is the smallest commonly used unit in the metric system

Mass: Kilogram.

Liquid volume: The basis of fluid volume units for the metric system is the liter. A liter is about the same as one quart.

  • The independent variable in an experiment is the variable whose value the scientist systematically changes in order to see what effect the changes have.
  • A dependent variable is what the experimenter observes to find the effect of systematically varying the independent variable.
  • Experimental constants are values that do not change either during or between experiments.
  • A controlled variable is a variable that could change, but that the experimenter intentionally keeps constant in order to more clearly isolate the relationship between the independent variable and the dependent variable.

(And psa. don't lie to people about the points earned!)

7 0
3 years ago
Suppose the reaction between nitric oxide and bromine proceeds by the following mechanism: step elementary reaction rate constan
Oksana_A [137]

Answer:

Koverall [NO]^2 [Br2]

Balanced chemical reaction equation;

2NO + Br2 ⇄2NOBr

Explanation:

Consider the first step in the reaction;

NO(g) + Br2(g) ⇄ NOBr2(g) fast

The second step is the slower rate determining step

NOBr2(g) + NO(g) ⇄ 2NOBr(g)

Given that k1= [NOBr2]/[NO] [Br2]

k2= [NOBr2] [NO]

The concentration of the intermediate is now;

[NOBr2]= k1[NO][Br2]

It then follows that overall rate of reaction is

Rate= k1k2[NO]^2 [Br2]

Since k1k2=Koverall

Rate= Koverall [NO]^2 [Br2]

8 0
3 years ago
Please help!!!! Thank you
Lelu [443]
What do you need help with?
8 0
4 years ago
given that 32.0g sulphur contains 6.02×10^23 sulphur atoms,how many atoms are there in 2.70g of aluminum​
dangina [55]

Answer:

6.022 × 10²² atoms

Explanation:

Generally 1 mol of any element contains 6.02×10^23  atoms. The number 6.022 × 10²³ is known as Avogadro's number.

Mass of Aluminium = 2.70g

Molar mass = 27g/mol

Number of moles = Mass / Molar mass = 2.70 / 27 = 0.1 mol

1 mol =  6.022 × 10²³

0.1 mol = x

x = 6.022 × 10²³ * 0.1 = 6.022 × 10²² atoms

5 0
3 years ago
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