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kiruha [24]
2 years ago
9

1) The term which indicates that the element occurs in pairs is ____. Select the letter of the correct answer.

Chemistry
2 answers:
Reika [66]2 years ago
7 0
1. Diatomic
2. Products
3. Reactants
4. Coefficient
5. Subscript
6. True
7. False
8. First you must write the reactants. Ensure the valencies of the reactants are correct. Draw an arrow. Write the products. Ensure the valencies of the products are correct and apply subscripts as necessary. Balance the equation by ensuring both sides have equal amounts of each elements - use only coefficients to complete this NOT subscripts. 
Vaselesa [24]2 years ago
5 0
The answer is a 2 is b
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What is the significance of enzymes in maintaining homeostasis in living organisms ?
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 Enzymes are needed for metabolic pathways in the body, respiration, digestion and other important life processes. When enzymes function properly, homeostasis is maintained. However, if an enzyme is lacking or has an incorrect shape due to genetic mutation, this can lead to disease within an organism.
7 0
3 years ago
34.969amu)(0.7577) =<br> (36.966amu)(0.2423)
Natasha_Volkova [10]

Answer:

26.4960 is the answer for the first one

8.9569 is the answer for the second one

3 0
3 years ago
What is the mass in grams of BaCl2 that is needed to prepare 200 mL of a 0.500 M solution
DENIUS [597]

Answer:

= 20.82 g of BaCl2

Explanation:

Given,

Volume = 200 mL

Molarity = 0.500 M

Therefore;

Moles = molarity × volume

          = 0.2 L × 0.5 M

          = 0.1 mole

But; molar mass of BaCl2 is 208.236 g/mole

Therefore; 0.1 mole of BaCl2 will be equivalent to;

  = 208.236 g/mol x 0.1 mol

  = 20.82 g

Therefore, the mass of BaCl2 in grams required is 20.82 g

6 0
2 years ago
How much faster does sound travel in the ocean then in the rainforest
Natali [406]

Answer:

Sound travels over 4 times faster in the ocean than it does on land.

Explanation:

Speed of sound in water is approximately 1500 meters per second

and the speed of sound in air is approximately 340 meters per second.

Kono Dio Da!!!

7 0
3 years ago
How many grams of water are required to produce 5.50L of hydrogen gas at 25.0 degrees C and 755mmHg?
stiv31 [10]

Answer is: 4.02 grams of water are required.
Chemical reaction: BaH₂ + 2H₂O → Ba(OH)₂ + 2H₂.
Ideal gas law: p·V = n·R·T.
p = 755 mm Hg ÷ 760.0 mmHg / atm = 0.993 atm.
T = 25 + 273.15 = 298.15 K.
V(H₂) = 5.50 L.
R = 0,08206 L·atm/mol·K.
n(H₂) = 0.993 atm · 5.5 L ÷ 0,08206 L·atm/mol·K · 298.15 K.
n(H₂) = 0.223 mol.
From chemical reaction: n(H₂O) : n(H₂) = 1 : 1.
n(H₂O) = 0.223 mol.
m(H₂O) = 0.223 mol · 18 g/mol.
m(H₂O) = 4.02 g.
3 0
3 years ago
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