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olga nikolaevna [1]
3 years ago
13

Animal cells do not have

Chemistry
2 answers:
Dennis_Churaev [7]3 years ago
7 0

Answer:

chloroplasts and central vacuoles

Explanation:

slamgirl [31]3 years ago
7 0

Answer:

Animal Cells don't have cell walls.

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Which of the following are evidence that chemical change has occurred
dolphi86 [110]

Answer:

gas given off

Explanation:

that's the answer

3 0
3 years ago
If 15 grams of Carbon dioxide is produced in a chemical reaction, how many grams of Carbon must be consumed in the reaction if w
Nata [24]

4.1g

Explanation:

Given parameters:

Mass of carbon dioxide = 15g

Mass of oxygen gas = 11g

Unknown:

Mass of carbon consumed = ?

Solution:

   Equation of the reaction:

                                              C +  O₂   →   CO₂

    To solve this problem from the balanced equation,  we have to use the amount of product formed and work to Carbon. This is because, we are sure of the amount of carbon dioxide formed but the amount of the given oxygen gas used is not precise.

  Number of moles of CO₂ = \frac{mass}{molar mass}

Molar mass of CO₂ = 12 + (16 x2) = 44g/mol

   Number of moles of CO₂ = \frac{15}{44} = 0.34mole

From the equation of the reaction;

              1 mole of CO₂  is produced from 1 mole of C

           0.34mole of CO₂  will produce 0.34mole of C

Mass of carbon reacting = number of moles x molar mass = 0.34 x 12 = 4.1g

Learn more:

Number of moles brainly.com/question/1841136

#learnwithBrainly

4 0
3 years ago
Which chemical equation best represents the law of conversation of matter?
dem82 [27]
H+O>h2o I believe this is the answer
8 0
3 years ago
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PLEASE HELP ME!!!! Which energy graph represents the nonspontaneous transition of graphite into diamond?
Viefleur [7K]

Answer:

A picture .There is high reactions in progression still the energy reaction reduced to indicate complete reaction.

4 0
3 years ago
I need help with this question...<br>​
ivanzaharov [21]
I’m guessing the answer is AX (the first one) sorry if I am wrong tho
5 0
3 years ago
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