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crimeas [40]
3 years ago
6

WRITING AND BALANCING EQUATIONS

Chemistry
1 answer:
Natasha2012 [34]3 years ago
4 0

Answer:

CaCO3 + 2HCl —> CaCl2 + CO2 + H2O

Explanation:

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Which term refers to a variable that isn’t allowed to change during an experiment?
Citrus2011 [14]
D) dependent variable
6 0
2 years ago
Identify the type of sugar corresponding to each name. Sucrose Choose... Fructose Choose... Lactose Choose... Glucose Choose...
sergey [27]

Answer: Please see answers in explanation column

Explanation:

Name                Type of sugars

Sucrose               Disaccharide

Sucrose, also called table sugar with molecular formulae C12H22O11  is a disaccharide  composed of two monosaccharides ( 50%glucose + 50%  fructose.).

Lactose                 Disaccharide

Lactose with molecular formula C12H22O11, found in milk is a disaccharide composed of two monosaccharides (galactose and glucose).

Fructose                 Monosaccharide  

Fructose with molecular formulae C6H12O6 is a natural sugar mostly found in fruits.

Starch                  Polysaccharide

Starch ,a complex carbohydrate with molecular formula  (C6H10O5)n,  is a Polysaccharide containing many  units of glucose joined together by 1,4 linkages. Sources of starch can be found in the parts of plants( roots, tubers etc).

Glucose                 monosaccharides

Glucose, is a simple sugar (monosaccharides) with the molecular formula C6H12O6.  It is found in parts of plants  as well as in humans and known as blood sugar because of its location in the bloodstream.

7 0
1 year ago
What are two substances that are useful because of their viscosity? (Please describe why they are useful)
Sholpan [36]

Answer:

The two substances are Grease and Oil.

Explanation:

- <u>Grease</u> is used for other lubrication outside of the engine when it is really cold.

- <u>Oil</u> is used for lubricating when your engine is really hot.

6 0
3 years ago
What does geotropism enable plants to do
LUCKY_DIMON [66]

Answer:

Growing toward gravity is called geotropism. Plants also exhibit phototropism, or growing toward a light source. This response is controlled by a plant growth hormone called auxin. As shown in Figure below, auxin stimulates cells on the dark side of a plant to grow longer.

Explanation:

Hope this helps and have a great day :)

6 0
2 years ago
A 7.0 L sample of gas begins at 2.5 atm and 320. K. What is the new pressure if the temperature is changed to 273 K and the volu
enyata [817]

Answer:

2.1 atm

Explanation:

We are given the following variables to work with:

Initial pressure (P1): 2.5 atm

Initial temperature (T1): 320 K

Final temperature (T2): 273 K

Constant volume: 7.0 L

We are asked to find the final pressure (P2). Since volume is constant, we want to choose a gas law equation that relates initial pressure and temperature to final pressure and temperature. Gay-Lussac's law does this:

\frac{P_{1}}{T_1} =\frac{P_{2}}{T_2} \\

We can rearrange the law algebraically to solve for P_{2}.

{P_{2}} =\frac{(T_2)(P_{1} )}{T_1} \\

Substitute your known variables and solve:

P_2 = \frac{273K(2.5atm)}{320K}  = 2.1 atm

4 0
2 years ago
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