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2 years ago

A characteristic of acids is that they react with metals to: form non-metals release water release hydrogen gas produce bases

Biology

2 answers:

astra-53 [7]2 years ago

6 0

a characteristic of acids is that they react with metals to release hydrogen gas.

Dahasolnce [82]2 years ago

3 0

Answer:

When an acid reacts with a metal it results in the formation of salt and hydrogen gas is liberated. For example, the nitric acid reacts with the calcium it forms salts of calcium nitrate and hydrogen gas is liberated.

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What would you use to measure an amount of solid sodium chloride(NaCl) crystals to add to a 30 mL solution?

Sphinxa [80]

Answer:

Spectrophotometer that measures between 100 and 900 nanometers.

Explanation:

dont quote me on this

6 0

3 years ago

A team of scientists conducted a study of grassland ecosystem and estimated the total energy at each trophic level. Their data i

maria [59]

Answer:

In grassland ecosystem, first trophic level is the producer. Producers are the organisms which makes their own food, here the producer are grasses. The second trohic level contain herbivores which feed on these grasses. These herbivores are eaten by secondary consumers which belongs to third trophic level and secondary consumers are then eaten by tertiary consumer.

The population of producers are very high so it is placed at the base while tertiary consumer are placed on the top due to low population.

8 0

2 years ago

PLSSS HELP IF YOU TURLY KNOW THISS

VikaD [51]

Answer:

$\huge \text{\boxed{Hello, There! :)}}$

$\textbf{ \textit{The Correct Answer is Option A.}}}$

Explanation:

The anatomy of a child's brains can be divided into three parts:

- Cerebrum;

- Brainserm;

- Cerebellum.

The Cerebrum has the Cerebral cortex that is responsible for functions as coordination of movement, temperature, touch, vision, hearing, speech and language, judgment, reasoning, emotions and memory.

The Brainstem includes the medulla, midbrain, and the pons, being responsible for most of the involuntary movements.

The Cerebellum coordinate vonluntary muscle movements, and the balance of the body.

The part that stores the memory for a toddler as they are learning to walk is the cerebral cortex while the cerebellum coordinate and balance their movement to improve the walk with time.

Hope this Helps!
Have a wonderful day!

 $\boxed{InLoveWithNature}$ 

6 0

2 years ago

What is one feedback mechanism that happens as you increase exercise and muscle activity

jenyasd209 [6]

As you increase exercise and muscle activity, your heart rates increases. That is one feedback mechanism. Your heart delivers oxygen and nutrients to your muscle and other parts of the body quicker.

6 0

3 years ago

1. What are the independent and dependent variables in each of the experiments?

Dafna1 [17]

The independent variables are temperature, airflow, and light and the dependent variable in each of the experiments is evaporation.
The schematic representation in the diagram helps in the understanding of the setup for the experiments.
The level of temperature, the rate of airflow, and the intensity of light must be controlled in the experiments.
A person will not be confident in experiment 3 results as the temperature is the independent variable that alters the results of evaporation.

<h3>What are the four foremost factors of a managed test?</h3>

When possible, scientists take a look at their hypotheses through the use of managed experiments. A managed test is a systematic take look at executed below-managed conditions, which means that simply one (or a few) elements are modified at a time, even as all others are saved consistently. We'll appear carefully at managed experiments within side the subsequent section.

In the three experiments, the dependent variable is evaporation, as it changes with the change in another variable.

The independent variable in experiment 1 is temperature, experiment 2 is airflow, and experiment 3 is light.

The experiment can be understood better with the representation of the schematic that shows the setup to analyze how the experiment was performed. Therefore the diagram must add the schematic of the experiment.

The controlled items in the experiment are the variables that are set at the particular unit to form the result. the controlled item in experiment 1 is temperature, experiment 2 is airflow from the fan, and experiment 3 is the intensity of light.

The result of experiment 3 is based on the dependence on the intensity of light keeping temperature constant and controlled. If the temperature is not controlled in the experiment then it may lead to an alteration in the results as it depends on both light and temperature.

The flow chart for the increase in pressure affecting the evaporation is given in the image attached.