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4 years ago

The SI unit of weight is the same as that of force. What does this tell us about weight? Explain.

Chemistry

1 answer:

masya89 [10]4 years ago

5 0

Answer:

It shows that weight is a form of force.

Explanation:

Basically, weight is the force exerted by your mass multiplied by the gravitational acceleration of the place you're standing in.

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Assume human blood is iso-osmotic or isotonic with a 0.16 mol/lit saline (NaCl) solution (the solution does not change the volum

const2013 [10]

Answer:

π = 4.1 atm

Explanation:

We can calculate the osmotic pressure exerted by a solution using the following expression.

π = M . R . T

where,

π is the osmotic pressure

M is the molar concentration of the solution

R is the ideal gas constant

T is the absolute temperature

The absolute temperature is 37 + 273 = 310 K

π = M . R . T

π = (0.16 mol/L) . (0.082atm.L/mol.K) . 310 K = 4.1 atm

8 0

4 years ago

Which element in period 4 would have chemical properties similar to magnesium? 7. which metalloids would have chemical propertie

azamat

The only solution you'll need to have for this problem is a periodic table. The columns in the table are called groups, and they are number from the left to the right starting with 1. The rows in the table are called periods which are numbered from the top to bottom starting with 1.

6. Elements that belong to the same group portray similar chemical properties. Therefore, the element in period 4 which is also in group 2 is Calcium (Ca).

7. The elements that are striked through with the red slanting lines are the metalloids. All the elements to the left of the metalloids are metals. All the elements to the right are nonmetals. Bromine has a symbol of Br. Since At is a metalloid and located in the same group with Br, the answer is Astatine (At).

8. Tin has the chemical symbol of Sn. The nonmetal that is located in the same group is Carbon (C).

9. All the elements in period 6 would have similar properties. The answers could be: Phosphorus (P), Arsenic (As), Antimony (Sb) and Bismuth (Bi).

10. Period is row 1 and group 18 is the last column. The answer is Helium (He).

5 0

3 years ago

Read 2 more answers

Fires are classified into various classes and as such different types of portable fire extinguishers must be used. The theory be

Dimas [21]

Answer:

Explanation:

ABC Powder: sprays a very fine chemical powder. This acts to blanket the fire and suffocate it. Class A, B, C fires

Carbon dioxide: extinguishes CO2. By doing so, it removes oxygen from the fire, effectively suffocating it of oxygen. Class B fires

Foam: spray a type of foam that expands when it hits the air and blankets the fire. This prevents the vapors from rising off the liquid to feed the fire, thus starving it of fuel. Class A and B

Water: releases microscopic water molecules that fight the fire on a variety of levels. the level of oxygen in the air is decreased, which helps to suffocate the fire. Class: most all

also, your fire classes:

Class A: freely burning, combustible solid materials such as wood or paper

Class B: flammable liquid or gas

Class C: energized electrical fire (energized electrical source serves as the ignitor of a class A or B fire – if electrical source is removed, it is no longer a class C fire)

Class D: metallic fire (titanium, zirconium, magnesium, sodium)

Class K: cooking fires – animal or vegetable oils or fats

7 0

3 years ago

Definition of fluid friction

tester [92]

Answer:

Fluid friction describes the friction between layers of a viscous fluid that are moving relative to each other

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5 0

3 years ago

100cl 1kl which is greater

allsm [11]

Answer: = 0.01

Explanation:1 centiliters = 0.01 liters using the online calculator for metric conversions.

4 0

2 years ago